CN105803942B - Concrete roughening method - Google Patents
Concrete roughening method Download PDFInfo
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- CN105803942B CN105803942B CN201610128257.4A CN201610128257A CN105803942B CN 105803942 B CN105803942 B CN 105803942B CN 201610128257 A CN201610128257 A CN 201610128257A CN 105803942 B CN105803942 B CN 105803942B
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- 239000004567 concrete Substances 0.000 title claims abstract description 104
- 238000007788 roughening Methods 0.000 title claims description 17
- 238000000034 method Methods 0.000 title abstract description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 108
- 239000006004 Quartz sand Substances 0.000 claims abstract description 28
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 28
- 239000004568 cement Substances 0.000 claims description 65
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 39
- 239000002245 particle Substances 0.000 claims description 37
- 239000010881 fly ash Substances 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 30
- 239000000377 silicon dioxide Substances 0.000 claims description 29
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 26
- 239000002956 ash Substances 0.000 claims description 26
- 239000003638 chemical reducing agent Substances 0.000 claims description 26
- 239000010703 silicon Substances 0.000 claims description 26
- 229910052710 silicon Inorganic materials 0.000 claims description 26
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 22
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 21
- 239000004576 sand Substances 0.000 claims description 19
- 235000013312 flour Nutrition 0.000 claims description 17
- 239000002893 slag Substances 0.000 claims description 17
- 238000013459 approach Methods 0.000 claims description 11
- 235000013339 cereals Nutrition 0.000 claims description 10
- 239000008187 granular material Substances 0.000 claims description 8
- HOOWDPSAHIOHCC-UHFFFAOYSA-N dialuminum tricalcium oxygen(2-) Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[Al+3].[Al+3].[Ca++].[Ca++].[Ca++] HOOWDPSAHIOHCC-UHFFFAOYSA-N 0.000 claims description 6
- 239000012798 spherical particle Substances 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 4
- 230000015271 coagulation Effects 0.000 claims description 2
- 238000005345 coagulation Methods 0.000 claims description 2
- 239000002689 soil Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005520 cutting process Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 description 33
- 229910000831 Steel Inorganic materials 0.000 description 31
- 239000010959 steel Substances 0.000 description 31
- 239000010410 layer Substances 0.000 description 12
- 238000007906 compression Methods 0.000 description 11
- 230000006835 compression Effects 0.000 description 11
- 239000000203 mixture Substances 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- 239000000843 powder Substances 0.000 description 9
- 238000002360 preparation method Methods 0.000 description 8
- 230000001186 cumulative effect Effects 0.000 description 7
- 238000009472 formulation Methods 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 239000004575 stone Substances 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000010883 coal ash Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000003467 diminishing effect Effects 0.000 description 3
- 238000005243 fluidization Methods 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000010408 sweeping Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229920002748 Basalt fiber Polymers 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 230000002742 anti-folding effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000008030 superplasticizer Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
- E01C7/14—Concrete paving
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
- E01C7/14—Concrete paving
- E01C7/142—Mixtures or their components, e.g. aggregate
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides a concrete roughing method. The method comprises the following steps that 1, concrete is poured, and a concrete layer is obtained after the surface is leveled; 2, coarse quartz sand to which high-strength mortar adheres is evenly sprayed on the leveled surface of the concrete layer; 3, after 48 h of final set, high-temperature steam curing is adopted for 48-72 h under the curing temperature of 70-90 DEG C, and concrete with a coarse surface is obtained. According to the method, the concrete layer is not damaged, the coarse surface formed on the surface of the concrete layer has the advantages of being firm and reliable, and the binding effect of the concrete and bituminous concrete is much better compared with conventional cutting technology and the like.
Description
Technical field
The present invention relates to a kind of roughening approach of concrete, belong to building material technical field.The present invention is Application No.
201510214459.6th, the applying date is the divisional application of the Chinese invention patent application of 2015-04-29.
