CN118324463B - Cement-based grouting material for semi-flexible pavement - Google Patents
Cement-based grouting material for semi-flexible pavement Download PDFInfo
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- CN118324463B CN118324463B CN202410465486.XA CN202410465486A CN118324463B CN 118324463 B CN118324463 B CN 118324463B CN 202410465486 A CN202410465486 A CN 202410465486A CN 118324463 B CN118324463 B CN 118324463B
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- 239000004568 cement Substances 0.000 title claims abstract description 47
- 239000000463 material Substances 0.000 title claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910052901 montmorillonite Inorganic materials 0.000 claims abstract description 31
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 28
- 229920005646 polycarboxylate Polymers 0.000 claims abstract description 21
- 229920003086 cellulose ether Polymers 0.000 claims abstract description 16
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 15
- 239000011707 mineral Substances 0.000 claims abstract description 15
- 239000006004 Quartz sand Substances 0.000 claims abstract description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910021538 borax Inorganic materials 0.000 claims abstract description 12
- 239000004328 sodium tetraborate Substances 0.000 claims abstract description 12
- 235000010339 sodium tetraborate Nutrition 0.000 claims abstract description 12
- 125000001931 aliphatic group Chemical group 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 11
- 239000010881 fly ash Substances 0.000 claims abstract description 10
- 229910021487 silica fume Inorganic materials 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims description 11
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 8
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 8
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 6
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 6
- 239000000178 monomer Substances 0.000 claims description 6
- 229920000570 polyether Polymers 0.000 claims description 6
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 6
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 6
- 239000008030 superplasticizer Substances 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- JGFZNNIVVJXRND-UHFFFAOYSA-N N,N-Diisopropylethylamine (DIPEA) Chemical compound CCN(C(C)C)C(C)C JGFZNNIVVJXRND-UHFFFAOYSA-N 0.000 claims description 4
- 239000012986 chain transfer agent Substances 0.000 claims description 4
- CWERGRDVMFNCDR-UHFFFAOYSA-N thioglycolic acid Chemical compound OC(=O)CS CWERGRDVMFNCDR-UHFFFAOYSA-N 0.000 claims description 4
- DKIDEFUBRARXTE-UHFFFAOYSA-N 3-mercaptopropanoic acid Chemical compound OC(=O)CCS DKIDEFUBRARXTE-UHFFFAOYSA-N 0.000 claims description 3
- 235000010323 ascorbic acid Nutrition 0.000 claims description 3
- 229960005070 ascorbic acid Drugs 0.000 claims description 3
- 239000011668 ascorbic acid Substances 0.000 claims description 3
- -1 isopentenyl Chemical group 0.000 claims description 3
- WOSBSWKAYVDFBJ-USGGBSEESA-M sodium;(z)-4-dodecoxy-4-oxobut-2-enoate Chemical compound [Na+].CCCCCCCCCCCCOC(=O)\C=C/C([O-])=O WOSBSWKAYVDFBJ-USGGBSEESA-M 0.000 claims description 3
- AEUVIXACNOXTBX-UHFFFAOYSA-N 1-sulfanylpropan-1-ol Chemical compound CCC(O)S AEUVIXACNOXTBX-UHFFFAOYSA-N 0.000 claims description 2
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 claims description 2
- SLINHMUFWFWBMU-UHFFFAOYSA-N Triisopropanolamine Chemical compound CC(O)CN(CC(C)O)CC(C)O SLINHMUFWFWBMU-UHFFFAOYSA-N 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethyl mercaptane Natural products CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 claims description 2
- CRVGTESFCCXCTH-UHFFFAOYSA-N methyl diethanolamine Chemical compound OCCN(C)CCO CRVGTESFCCXCTH-UHFFFAOYSA-N 0.000 claims description 2
- DGVVWUTYPXICAM-UHFFFAOYSA-N β‐Mercaptoethanol Chemical compound OCCS DGVVWUTYPXICAM-UHFFFAOYSA-N 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 11
- 238000003756 stirring Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 8
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 8
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 8
- 238000012545 processing Methods 0.000 description 4
- ZUGPQGAOAJZYPU-HLBFIJABSA-L disodium;(z)-2-dodecylbut-2-enedioate Chemical compound [Na+].[Na+].CCCCCCCCCCCC\C(C([O-])=O)=C\C([O-])=O ZUGPQGAOAJZYPU-HLBFIJABSA-L 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 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 description 2
- 239000010426 asphalt Substances 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 229920002884 Laureth 4 Polymers 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 229910002808 Si–O–Si Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- MSJMDZAOKORVFC-UAIGNFCESA-L disodium maleate Chemical compound [Na+].[Na+].[O-]C(=O)\C=C/C([O-])=O MSJMDZAOKORVFC-UAIGNFCESA-L 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 239000011800 void material Substances 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
