CN106904906B - A kind of composite mortar and preparation method thereof - Google Patents
A kind of composite mortar and preparation method thereof Download PDFInfo
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- CN106904906B CN106904906B CN201710071001.9A CN201710071001A CN106904906B CN 106904906 B CN106904906 B CN 106904906B CN 201710071001 A CN201710071001 A CN 201710071001A CN 106904906 B CN106904906 B CN 106904906B
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- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 85
- 239000002131 composite material Substances 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title abstract description 16
- 239000010881 fly ash Substances 0.000 claims abstract description 70
- 239000004576 sand Substances 0.000 claims abstract description 70
- 239000004568 cement Substances 0.000 claims abstract description 53
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 53
- 239000011707 mineral Substances 0.000 claims abstract description 53
- 239000000843 powder Substances 0.000 claims abstract description 35
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 31
- 229920001971 elastomer Polymers 0.000 claims abstract description 31
- 239000005060 rubber Substances 0.000 claims abstract description 31
- 238000003756 stirring Methods 0.000 claims abstract description 31
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 30
- 239000000654 additive Substances 0.000 claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 22
- 229920002522 Wood fibre Polymers 0.000 claims abstract description 20
- 230000000996 additive effect Effects 0.000 claims abstract description 20
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 92
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 74
- 238000002156 mixing Methods 0.000 claims description 45
- 239000000203 mixture Substances 0.000 claims description 41
- 239000005871 repellent Substances 0.000 claims description 29
- 230000002940 repellent Effects 0.000 claims description 29
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 26
- 239000003607 modifier Substances 0.000 claims description 19
- 239000002025 wood fiber Substances 0.000 claims description 19
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 18
- -1 polysiloxane Polymers 0.000 claims description 17
- 229920001577 copolymer Polymers 0.000 claims description 11
- 239000011398 Portland cement Substances 0.000 claims description 10
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 claims description 10
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 9
- 229920001479 Hydroxyethyl methyl cellulose Polymers 0.000 claims description 8
- 239000006004 Quartz sand Substances 0.000 claims description 8
- 229920005551 calcium lignosulfonate Polymers 0.000 claims description 8
- RYAGRZNBULDMBW-UHFFFAOYSA-L calcium;3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Ca+2].COC1=CC=CC(CC(CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O RYAGRZNBULDMBW-UHFFFAOYSA-L 0.000 claims description 8
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 229920001296 polysiloxane Polymers 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 8
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 8
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 8
- 229920003123 carboxymethyl cellulose sodium Polymers 0.000 claims description 7
- 229940063834 carboxymethylcellulose sodium Drugs 0.000 claims description 7
- 238000007873 sieving Methods 0.000 claims description 6
- 229920002907 Guar gum Polymers 0.000 claims description 5
- 239000005639 Lauric acid Substances 0.000 claims description 5
- 239000004113 Sepiolite Substances 0.000 claims description 5
- NVVZQXQBYZPMLJ-UHFFFAOYSA-N formaldehyde;naphthalene-1-sulfonic acid Chemical compound O=C.C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 NVVZQXQBYZPMLJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000665 guar gum Substances 0.000 claims description 5
- 235000010417 guar gum Nutrition 0.000 claims description 5
- 229960002154 guar gum Drugs 0.000 claims description 5
- 229910052624 sepiolite Inorganic materials 0.000 claims description 5
- 235000019355 sepiolite Nutrition 0.000 claims description 5
- 229920005552 sodium lignosulfonate Polymers 0.000 claims description 5
- ALVYUZIFSCKIFP-UHFFFAOYSA-N triethoxy(2-methylpropyl)silane Chemical compound CCO[Si](CC(C)C)(OCC)OCC ALVYUZIFSCKIFP-UHFFFAOYSA-N 0.000 claims description 5
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 5
- 229920002554 vinyl polymer Polymers 0.000 claims description 5
- 229920003063 hydroxymethyl cellulose Polymers 0.000 claims description 4
- 229940031574 hydroxymethyl cellulose Drugs 0.000 claims description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 13
- 230000009467 reduction Effects 0.000 abstract description 7
- 238000005336 cracking Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 239000000853 adhesive Substances 0.000 abstract description 4
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 238000009413 insulation Methods 0.000 abstract description 3
- 239000011324 bead Substances 0.000 abstract 2
- 239000011521 glass Substances 0.000 abstract 2
- 239000004035 construction material Substances 0.000 abstract 1
- 231100000252 nontoxic Toxicity 0.000 abstract 1
- 230000003000 nontoxic effect Effects 0.000 abstract 1
- 238000004321 preservation Methods 0.000 abstract 1