Background technology
Used as the construction material being most widely used in the world today, it is relatively low high with fragility to there is bending strength in concrete
Shortcoming, causes concrete to be also easy to produce crack in use and is even broken, so as to have a strong impact on the general safety of building and use the longevity
Life.A large amount of some building structure for existing and position in modern architecture, as high ferro overpass, large span are over strait and river-spanning bridge
The all types of tunnel arch walls such as bridge floor and subway, because its ambient stress is complicated harsh, it is necessary to as high as possible using bending strength
High tenacity concrete material.To improve the toughness of concrete, reinforcing bar is used and largely using so far by relatively early.Afterwards, mechanics
The more preferable each fiber material of performance and toughening effect, such as carbon fiber, glass fibre, good fortune tap fiber, steel wire/steel screen fabric,
Vinal, polyester fiber, durafiber etc. are successively used, and develop corresponding concrete product.
At present, the bridge concrete scheme of preparation be mainly the mineral admixtures such as adding coal ash, miberal powder, silica flour and efficiently
Water reducer, mineral admixture improves concrete density, and then improves the resistance of concrete to chloride ion penetration；However, adding miberal powder, powder
Concrete its toughness prepared by the admixtures such as coal ash cannot still improve well.In addition, patent of invention
ZL201010266982.0 use a diameter of 13 μm, length be the chopped basalt fibre of 10mm as toughening material, be prepared into
To a kind of high tenacity concrete, its bending strength (28d) is 4.3-6.5MPa.Patent of invention ZL201210566338.4 is using poly-
Dralon and steel fibre prepare a kind of high tenacity concrete as toughening material, and its optimal bending strength (28d) is
8.6MPa.Patent of invention CN201110323697.2 discloses a kind of concrete and preparation method thereof.The concrete includes gelling
Material, river sand, super plasticizer, water, steel fibre and polypropylene fibre.Its rupture strength is 17.1-18.6MPa.Above-mentioned patent institute
Although the rupture strength of disclosed concrete is improved to some extent, but in some specific engineering fields, such as Steel Bridge Deck
Mat formation, because its fatigue deformation is big, existing concrete is difficult to meet and requires, in addition, now conventional concrete road surface and pitch
Bonding, be that concrete cutting, milling or ball blast is roughening by concrete surface.But it is first for the surface of concrete
First its intensity is higher, and common process construction is extremely difficult, and equipment loss is huge；Secondly, concrete layer is natively very thin, because it
Characteristic, concrete layer typically only has 5 cm thicks, and common process has certain damage for it, can destroy the structure of itself,
So that steel fibre expose, protective layer it is thinning, cause certain adverse effect.
The content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide a kind of roughening approach of concrete, the roughening side
Method is not destroyed to concrete layer, meanwhile, the matte formed on concrete surface is the characteristics of have solid and reliable, itself and drip
The bond effect of blue or green concrete is far better than techniques such as conventional cuttings.
Realize that the purpose of the present invention can reach by adopting the following technical scheme that：
A kind of roughening approach of concrete, it is characterised in that comprise the following steps：
1) casting concrete, after flattened faces, obtains concrete layer；
2) will be stained with the concrete surface after the rubble sand of high-strength mortar material is spread in uniform in leveling, control is thick
Quartz sand is partially submerged into below the surface of concrete layer；
3) after through final set, using high temperature steam curing, the concrete with rough surface is obtained.
Preferably, the main component of described high-strength mortar material include cement, silicon ash, slag, flyash, silica flour,
Fine quartz sand, nano-calcium carbonate, water, water reducer；
Silicon ash is 10-20 with the weight ratio of cement:100,
Slag is 1-20 with the weight ratio of cement:100,
Flyash is 5-20 with the weight ratio of cement:100,
Silica flour is 30-38 with the weight ratio of cement：100；
Fine quartz sand is 80-150 with the weight ratio of cement:100,
Nano-calcium carbonate is 0.1-5 with the weight ratio of cement:100；
Water-cement ratio is 0.15-0.22；
Water reducer is 0.5-4 with the weight ratio of cement:100.
Wherein：The tricalcium aluminate content of described cement is not more than 8%；Described silicon ash is spheric granules, and particle diameter is 0.1
Between μm -0.2 μm；Described flyash is one-level flyash, and particle of the particle diameter less than 45 μm accounts for more than 90%；Described quartz
The dioxide-containing silica ＞ 95% of powder, average grain diameter is 45 μm of spherical particle；The silica of described fine quartz sand contains
Amount ＞ 95%, particle diameter is between 0.1mm-0.4mm；The particle diameter of described nano-calcium carbonate is between 5-80nm；The water reducer
It is low entraining high-performance water reducing agent, water-reducing rate is more than 35%, and air content is less than 2%.