-
- 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/08—Acids or salts thereof
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/28—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/32—Polyethers, e.g. alkylphenol polyglycolether
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/38—Polysaccharides or derivatives thereof
- C04B24/383—Cellulose or derivatives thereof
-
- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
- C08F283/065—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals on to unsaturated polyethers, polyoxymethylenes or polyacetals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F292/00—Macromolecular compounds obtained by polymerising monomers on to inorganic 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Road Paving Structures (AREA)
Abstract
The present invention relates to the field of engineering materials, specifically a cement-based grouting material for semi flexible pavement, comprising the following components by weight: 70-80 parts of cement, 1-5 parts of mineral powder, 5-10 parts of fly ash, 5-10 parts of silica fume, 20-30 parts of quartz sand, 0.1-0.5 parts of montmorillonite based polycarboxylate water reducer, 0.1-0.5 parts of aliphatic water reducer, 0.02-0.025 parts of borax, 0.03-0.06 parts of cellulose ether, 0.01-0.05 parts of early strength agent, and 30-40 parts of water. The cement-based grouting material prepared by the present invention has good flowability, and when applied to semi flexible pavement, its grouting rate is also better, thereby ensuring that the grouting material has good flowability. The construction effect and durability performance of the pavement, as well as the excellent mechanical properties after curing, can meet the technical requirements for the strength of semi flexible pavement.
Description
Technical Field
The invention relates to the field of engineering materials, in particular to a cement-based grouting material for a semi-flexible pavement.
Background
In recent years, with the continuous development of highway engineering technology, a semi-flexible pavement is popularized and applied as a novel pavement material in heavy-load road sections such as municipal intersections, bus stops, airport ports and the like. The semi-flexible pavement is a novel pavement material which is obtained by filling cement-based grouting material meeting the requirements of large flow state, super early strength and low shrinkage into a highly open porous asphalt mixture framework (the void ratio is 25% -30%). The technology can effectively solve the defects of poor ageing resistance, poor temperature stability, poor flexibility, easiness in cracking and the like of the traditional asphalt flexible highway pavement, so that the effects of avoiding pavement damage and prolonging the service life of the pavement are achieved, but the current cement-based grouting material is difficult to consider the fluidity and strength characteristics, so that the application of the semi-flexible pavement is limited.
Disclosure of Invention
The invention aims to: aiming at the technical problems, the invention provides a cement-based grouting material for a semi-flexible pavement.
The technical scheme adopted is as follows:
The cement-based grouting material for the semi-flexible pavement comprises the following components in parts by weight:
70-80 parts of cement, 1-5 parts of mineral powder, 5-10 parts of fly ash, 5-10 parts of silica fume, 20-30 parts of quartz sand, 0.1-0.5 part of montmorillonite-based polycarboxylate water reducer, 0.1-0.5 part of aliphatic water reducer, 0.02-0.025 part of borax, 0.03-0.06 part of cellulose ether, 0.01-0.05 part of early strength agent and 30-40 parts of water.
Further, the preparation method of the montmorillonite-based polycarboxylate superplasticizer comprises the following steps:
Respectively preparing an A component containing acrylic acid and sodium laurylmaleate sulfonate, a B component containing chain transfer agent and ascorbic acid, and a C component containing hydrogen peroxide, unsaturated polyether monomer and silane coupling agent, adding the A component and the B component into the C component, uniformly mixing, adding nano montmorillonite suspension, and reacting for 1-5 h.
Further, the weight ratio of the acrylic acid to the sodium lauromacrogol maleate sulfonate to the unsaturated polyether monomer to the silane coupling agent is 1:0.5-1:5-10:0.1-0.5.
Further, the unsaturated polyether monomer is any one or a combination of a plurality of methyl allyl polyoxyethylene ether, isopentenyl polyoxyethylene ether and allyl polyoxyethylene ether.
Further, the silane coupling agent is any one or more of A151, A171, A172 and KH-570.