- 239000002994 raw material Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 7
- 239000002585 base Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 206010010214 Compression fracture Diseases 0.000 description 3
- 239000010883 coal ash Substances 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 231100000956 nontoxicity Toxicity 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 229920003086 cellulose ether Polymers 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 231100000481 chemical toxicant Toxicity 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000005447 environmental material Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 125000001165 hydrophobic group Chemical group 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention provides a kind of composite mortar and preparation method thereof; belong to construction material production field; the composite mortar is using cement, mineral sand, flyash and glass bead as aggregate, and sodium cellulose glycolate, wood fibre, rubber powder, water-retaining agent, water-reducing agent and hydrophober are additive；The production method is specifically includes the following steps: first; cement, additive, glass bead, flyash are sequentially placed into reaction kettle in a kettle and stir certain time in advance; obtained material is put into blender with mineral sand again and is stirred, both obtains composite mortar after cooling.The present invention provides a kind of composite mortars and preparation method thereof, this composite mortar has the advantages of safe and non-toxic, reduction energy consumption, and its workability is good, cracking resistance, heat-insulation and heat-preservation, waterproof, intensity are high, corrosion-resistant, cohesive force and adhesive force is strong, light weight, it is easy for construction, conducive to mechanized construction, has and save working hour, reduce the characteristics of building cost.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of building material production, in particular to composite mortar and a manufacturing method thereof.
[ technical background ] A method for producing a semiconductor device
The composite mortar is high-strength cement mortar doped with modified epoxy emulsion or other modified copolymer emulsion, also called polymer mortar, for example, the composite mortar suitable for load-bearing structures can improve the physical and mechanical properties of the composite mortar, and can also obviously improve the capability of anchoring steel bars and bonding concrete. Production of composite mortar the requirements of national building environment-friendly green construction production are met, and the composite mortar has the characteristics of safety, no toxicity, energy consumption reduction, dust reduction, convenient construction, contribution to mechanized construction, labor hour saving, building cost reduction and the like; at present, in large and medium-sized cities, manual mortar stirring on construction sites is forbidden, and prefabricated commercial concrete is bound to become a necessary trend in the building industry.
Fly ash is fine ash collected from flue gas generated after coal combustion, and is main solid waste discharged from coal-fired power plants. The main oxide composition of the fly ash of the thermal power plant in China is as follows: SiO 22、Al2O3、FeO、Fe2O3、CaO、TiO2And the like. Along with the development of the power industry, the discharge amount of fly ash of a coal-fired power plant is increased year by year, and reaches 3 hundred million tons in 2010, so that the fly ash becomes one of industrial waste residues with larger discharge capacity in China. A large amount of fly ash can generate dust without treatment, thereby polluting the atmosphere; if discharged into a water system, the river can be silted, and toxic chemicals in the river can cause harm to human bodies and organisms. The fly ash can be recycled, and the recycling aspect of the fly ash at present is as follows: the fly ash cement, fly ash bricks, fly ash silicate building blocks, fly ash aerated concrete and other building materials are produced, and the fly ash silicate building blocks can also be used as agricultural fertilizers and soil conditioners, and can be used as industrial raw materials and environmental materials. In the field of producing mortar using fly ash, there are also problems such as low early strength leading to unstable quality.
The modern composite mortar should reduce the use steps, reduce the construction raise dust on the one hand, still can avoid simultaneously in the practical application process, because the operator's error leads to the change of the nature of composite mortar and influences the result of use, leads to appearing easy cracking, the phenomenon of fragile.
[ summary of the invention ]
In view of the problems provided above, the invention provides composite mortar and a preparation method thereof, and the composite mortar has the advantages of safety, no toxicity, reduced energy consumption, good workability, crack resistance, heat insulation, water resistance, high strength, corrosion resistance, strong adhesive force and adhesion, light weight, convenient construction, contribution to mechanized construction, labor hour saving and construction cost reduction.