Preferably, the concrete be a kind of superhigh tenacity concrete, its main component include cement, silicon ash, slag,
Flyash, silica flour, quartz sand, steel fibre, nano-calcium carbonate, water, water reducer；
Silicon ash is 10-20 with the weight ratio of cement:100,
Slag is 1-20 with the weight ratio of cement:100,
Flyash is 5-20 with the weight ratio of cement:100,
Silica flour is 30-38 with the weight ratio of cement：100；
Quartz sand is 80-150 with the weight ratio of cement:100,
The volume volume of steel fibre is the 2.0%-4% of concrete cumulative volume；
Nano-calcium carbonate is 0.1-5 with the weight ratio of cement:100；
Water-cement ratio is 0.15-0.22；
Water reducer is 0.5-4 with the weight ratio of cement:100.
Water-cement ratio refers to the ratio of every cubic meter of concrete water consumption and all gel material contents, Binder Materials weight=
Cement weight+admixture weight；In the present invention, admixture includes silicon ash, slag, flyash.
The concrete, its preparation method comprises the following steps：
1) raw material is got out according to formulation ratio；
2) first respectively by the cement of formula ratio, silicon ash, flyash, slag, silica flour, quartz sand, nano-calcium carbonate, diminishing
Agent, steel fibre are stirred in adding agitating device, and after stirring, the water for adding formula ratio is stirred fluidisation, control
Mixing speed is in 20-48r/min, mixing time 4-8min, you can obtain concrete.
Preferably, tricalcium aluminate (the C of described cement3A) content is not more than 8%.Because C3The shrinkage factor of A is high, aquation
It is hot big, C3The larger cement of A contents easily ftractures because of the temperature shrinkage of early stage, self-constriction and dry contraction, and and concrete
The adaptability of additive is deteriorated, and concrete false set and plastic shrinkage is occurred.As content be more than 8%, then slump through when
Loss is big, and the problem for early-age shrinkage cracking easily occur, intensity is still enough.
Preferably, described silicon ash is spheric granules, particle diameter is between 0.1 μm -0.2 μm.Present invention control silicon ash grain
Footpath is 0.1-0.2 μm, is highly active mineral admixture, and forming good level with cement, flyash matches somebody with somebody, and participates in hydrated cementitious, is improved
Intensity.Silicon ash particle diameter is excessive, then poor activity, and pressure-proof and snap-resistent intensity can have an impact.If not being spheric granules, then slump can be inclined
It is small.
Preferably, described flyash is one-level flyash, particle of the particle diameter less than 45 μm accounts for more than 90%.So set
Meter ensure that the intensity and workability of concrete.
Preferably, the dioxide-containing silica ＞ 95% of described silica flour, average grain diameter is 45 μm of spherical particle.
Preferably, the dioxide-containing silica ＞ 95% of described quartz sand, particle diameter is between 0.4mm-1.3mm.So
It is designed to ensure the intensity and workability of concrete.
Preferably, steel fibre is divided into two kinds of the first steel fibre and the second steel fibre, the first steel fibre it is a diameter of
0.12mm-0.16mm, a length of 6mm-8mm, volume volume are the 0.5%-1.5% of concrete cumulative volume；Second steel fibre it is straight
Footpath is 0.18mm-0.22mm, a length of 12mm-14mm, and volume volume is the 1.5%-2.5% of concrete cumulative volume.So design
The rupture strength of concrete can be improved and improve workability.
Preferably, described steel fibre is copper facing high-intensity fiber, tensile strength is more than 2000MPa.
Preferably, the particle diameter of nano-calcium carbonate is between 5-80nm.So it is designed to improve rupture strength.
Preferably, the water reducer is low entraining high-performance water reducing agent, water-reducing rate is more than 35%, and air content is less than 2%.
Preferably, the weight ratio of the gross weight of the cement, silicon ash, flyash, slag and quartz sand is 0.8-1.5.