Further, the chain transfer agent is any one or more of mercaptoethanol, mercaptopropanol, mercaptoacetic acid and mercaptopropionic acid.
Further, the component C is heated to 40-50 ℃ and then the component A, the component B and the nano montmorillonite suspension are added, and the component A and the component B are added before.
Further, the reaction temperature is 60-65 ℃.
Further, the particle size of the quartz sand is 50-100 mu m.
Further, the early strength agent is any one or a combination of more of triethanolamine, triisopropanolamine, methyldiethanolamine and diisopropylethylamine.
The invention has the beneficial effects that:
The invention provides a cement-based grouting material for semi-flexible pavement, the nano-scale mixing effect of montmorillonite ensures that cement colloid in the grouting material is more compact, a more rigid cement matrix can be formed, thereby improving the strength of the grouting material after solidification, but after the montmorillonite absorbs water, the volume of the montmorillonite expands, the viscosity of the concrete increases, the fluidity of the concrete becomes low, the silicon hydroxyl generated by hydrolysis of alkoxy in a silane coupling agent and the hydroxyl on the surface of the montmorillonite are subjected to dehydration condensation reaction, so as to form a montmorillonite-based polycarboxylate water reducer coated by Si-O-Si bonding branches, the graft coating of the polymer counteracts the reduction effect of montmorillonite on the fluidity of the cement-based grouting material, and the polymer forms a stable solvated water film on the surface of montmorillonite particles, thereby playing a role in three-dimensional protection, preventing the direct contact between the cement particles and the montmorillonite particles, playing a role in lubrication among the particles, and introducing alkyl long chains, ester groups and sulfonic groups into the structure of the water reducer by taking sodium lauryl maleate sulfonate as a comonomer, so that the adsorption efficiency of the water reducer on the surface of the cement particles can be improved, the steric hindrance effect can be provided, and the purposes of reducing water and improving fluidity can be achieved;
The cellulose ether is used as a high polymer material, the molecular chain of the cellulose ether contains a large number of hydroxyl groups and methyl groups, and can form hydrogen bonds with water molecules, so that the water retention and plasticity of the cement-based grouting material are improved, when the cellulose ether is dissolved in water, a layer of film can be formed on the surfaces of cement particles and the surfaces of aggregate particles, so that the water loss and the adhesion of the particles are prevented, the fluidity of the cement-based grouting material is improved, the hydration and the condensation speed of the cement-based grouting material can be delayed by borax, the raw materials can be uniformly mixed in a sufficient time interval, the later pouring is also convenient, and in addition, tetrahydroxy borate ions are formed in the water, and can be dehydrated and combined with the hydroxyl groups in the cellulose ether to form a crosslinked compound with a network structure, so that the cohesive force of the cellulose ether is increased, and the strength of the grouting material after being solidified is improved;
The cement-based grouting material prepared by the invention has good flowing property, and the better the filling rate is when the cement-based grouting material is applied to a semi-flexible pavement, so that the grouting material is ensured to have good construction effect and pavement durability, and the mechanical property after solidification is excellent, thereby meeting the technical requirement of the semi-flexible pavement on strength.
Detailed Description
The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention. The technology not mentioned in the present invention refers to the prior art, and unless otherwise indicated, the following examples and comparative examples are parallel tests, employing the same processing steps and parameters.
And (3) cement: PO42.5 Portland cement, conch;
mineral powder: s95 grade mineral powder, lingshou county Dongfeng mineral processing plants;
fly ash: first-level Lingshou Dongfeng mineral processing plants in county;
silica fume: lingshu county Rong district mineral products Limited;
quartz sand: particle size of 50-100 μm, lingshou county Yongshun mineral processing plant;
montmorillonite-based polycarboxylate water reducer: self-making;
aliphatic water reducer: TS-TQ, hold building materials together;
Borax: the chemical industry Co., ltd;
Cellulose ether HPMC: wuhan Runxing source technologies Co., ltd;
triethanolamine: wuhan Runxing source technologies Co., ltd;
water: tap water.
Example 1:
The cement-based grouting material for the semi-flexible pavement comprises the following components in parts by weight:
70-80 parts of cement, 1-5 parts of mineral powder, 5-10 parts of fly ash, 5-10 parts of silica fume, 20-30 parts of quartz sand, 0.1-0.5 part of montmorillonite-based polycarboxylate water reducer, 0.1-0.5 part of aliphatic water reducer, 0.02-0.025 part of borax, 0.03-0.06 part of cellulose ether HPMC, 0.01-0.05 part of triethanolamine and 30-40 parts of water.