The technical scheme of the invention is as follows:
the composite mortar takes cement, mineral sand, fly ash and vitrified micro bubbles as aggregates, and takes sodium carboxymethylcellulose, wood fiber, rubber powder, a water-retaining agent, a water reducing agent and a water repellent as additives; the water-retaining agent is prepared by mixing methyl hydroxyethyl cellulose ether, guar gum ether and sepiolite according to the mass ratio of 1-2:0.6-0.8: 1;
the water reducing agent is prepared by mixing calcium lignosulfonate, sodium lignosulfonate and naphthalene sulfonic acid formaldehyde condensate according to the mass ratio of 1:1: 1-1.5;
the water repellent is prepared by mixing polysiloxane and isobutyl triethoxy silane according to the mass ratio of 1: 1.5-2;
the rubber powder is prepared by mixing styrene-butadiene copolymer, vinyl versatate-vinyl acetate copolymer and lauric acid ethylene-acetic acid copolymer according to the mass ratio of 1-1.2:0.7-0.9: 1;
the preparation method of the composite mortar specifically comprises the following steps:
(1) aggregate pretreatment: drying the mineral sand and the vitrified micro bubbles until the water content is less than or equal to 0.5 percent; putting the fly ash into a high-speed mixer, adding a modifier accounting for 0.15-0.2% of the mass of the fly ash, controlling the temperature at 100 ℃ and 130 ℃, stirring and mixing, and sieving by a sieve of 80-100 meshes to obtain the treated fly ash; wherein the modifier is prepared by mixing distearoyl isopropyl aluminate, acrylonitrile, styrene and silica micropowder according to the mass ratio of 2-3:0.5-0.8:1: 1-2;
(2) preparing mortar: firstly, premixing cement and the admixture in a reaction kettle for 5min according to the proportion of 278-;
then, adding the vitrified micro bubbles into the reaction kettle, and pre-stirring the vitrified micro bubbles and the mixture a for 5min to obtain a mixture b; wherein the dosage ratio of the vitrified micro bubbles to the cement is 8-10: 278-283;
secondly, adding the treated fly ash obtained in the step (1) into a reaction kettle, and pre-stirring the fly ash and the mixture b for 5min to obtain a mixture c; wherein the dosage ratio of the fly ash to the cement is 44-46: 278-;
finally, putting the mixture c and mineral sand into a stirrer, stirring for 5-8min under the condition of 34-36r/min, and cooling for 6-8h in a standby mode to obtain composite mortar; wherein the dosage ratio of the mineral sand to the cement is 659-662: 278-283;
further, the cement is ordinary portland cement with the reference number of 32.5R or ordinary portland cement with the reference number of 42.5R; the mineral sand is river sand, quartz sand and mechanical sand, and the mineral sand is sieved by a 20-60-mesh sieve, so that the mud content is kept to be less than or equal to 0.5 percent.
Further, the additive is prepared by mixing sodium hydroxymethyl cellulose, wood fiber, rubber powder, a water-retaining agent, a water reducing agent and a water repellent according to the mass ratio of 3:1.5:0.6:0.3:0.3: 0.3.
Further, in the step (1), the modifier is prepared by mixing distearoyl isopropyl aluminate, acrylonitrile, styrene and silica micropowder according to the mass ratio of 2.2:0.6:1: 1.5.
Further, in the step (2), the using amount ratio of the cement, the mineral sand, the fly ash and the vitrified micro bubbles is 280:660:45: 9.
Compared with the prior art, the invention has the following advantages:
1. the composite mortar of the invention uses cement, mineral sand, fly ash and vitrified micro bubbles as main raw materials; the fly ash can be recycled, and is added into the composite mortar in a specific proportion for use after being treated by a modifier, so that the use amount of cement is reduced, the workability of the mortar is improved, the compressive strength is enhanced, the mortar has the characteristics of cracking resistance and flame retardance, and the early strength is better; the mortar can be lightened and the heat conductivity coefficient can be reduced by adding the vitrified micro bubbles; the used mineral sand also comprises mechanical sand, so that the material cost is reduced, great contribution is made to environmental protection, and the purpose of energy conservation is realized.
2. The coal ash used by the composite mortar is obtained by adding a modifier with the mass of 0.15-0.2% of the coal ash into a high-speed mixer, controlling the temperature at 100 ℃ and 130 ℃, and stirring and mixing, wherein the modifier is prepared by mixing distearoyl isopropyl aluminate, acrylonitrile, styrene and silica micropowder according to a specific mass ratio; the outer surfaces of the treated fly ash particles are covered with hydrophobic groups, so that the fly ash particles do not react with most of acid and alkali, and have strong corrosion resistance and waterproof capability; and the used modifying agent ensures that the mortar has good wetting property and good adsorbability and is not easy to agglomerate.