Preferably, the compression strength 120-180MPa of described concrete, rupture strength 20-40MPa, with good
Workability, slump >=180mm is pumpable cast-in-place.
Preferably, in step 2) in, insert depth is 1-4mm.
Preferably, in step 3) in, through final set in 48 hours after, using high temperature steam curing, curing temperature is 70-90
DEG C, the time is 48-72 hours, obtains the concrete with rough surface.
Formulation Design Principle of the invention is as follows：
In inventive formulation, larger amount of high efficiency water reducing agent is mixed, the particle diameter of quartz sand is controlled, with cement granules, fine coal
Ash particle, silicon ash particle etc. form a kind of good grain composition, then by controlling the weight ratio of powder body material and quartz sand, most
Afterwards, and above all steel fibre is divided into 2 kinds of different incorporations of thickness, can greatly reduce because steel fibre cross one another it is agglomerating
The reduction of the concrete workability for causing.In addition, silicon ash is less than 10 with the weight ratio of cement：When 100, intensity is extremely difficult to
150MPa, higher than 20：When 100, water requirement is too big, and concrete workability is far short of what is expected.The weight of slag and cement is than 1-20, volume
It is too high, influence intensity.Flyash is less than 5 with the weight ratio of cement：When 100, grain composition, concrete flowability are not become
Difference；Higher than 20:100 influence intensity.
Preferably, the described rubble sand for being stained with high-strength mortar material is adopted and prepared with the following method：It is 6- by particle diameter
The rubble sand of 10mm is put into high-strength mortar material, and rubble sand is swept along using high-strength mortar material, will be unnecessary high-strength after sweeping along
Mortar is screened out, in high-strength mortar material of the rubble sand surface adhesion a layer thickness within 1mm.
The beneficial effects of the present invention are：
1st, the present invention improves a kind of roughening approach of brand-new concrete surface, and described roughening approach is to concrete layer
Without destruction, meanwhile, the matte formed on concrete surface is the characteristics of have solid and reliable, and it is viscous with bituminous concrete
Knot effect is far better than techniques such as conventional cuttings.
2nd, concrete of the present invention is a kind of superhigh tenacity concrete (abbreviation STC), is blended by mixing mineral
Expect, improve intensity using the high efficiency water reducing agent reduction ratio of mud, its toughness is improved by mixing a large amount of steel fibres, additionally by control
The grain composition of silica flour, quartz sand and admixture, mix nano-calcium carbonate to ensure the mobile performance of mixture, with resistance to compression
Intensity is high, toughness is high, but with good workability, it is pumpable cast-in-place, it is to be held for underground structure, stake, bridge, bridge floor etc.
The good material of weight structure thing.Concrete of the present invention, according to normal concrete mechanical property test standard GB/
T50081-2002 are detected, its compression strength 120-180MPa, rupture strength 20-40MPa, with good application property
Can, slump >=180mm is pumpable cast-in-place.Its compression strength be more than 120MPa, rupture strength be more than 20MPa, high-strength durable,
Can resistance to compression, shearing resistance, antifatigue, bearing capacity is extremely strong；Embedding mortar uses high-strength mortar, compression strength >=100MPa, mobility
Good, easy construction, durability is high.
Specific embodiment
Below, with reference to specific embodiment, the present invention is described further：
Embodiment 1：
A kind of roughening approach of superhigh tenacity concrete, comprises the following steps：
1) casting concrete in a mold, after flattened faces, obtains concrete layer；
2) will be stained with the concrete surface after the rubble sand of high-strength mortar material is spread in uniform in leveling, control is spread
The dynamics of cloth quartz sand so that below the surface of quartz sand insertion concrete layer, insert depth is 1-4mm；
3) after through final set in 48 hours, using high temperature steam curing, curing temperature is 70-90 DEG C, and the time is 48-72 hours,
Obtain the concrete with rough surface.
The described rubble sand for being stained with high-strength mortar material is adopted and prepared with the following method：It is the rubble English of 8mm by particle diameter
Sand is put into high-strength mortar material, and rubble sand is swept along using high-strength mortar material, removes unnecessary high-strength mortar material screen after sweeping along,
High-strength mortar material of the rubble sand surface adhesion a layer thickness within 2mm.