The preparation method of the montmorillonite-based polycarboxylate superplasticizer comprises the following steps:
According to the method in reference 'synthesis and performance study of sodium maleate sulfonate', sodium laurylmaleate sulfonate is prepared by self-preparing 10g of acrylic acid and 5g of sodium laurylmaleate sulfonate into 10ml of water and uniformly mixing to obtain a component A, 0.35g of mercaptopropionic acid and 0.15g of ascorbic acid are added into 19.5ml of water and uniformly mixing to obtain a component B, 1g of 30% hydrogen peroxide, 90g of HPEG2400 and 2g of silane coupling agent KH-570 are added into water and uniformly mixing to obtain a component C, the component C is placed into a water bath kettle at 40 ℃, the component A and the component B are slowly dripped into the component C under stirring, the dripping time of the component A is 3h, the dripping time of the component B is 3.5h, the component B is stirred for 30min after the dripping time is finished, the suspension of nano montmorillonite is dripped into the suspension, the water bath temperature is adjusted to be 60 ℃ after the dripping time is 2h, and the water bath is kept at the temperature for 5 h.
The preparation method of the cement-based grouting material comprises the following steps:
Adding cement, mineral powder, fly ash, silica fume, quartz sand and borax into a stirring pot with the rotating speed of 30r/min, stirring for 5min, uniformly mixing montmorillonite-based polycarboxylate water reducer, aliphatic water reducer, cellulose ether HPMC, triethanolamine and water, adding, and stirring for 5min at the rotating speed of 200 r/min.
Example 2:
The cement-based grouting material for the semi-flexible pavement comprises the following components in parts by weight:
70-80 parts of cement, 1-5 parts of mineral powder, 5-10 parts of fly ash, 5-10 parts of silica fume, 20-30 parts of quartz sand, 0.1-0.5 part of montmorillonite-based polycarboxylate water reducer, 0.1-0.5 part of aliphatic water reducer, 0.02-0.025 part of borax, 0.03-0.06 part of cellulose ether HPMC, 0.01-0.05 part of triethanolamine and 30-40 parts of water.
The preparation method of the montmorillonite-based polycarboxylate superplasticizer is the same as that of example 1;
The preparation method of the cement-based grouting material comprises the following steps:
Adding cement, mineral powder, fly ash, silica fume, quartz sand and borax into a stirring pot with the rotating speed of 30r/min, stirring for 5min, uniformly mixing montmorillonite-based polycarboxylate water reducer, aliphatic water reducer, cellulose ether HPMC, triethanolamine and water, adding, and stirring for 5min at the rotating speed of 200 r/min.
Example 3:
The cement-based grouting material for the semi-flexible pavement comprises the following components in parts by weight:
70-80 parts of cement, 1-5 parts of mineral powder, 5-10 parts of fly ash, 5-10 parts of silica fume, 20-30 parts of quartz sand, 0.1-0.5 part of montmorillonite-based polycarboxylate water reducer, 0.1-0.5 part of aliphatic water reducer, 0.02-0.025 part of borax, 0.03-0.06 part of cellulose ether HPMC, 0.01-0.05 part of triethanolamine and 30-40 parts of water.
The preparation method of the montmorillonite-based polycarboxylate superplasticizer is the same as that of example 1;
The preparation method of the cement-based grouting material comprises the following steps:
Adding cement, mineral powder, fly ash, silica fume, quartz sand and borax into a stirring pot with the rotating speed of 30r/min, stirring for 5min, uniformly mixing montmorillonite-based polycarboxylate water reducer, aliphatic water reducer, cellulose ether HPMC, triethanolamine and water, adding, and stirring for 5min at the rotating speed of 200 r/min.
Comparative example 1:
substantially the same as in example 1, except that borax was not added.
Comparative example 2:
Substantially the same as in example 1, except that the cellulose ether HPMC was not added.
Comparative example 3:
substantially the same as in example 1, except that the montmorillonite-based polycarboxylate superplasticizer was not added.
Comparative example 4:
substantially the same as in example 1, except that the aliphatic water reducing agent was not added.
Comparative example 5:
substantially the same as in example 1, except that a commercially available polycarboxylate water reducer (clean water tank, QSC-polycarboxylate water reducer B) was used in place of the montmorillonite-based polycarboxylate water reducer.