3. The additive used for the composite mortar comprises sodium hydroxymethyl cellulose, wood fiber, rubber powder, a water-retaining agent, a water reducing agent and a water repellent; the quality of the mortar is greatly improved by adding the additive, the hydroxymethyl cellulose and the rubber powder can improve the strength of the mortar, the wood fiber can play a role in cracking resistance, and the water repellent, the water-retaining agent and the water reducing agent are added to improve the density of the mortar and the water resistance of the mortar. The adhesive powder improves the compressive strength and the flexural strength of the mortar in the dry powder mortar, improves the elongation of the mortar so as to improve the impact toughness of the mortar, simultaneously gives good stress dispersion effect to the mortar, and improves the bonding property of the mortar, and the bonding mechanism is realized by adsorption and diffusion of macromolecules on a bonding surface; meanwhile, the glue powder has certain permeability and fully infiltrates the surface of the base material together with the cellulose ether, so that the surface performance of the base and the new plastering is close, the adsorbability is improved, and the performance of the base is greatly improved. The elastic modulus of the mortar is reduced, the deformation capacity is improved, and the cracking phenomenon is reduced; the net film structure formed by the rubber powder can penetrate through holes and cracks in cement mortar, so that the bonding between the base material and a cement hydration product is improved, and the wear resistance and the corrosion resistance are improved.
In a word, the invention provides a composite mortar and a preparation method thereof, the obtained composite mortar is combined with the requirements of environment-friendly and green construction production of national buildings, has the advantages of safety, no toxicity and energy consumption reduction, and has the advantages of good workability, crack resistance, heat insulation, water resistance, high strength, corrosion resistance, strong cohesive force and adhesive force, light weight, convenient construction, contribution to mechanized construction, labor hour saving and building cost reduction, and the preparation method ensures that the composite mortar has less loss, reduces dust emission and is convenient and fast to construct.
[ detailed description ] embodiments
The following examples may assist those skilled in the art in a more complete understanding of the present invention, but are not intended to limit the invention in any way.
Example 1
The preparation method of the composite mortar comprises the following steps:
(1) selecting raw materials: selecting cement, mineral sand, fly ash and vitrified micro bubbles as aggregates, and selecting carboxymethylcellulose sodium, wood fiber, rubber powder, a water-retaining agent, a water reducing agent and a water repellent as additives; wherein,
the water-retaining agent is prepared by mixing methyl hydroxyethyl cellulose ether, guar gum ether and sepiolite according to the mass ratio of 1:0.6: 1;
the water reducing agent is prepared by mixing calcium lignosulfonate, sodium lignosulfonate and naphthalene sulfonic acid formaldehyde condensate according to the mass ratio of 1:1: 1;
the water repellent is prepared by mixing polysiloxane and isobutyl triethoxy silane according to the mass ratio of 1: 1.5;
the rubber powder is prepared by mixing styrene-butadiene copolymer, vinyl versatate-vinyl acetate copolymer and lauric acid ethylene-acetic acid copolymer according to the mass ratio of 1:0.7: 1;
the cement is ordinary Portland cement with the label of 32.5R;
the mineral sand is river sand, quartz sand and mechanical sand, and the mineral sand is sieved by a 20-60-mesh sieve, so that the mud content is kept to be less than or equal to 0.5 percent;
(2) preparing an additive: uniformly mixing sodium carboxymethylcellulose, wood fiber, rubber powder, a water-retaining agent, a water reducing agent and a water repellent according to the mass ratio of 2.8:1.4:0.5:0.2:0.25:0.3 to obtain an additive;
(3) aggregate pretreatment: drying the mineral sand and the vitrified micro bubbles in the step (1) until the water content is less than or equal to 0.5 percent; putting the fly ash obtained in the step (1) into a high-speed mixer, adding a modifier accounting for 0.15% of the mass of the fly ash, controlling the temperature at 100 ℃ and 130 ℃, stirring and mixing, and sieving with a sieve of 80-100 meshes to obtain the treated fly ash; wherein the modifier is prepared by mixing distearoyl isopropyl aluminate, acrylonitrile, styrene and silica micropowder according to the mass ratio of 2:0.5:1: 1;
(4) preparing mortar: firstly, premixing cement and the admixture in the step (2) for 5min in a reaction kettle according to the proportion of 278:5.5 to obtain a mixture a;
then, adding the vitrified micro bubbles into the reaction kettle, and pre-stirring the vitrified micro bubbles and the mixture a for 5min to obtain a mixture b; wherein the dosage ratio of the vitrified micro bubbles to the cement is 8: 278;
secondly, adding the treated fly ash obtained in the step (3) into a reaction kettle, and pre-stirring the fly ash and the mixture b for 5min to obtain a mixture c; wherein the dosage ratio of the fly ash to the cement is 44: 278;
finally, putting the mixture c and mineral sand into a stirrer, stirring for 5-8min under the condition of 34-36r/min, and cooling for 6-8h in a standby mode to obtain composite mortar; wherein the dosage ratio of the mineral sand to the cement is 659: 278.