The main component of described high-strength mortar material include cement, silicon ash, slag, flyash, silica flour, fine quartz sand,
Nano-calcium carbonate, water, water reducer；
Silicon ash is 10-20 with the weight ratio of cement:100,
Slag is 1-20 with the weight ratio of cement:100,
Flyash is 5-20 with the weight ratio of cement:100,
Silica flour is 30-38 with the weight ratio of cement：100；
Fine quartz sand is 80-150 with the weight ratio of cement:100,
Nano-calcium carbonate is 0.1-5 with the weight ratio of cement:100；
Water-cement ratio is 0.15-0.22；
Water reducer is 0.5-4 with the weight ratio of cement:100.
Wherein：The tricalcium aluminate content of described cement is not more than 8%；Described silicon ash is spheric granules, and particle diameter is 0.1
Between μm -0.2 μm；Described flyash is one-level flyash, and particle of the particle diameter less than 45 μm accounts for more than 90%；Described quartz
The dioxide-containing silica ＞ 95% of powder, average grain diameter is 45 μm of spherical particle；The silica of described fine quartz sand contains
Amount ＞ 95%, particle diameter is between 0.1mm-0.4mm；The particle diameter of described nano-calcium carbonate is between 5-80nm；The water reducer
It is low entraining high-performance water reducing agent, water-reducing rate is more than 35%, and air content is less than 2%.
Above-mentioned high-strength mortar compression strength is 133MPa, the preparation method phase of its preparation method and superhigh tenacity concrete
Together.
The concrete is a kind of superhigh tenacity concrete, and its preparation method comprises the following steps：
1) raw material is got out according to formulation ratio:1 part of cement, 0.1 part of silicon ash, 0.05 part of slag, 0.05 part of flyash, stone
0.3 part of English powder, 1 part of quartz sand, volume volume account for the first steel fibre of the 1.5% of concrete cumulative volume, and volume volume accounts for coagulation
Second steel fibre of the 2% of native cumulative volume, 0.03 part of nano-calcium carbonate, 0.22 part of water, 0.01 part of water reducer；
2) first respectively by the cement of formula ratio, silicon ash, flyash, slag, silica flour, quartz sand, nano-calcium carbonate, diminishing
Agent, the first steel fibre, the second steel fibre are stirred in adding agitating device, and after stirring, the water for adding formula ratio enters
Row stirring fluidisation, controls mixing speed 20-48r/min, mixing time 4-8min, you can obtain concrete.
In the present embodiment, the tricalcium aluminate (C of cement3A) content is not more than 8%.Silicon ash is spheric granules, and particle diameter is in 0.1 μ
Between m-0.2 μm.Flyash is one-level flyash, and particle of the particle diameter less than 45 μm accounts for more than 90%.The silica of silica flour
Content ＞ 95%, average grain diameter is 45 μm of spherical particle.The dioxide-containing silica ＞ 95% of quartz sand, particle diameter is in 0.4mm-
Between 1.3mm.Steel fibre is divided into two kinds of the first steel fibre and the second steel fibre, a diameter of 0.12mm- of the first steel fibre
0.16mm, a length of 6mm-8mm；A diameter of 0.18mm-0.22mm of the second steel fibre, a length of 12mm-14mm.Steel fibre is copper facing
High-intensity fiber, tensile strength is more than 2000MPa.The particle diameter of nano-calcium carbonate is between 5-80nm.So it is designed to improve anti-
Folding intensity.Water reducer is low entraining high-performance water reducing agent, and water-reducing rate is more than 35%, and air content is less than 2%.
Detected according to normal concrete mechanical property test standard GB/T50081-2002, the performance of concrete：Collapse
Degree of falling 230mm, compression strength 146MPa, rupture strength 29MPa.
With reference to existing《Highway engineering building stones testing regulations》The oblique scissor test in interface is carried out, according to the boundary that the technical program is surveyed
Face shearing strength reaches 3.6MPa, significantly larger than conventional roughening technique.