Comparative example 6:
substantially the same as in example 1, except that sodium lauromacrosylsulfonate was not added to the montmorillonite-based polycarboxylate water reducer.
Performance test:
The cement-based grouting materials prepared in examples 1 to 3 and comparative examples 1 to 6 were used as test samples for performance test;
① And (3) testing the outflow time of the sample according to JT/T946-2014 grouting material (agent) for prestressed duct of highway engineering. Firstly, pouring 1725ml of water into an inverted cone, testing outflow time, calibrating the flow cone, then pouring 1725ml of evenly stirred sample into the inverted cone, opening a bottom valve to enable the sample to freely flow out, recording the time required by all outflow, recording the time as the initial outflow time of grouting material, accurately reaching 0.1s, and then measuring the outflow time for 20 min;
② According to the method for testing the strength of cement mortar, the national standard GB/T17671-1999 (ISO method) is referred, a test material is stirred and molded by a mortar stirrer, the test piece is 40mm multiplied by 160mm in size, then the molded test piece is placed into a standard curing box with the temperature of (20+/-2) DEG C and the relative humidity of 95% for curing for 24 hours, then the mold is removed, and then the test piece is placed into water with the temperature of (20+/-2) DEG C for curing for 28d age, and the compression strength and the flexural strength of the test piece are measured.
The test results are shown in table 1 below:
Table 1:
As can be seen from the above Table 1, the cement-based grouting material prepared by the invention has good flowing property, and the better the grouting rate is when the grouting material is applied to a semi-flexible pavement, so that the grouting material is ensured to have good construction effect and pavement durability, and the mechanical property after solidification is excellent, thereby meeting the technical requirement of the semi-flexible pavement on strength.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. The cement-based grouting material for the semi-flexible pavement is characterized by comprising the following components in parts by weight:
70-80 parts of cement, 1-5 parts of mineral powder, 5-10 parts of fly ash, 5-10 parts of silica fume, 20-30 parts of quartz sand, 0.1-0.5 part of montmorillonite-based polycarboxylate water reducer, 0.1-0.5 part of aliphatic water reducer, 0.02-0.025 part of borax, 0.03-0.06 part of cellulose ether, 0.01-0.05 part of early strength agent and 30-40 parts of water;
the preparation method of the montmorillonite-based polycarboxylate superplasticizer comprises the following steps:
Respectively preparing an A component containing acrylic acid and sodium lauryl maleate sulfonate, a B component containing a chain transfer agent and ascorbic acid, and a C component containing hydrogen peroxide, an unsaturated polyether monomer and a silane coupling agent, adding the A component and the B component into the C component, uniformly mixing, adding a nano montmorillonite suspension, and reacting for 1-5 hours;
the weight ratio of the acrylic acid to the sodium lauryl maleate sulfonate to the unsaturated polyether monomer to the silane coupling agent is 1:0.5-1:5-10:0.1-0.5.
2. The cement-based grouting material of claim 1, wherein the unsaturated polyether monomer is any one or a combination of a plurality of methyl allyl polyoxyethylene ether, isopentenyl polyoxyethylene ether and allyl polyoxyethylene ether.
3. The cement-based grouting material of claim 1, wherein the silane coupling agent is any one or a combination of a151, a171, a172 and KH-570.
4. The cement-based grouting material of claim 1, wherein the chain transfer agent is any one or a combination of more of mercaptoethanol, mercaptopropanol, mercaptoacetic acid and mercaptopropionic acid.
5. The cement-based grouting material of claim 1, wherein the C component is heated to 40-50 ℃ and the a component, the B component and the nano montmorillonite suspension are added, and the a component is added before the B component.
6. The cement-based grouting material of claim 1, wherein the reaction temperature is 60-65 ℃.
7. The cement-based grouting material of claim 1, wherein the particle size of the quartz sand is 50 to 100 μm.
8. The cement-based grouting material of claim 1, wherein the early strength agent is any one or a combination of a plurality of triethanolamine, triisopropanolamine, methyldiethanolamine and diisopropylethylamine.
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| CN109734849A (en) * | 2018-12-28 | 2019-05-10 | 苏州弗克技术股份有限公司 | A kind of preparation method of comprehensive polycarboxylate water-reducer |
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| CN109734849A (en) * | 2018-12-28 | 2019-05-10 | 苏州弗克技术股份有限公司 | A kind of preparation method of comprehensive polycarboxylate water-reducer |
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