Example 2
The preparation method of the composite mortar comprises the following steps:
(1) selecting raw materials: selecting cement, mineral sand, fly ash and vitrified micro bubbles as aggregates, and selecting carboxymethylcellulose sodium, wood fiber, rubber powder, a water-retaining agent, a water reducing agent and a water repellent as additives; wherein,
the water-retaining agent is prepared by mixing methyl hydroxyethyl cellulose ether, guar gum ether and sepiolite according to the mass ratio of 2:0.8: 1;
the water reducing agent is prepared by mixing calcium lignosulfonate, sodium lignosulfonate and naphthalene sulfonic acid formaldehyde condensate according to the mass ratio of 1:1: 1.5;
the water repellent is prepared by mixing polysiloxane and isobutyl triethoxy silane according to the mass ratio of 1: 2;
the rubber powder is prepared by mixing styrene-butadiene copolymer, vinyl versatate-vinyl acetate copolymer and lauric acid ethylene-acetic acid copolymer according to the mass ratio of 1.2:0.9: 1;
the cement is ordinary Portland cement with the label of 42.5R;
the mineral sand is river sand, quartz sand and mechanical sand, and the mineral sand is sieved by a 20-60-mesh sieve, so that the mud content is kept to be less than or equal to 0.5 percent;
(2) preparing an additive: uniformly mixing sodium carboxymethylcellulose, wood fiber, rubber powder, a water-retaining agent, a water reducing agent and a water repellent according to the mass ratio of 3.1:1.6:0.7:0.4:0.35:0.3 to obtain an additive;
(3) aggregate pretreatment: drying the mineral sand and the vitrified micro bubbles in the step (1) until the water content is less than or equal to 0.5 percent; putting the fly ash obtained in the step (1) into a high-speed mixer, adding a modifier accounting for 0.2% of the mass of the fly ash, controlling the temperature at 100 ℃ and 130 ℃, stirring and mixing, and sieving with a sieve of 80-100 meshes to obtain the treated fly ash; wherein the modifier is prepared by mixing distearoyl-oxy-isopropyl aluminate, acrylonitrile, styrene and silicon micropowder according to the mass ratio of 3:0.8:1: 2;
(4) preparing mortar: firstly, premixing cement and the admixture in the step (2) for 5min in a reaction kettle according to the proportion of 283:6.2 to obtain a mixture a;
then, adding the vitrified micro bubbles into the reaction kettle, and pre-stirring the vitrified micro bubbles and the mixture a for 5min to obtain a mixture b; wherein the dosage ratio of the vitrified micro bubbles to the cement is 10: 283;
secondly, adding the treated fly ash obtained in the step (3) into a reaction kettle, and pre-stirring the fly ash and the mixture b for 5min to obtain a mixture c; wherein the dosage ratio of the fly ash to the cement is 46: 283;
finally, putting the mixture c and mineral sand into a stirrer, stirring for 5-8min under the condition of 34-36r/min, and cooling for 6-8h in a standby mode to obtain composite mortar; wherein the dosage ratio of the mineral sand to the cement is 662: 283.
Example 3
The preparation method of the composite mortar comprises the following steps:
(1) selecting raw materials: selecting cement, mineral sand, fly ash and vitrified micro bubbles as aggregates, and selecting carboxymethylcellulose sodium, wood fiber, rubber powder, a water-retaining agent, a water reducing agent and a water repellent as additives; wherein,
the water-retaining agent is prepared by mixing methyl hydroxyethyl cellulose ether, guar gum ether and sepiolite according to the mass ratio of 1.5:0.7: 1;
the water reducing agent is prepared by mixing calcium lignosulfonate, sodium lignosulfonate and naphthalene sulfonic acid formaldehyde condensate according to the mass ratio of 1:1: 1.2;
the water repellent is prepared by mixing polysiloxane and isobutyl triethoxy silane according to the mass ratio of 1: 1.6;
the rubber powder is prepared by mixing styrene-butadiene copolymer, vinyl versatate-vinyl acetate copolymer and lauric acid ethylene-acetic acid copolymer according to the mass ratio of 1.1:0.8: 1;
the cement is ordinary Portland cement with the label of 32.5R;
the mineral sand is river sand, quartz sand and mechanical sand, and the mineral sand is sieved by a 20-60-mesh sieve, so that the mud content is kept to be less than or equal to 0.5 percent;
(2) preparing an additive: uniformly mixing sodium carboxymethylcellulose, wood fiber, rubber powder, a water-retaining agent, a water reducing agent and a water repellent according to the mass ratio of 3:1.5:0.6:0.3:0.3 to obtain an additive;
(3) aggregate pretreatment: drying the mineral sand and the vitrified micro bubbles in the step (1) until the water content is less than or equal to 0.5 percent; putting the fly ash obtained in the step (1) into a high-speed mixer, adding a modifier accounting for 0.18% of the mass of the fly ash, controlling the temperature at 100 ℃ and 130 ℃, stirring and mixing, and sieving with a sieve of 80-100 meshes to obtain the treated fly ash; wherein the modifier is prepared by mixing distearoyl isopropyl aluminate, acrylonitrile, styrene and silica micropowder according to the mass ratio of 2.2:0.6:1: 1.5;
(4) preparing mortar: firstly, premixing cement and the admixture in the step (2) for 5min in a reaction kettle according to the ratio of 280:6 to obtain a mixture a;
then, adding the vitrified micro bubbles into the reaction kettle, and pre-stirring the vitrified micro bubbles and the mixture a for 5min to obtain a mixture b; wherein the dosage ratio of the vitrified micro bubbles to the cement is 9: 280;
secondly, adding the treated fly ash obtained in the step (3) into a reaction kettle, and pre-stirring the fly ash and the mixture b for 5min to obtain a mixture c; wherein the dosage ratio of the fly ash to the cement is 45: 280;
finally, putting the mixture c and mineral sand into a stirrer, stirring for 5-8min under the condition of 34-36r/min, and cooling for 6-8h in a standby mode to obtain composite mortar; wherein the dosage ratio of the mineral sand to the cement is 660: 280.
Comparative example 1
The preparation method of the composite mortar comprises the following steps:
(1) selecting raw materials: selecting cement, mineral sand, fly ash and vitrified micro bubbles as aggregates, and selecting carboxymethylcellulose sodium, wood fiber, rubber powder, a water-retaining agent, a water reducing agent and a water repellent as additives; wherein,
the water retaining agent is methyl hydroxyethyl cellulose ether;
the water reducing agent is calcium lignosulfonate;
the water repellent is polysiloxane;
the rubber powder is a styrene-butadiene copolymer;
the cement is ordinary Portland cement with the label of 32.5R;
the mineral sand is river sand, quartz sand and mechanical sand, and the mineral sand is sieved by a 20-60-mesh sieve, so that the mud content is kept to be less than or equal to 0.5 percent;
(2) preparing an additive: uniformly mixing sodium carboxymethylcellulose, wood fiber, rubber powder, a water-retaining agent, a water reducing agent and a water repellent according to the mass ratio of 3:1.5:0.6:0.3:0.3 to obtain an additive;
(3) aggregate pretreatment: drying the mineral sand and the vitrified micro bubbles in the step (1) until the water content is less than or equal to 0.5 percent; putting the fly ash obtained in the step (1) into a high-speed mixer, adding a modifier accounting for 0.18% of the mass of the fly ash, controlling the temperature at 100 ℃ and 130 ℃, stirring and mixing, and sieving with a sieve of 80-100 meshes to obtain the treated fly ash; wherein the modifier is prepared by mixing distearoyl isopropyl aluminate, acrylonitrile, styrene and silica micropowder according to the mass ratio of 2.2:0.6:1: 1.5;
(4) preparing mortar: firstly, premixing cement and the admixture in the step (2) for 5min in a reaction kettle according to the ratio of 280:6 to obtain a mixture a;
then, adding the vitrified micro bubbles into the reaction kettle, and pre-stirring the vitrified micro bubbles and the mixture a for 5min to obtain a mixture b; wherein the dosage ratio of the vitrified micro bubbles to the cement is 9: 280;
secondly, adding the treated fly ash obtained in the step (3) into a reaction kettle, and pre-stirring the fly ash and the mixture b for 5min to obtain a mixture c; wherein the dosage ratio of the fly ash to the cement is 45: 280;
finally, putting the mixture c and mineral sand into a stirrer, stirring for 5-8min under the condition of 34-36r/min, and cooling for 6-8h in a standby mode to obtain composite mortar; wherein the dosage ratio of the mineral sand to the cement is 660: 280.
Comparative example 2
The preparation method of the composite mortar comprises the following steps:
(1) selecting raw materials: selecting cement, mineral sand, fly ash and vitrified micro bubbles as aggregates, and selecting carboxymethylcellulose sodium, wood fiber, rubber powder, a water-retaining agent, a water reducing agent and a water repellent as additives; wherein,
the water retaining agent is methyl hydroxyethyl cellulose ether;
the water reducing agent is calcium lignosulfonate;
the water repellent is polysiloxane;
the rubber powder is a styrene-butadiene copolymer;
the cement is ordinary Portland cement with the label of 32.5R;
the mineral sand is river sand, quartz sand and mechanical sand, and the mineral sand is sieved by a 20-60-mesh sieve, so that the mud content is kept to be less than or equal to 0.5 percent;
(2) preparing an additive: uniformly mixing sodium carboxymethylcellulose, wood fiber, rubber powder, a water-retaining agent, a water reducing agent and a water repellent according to the mass ratio of 3:1.5:0.6:0.3:0.3 to obtain an additive;
(3) aggregate pretreatment: drying the mineral sand and the vitrified micro bubbles in the step (1) until the water content is less than or equal to 0.5 percent;
(4) preparing mortar: firstly, premixing cement and the admixture in the step (2) for 5min in a reaction kettle according to the ratio of 280:6 to obtain a mixture a;
then, adding the vitrified micro bubbles into the reaction kettle, and pre-stirring the vitrified micro bubbles and the mixture a for 5min to obtain a mixture b; wherein the dosage ratio of the vitrified micro bubbles to the cement is 9: 280;
secondly, adding the fly ash into a reaction kettle, and pre-stirring the fly ash and the mixture b for 5min to obtain a mixture c; wherein the dosage ratio of the fly ash to the cement is 45: 280;
finally, putting the mixture c and mineral sand into a stirrer, stirring for 5-8min under the condition of 34-36r/min, and cooling for 6-8h in a standby mode to obtain composite mortar; wherein the dosage ratio of the mineral sand to the cement is 660: 280.
Comparative example 3
The preparation method of the composite mortar comprises the following steps:
(1) selecting raw materials: selecting cement, mineral sand, fly ash and vitrified micro bubbles as aggregates, and selecting carboxymethylcellulose sodium, wood fiber, rubber powder, a water-retaining agent, a water reducing agent and a water repellent as additives; wherein,
the water retaining agent is methyl hydroxyethyl cellulose ether;
the water reducing agent is calcium lignosulfonate;
the water repellent is polysiloxane;
the rubber powder is a styrene-butadiene copolymer;
the cement is ordinary Portland cement with the label of 32.5R;
the mineral sand is river sand, quartz sand and mechanical sand, and the mineral sand is sieved by a 20-60-mesh sieve, so that the mud content is kept to be less than or equal to 0.5 percent;
(2) preparing an additive: uniformly mixing sodium carboxymethylcellulose, wood fiber, rubber powder, a water-retaining agent, a water reducing agent and a water repellent according to the mass ratio of 3:1.5:0.6:0.3:0.3 to obtain an additive;
(3) aggregate pretreatment: drying the mineral sand and the vitrified micro bubbles in the step (1) until the water content is less than or equal to 0.5 percent;
(4) preparing mortar: firstly, placing cement, the additive in the step (2), the vitrified micro bubbles, the fly ash and the mineral sand into a stirrer according to the proportion of 280:6:9:45:660, stirring for 5-8min under the condition of 34-36r/min, and then cooling for 6-8h in a standby mode to obtain the composite mortar.
Experimental cases:
after a large number of experimental operations and tests, the composite mortar prepared in the examples 2 and 3 and the comparative examples 1 to 3 in the method of the invention is subjected to a series of experiments, various parameters are tested, and experimental data are recorded, wherein the parameters are shown in table 1.
TABLE 1 composite mortar parameters
As can be seen from the above Table 1, the composite mortars obtained by the methods of examples 2 and 3 of the present invention have a low thermal conductivity, a high tensile and compressive strength, and a low compression ratio as compared with the comparative examples 1 to 3.
Compared with the embodiment 3, the rubber powder, the water retention agent, the water reducing agent and the water repellent are all single-component substances, and other manufacturing modes are the same; the compression-fracture ratio of the obtained mortar is increased, the thermal conductivity and the water permeability are increased, and the tensile strength and the compressive strength are reduced, which shows that the properties of the composite mortar are deteriorated by using the rubber powder, the water-retaining agent, the water reducing agent and the water repellent which are single components.
Compared with the comparative example 1, the fly ash is not treated by the modifier, and the other modes are the same; the initial setting time of the obtained mortar is prolonged, the compression-fracture ratio is increased, the thermal conductivity and the water permeability are increased, and the tensile strength and the compressive strength are reduced, which shows that the coal ash used by the invention enhances the waterproof performance of the composite mortar under the action of the modifier, also enhances the compressive strength of the composite mortar, enables the composite mortar to have the characteristics of cracking resistance and flame retardance, and can reduce the initial setting time and enhance the characteristics of the mortar.
Compared with the comparative example 2, the preparation steps of the composite mortar are different, and other modes are the same; the result is that the initial setting time of the mortar is prolonged, the compression-fracture ratio is increased, and the thermal conductivity is increased, which shows that the preparation process of the invention can lead each raw material component to be better fused, thereby achieving the purpose of enhancing the characteristics of the obtained composite mortar.
Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (5)
1. The composite mortar is characterized in that cement, mineral sand, fly ash and vitrified micro bubbles are used as aggregates, and sodium hydroxymethyl cellulose, wood fiber, rubber powder, a water-retaining agent, a water reducing agent and a water repellent are used as additives; the water-retaining agent is prepared by mixing methyl hydroxyethyl cellulose ether, guar gum ether and sepiolite according to the mass ratio of 1-2:0.6-0.8: 1;
the water reducing agent is prepared by mixing calcium lignosulfonate, sodium lignosulfonate and naphthalene sulfonic acid formaldehyde condensate according to the mass ratio of 1:1: 1-1.5;
the water repellent is prepared by mixing polysiloxane and isobutyl triethoxy silane according to the mass ratio of 1: 1.5-2;
the rubber powder is prepared by mixing styrene-butadiene copolymer, vinyl versatate-vinyl acetate copolymer and lauric acid ethylene-acetic acid copolymer according to the mass ratio of 1-1.2:0.7-0.9: 1;
the additive is prepared by uniformly mixing sodium carboxymethylcellulose, wood fiber, rubber powder, a water-retaining agent, a water reducing agent and a water repellent according to the mass ratio of 2.8-3.1:1.4-1.6:0.5-0.7:0.2-0.4:0.25-0.35: 0.3;
the manufacturing method of the composite mortar comprises the following steps:
(1) aggregate pretreatment: drying the mineral sand and the vitrified micro bubbles until the water content is less than or equal to 0.5 percent; putting the fly ash into a high-speed mixer, adding a modifier accounting for 0.15-0.2% of the mass of the fly ash, controlling the temperature at 100 ℃ and 130 ℃, stirring and mixing, and sieving by a sieve of 80-100 meshes to obtain the treated fly ash; wherein the modifier is prepared by mixing distearoyl isopropyl aluminate, acrylonitrile, styrene and silica micropowder according to the mass ratio of 2-3:0.5-0.8:1: 1-2;
(2) preparing mortar: firstly, premixing cement and the admixture in a reaction kettle for 5min according to the proportion of 278-;
then, adding the vitrified micro bubbles into the reaction kettle, and pre-stirring the vitrified micro bubbles and the mixture a for 5min to obtain a mixture b; wherein the dosage ratio of the vitrified micro bubbles to the cement is 8-10: 278-283;
secondly, adding the treated fly ash obtained in the step (1) into a reaction kettle, and pre-stirring the fly ash and the mixture b for 5min to obtain a mixture c; wherein the dosage ratio of the fly ash to the cement is 44-46: 278-;
finally, putting the mixture c and mineral sand into a stirrer, stirring for 5-8min under the condition of 34-36r/min, and cooling for 6-8h in a standby mode to obtain composite mortar; wherein the dosage ratio of the mineral sand to the cement is 659-662: 278-283.
2. Composite mortar according to claim 1, characterised in that said cement is Portland cement with the designation 32.5R or Portland cement with the designation 42.5R; the mineral sand is river sand, quartz sand and mechanical sand, and the mineral sand is sieved by a 20-60-mesh sieve, so that the mud content is kept to be less than or equal to 0.5 percent.
3. The composite mortar of claim 1, wherein the additive is prepared by mixing carboxymethylcellulose sodium, wood fiber, rubber powder, a water-retaining agent, a water-reducing agent and a water repellent according to a mass ratio of 3:1.5:0.6:0.3:0.3: 0.3.
4. The composite mortar of claim 1, wherein in the step (1), the modifier is prepared by mixing distearoyl isopropyl aluminate, acrylonitrile, styrene and silica powder according to a mass ratio of 2.2:0.6:1: 1.5.
5. The composite mortar of claim 1, wherein in the step (2), the cement, the mineral sand, the fly ash and the vitrified micro bubbles are used in a ratio of 280:660:45: 9.
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