Embodiment 2：
The characteristics of the present embodiment is：
The concrete is a kind of superhigh tenacity concrete, and its preparation method comprises the following steps：
1) raw material is got out according to formulation ratio:1 part of cement, 0.2 part of silicon ash, 0.02 part of slag, 0.05 part of flyash, stone
0.35 part of English powder, 0.8 part of quartz sand, volume volume account for the first steel fibre of the 1.0% of concrete cumulative volume, and volume volume accounts for mixed
Second steel fibre of the 2.5% of solidifying soil cumulative volume, 0.03 part of nano-calcium carbonate, 0.20 part of water, 0.014 part of water reducer；
2) first respectively by the cement of formula ratio, silicon ash, flyash, slag, silica flour, quartz sand, nano-calcium carbonate, diminishing
Agent, the first steel fibre, the second steel fibre are stirred in adding agitating device, and after stirring, the water for adding formula ratio enters
Row stirring fluidisation, controls mixing speed 20-48r/min, mixing time 4-8min, you can obtain concrete.
Other are same as Example 1.
Detected according to normal concrete mechanical property test standard GB/T50081-2002, performance：Slump
188mm, compression strength 176MPa, rupture strength 35MPa.
With reference to existing《Highway engineering building stones testing regulations》The oblique scissor test in interface is carried out, according to the boundary that the technical program is surveyed
Face shearing strength reaches 4.7MPa, significantly larger than conventional roughening technique.
Embodiment 3：
A kind of roughening approach of normal concrete, comprises the following steps：
1) in a mold or job site casting concrete, after flattened faces, concrete layer is obtained；
2) will be stained with the concrete surface after the rubble sand of high-strength mortar material is spread in uniform in leveling；
3) after through final set in 24 hours, using common moisture-keeping maintaining, curing temperature is natural temperature, and the time is 7-28 days, is obtained
To the concrete with rough surface.
The described rubble sand for being stained with high-strength mortar material is adopted and prepared with the following method：It is the rubble English of 8mm by particle diameter
Sand is put into high-strength mortar material, and rubble sand is swept along using high-strength mortar material, removes unnecessary high-strength mortar material screen after sweeping along,
High-strength mortar material of the rubble sand surface adhesion a layer thickness within 2mm.
The formula of described high-strength mortar material is as follows：
Silicon ash is 10-20 with the weight ratio of cement:100,
Slag is 1-20 with the weight ratio of cement:100,
Flyash is 5-20 with the weight ratio of cement:100,
Silica flour is 30-38 with the weight ratio of cement：100；
Quartz sand is 80-150 with the weight ratio of cement:100,
Nano-calcium carbonate is 0.1-5 with the weight ratio of cement:100；
Water-cement ratio is 0.15-0.22；
Water reducer is 0.5-4 with the weight ratio of cement:100.
Wherein：The tricalcium aluminate content of described cement is not more than 8%；Described silicon ash is spheric granules, and particle diameter is 0.1
Between μm -0.2 μm；Described flyash is one-level flyash, and particle of the particle diameter less than 45 μm accounts for more than 90%；Described quartz
The dioxide-containing silica ＞ 95% of powder, average grain diameter is 45 μm of spherical particle；The dioxide-containing silica of described quartz sand
＞ 95%, particle diameter is between 0.1mm-0.4mm；The particle diameter of described nano-calcium carbonate is between 5-80nm；The water reducer is
Low entraining high-performance water reducing agent, water-reducing rate is more than 35%, and air content is less than 2%.
Above-mentioned high-strength mortar compression strength is 133MPa.
The preparation method of normal concrete, comprises the following steps：
1) pour mode according to conventional concrete and pour concrete:1 part of cement, 4 parts of rubble, 2.5 parts of sand, 0.6 part of water；
It is agitated it is good after, you can be transported in mould or cast in situs, shaping of vibrating be aided with when pouring.
Detected according to normal concrete mechanical property test standard GB/T50081-2002, performance：Slump
168mm, compression strength 36MPa, rupture strength 3.5MPa.
With reference to existing《Highway engineering building stones testing regulations》The oblique scissor test in interface is carried out, according to the boundary that the technical program is surveyed
Face shearing strength reaches 2.7MPa, higher than conventional roughening technique.
For a person skilled in the art, technical scheme that can be as described above and design, make other each
Plant corresponding change and deform, and all these changes and deforms the protection model that should all belong to the claims in the present invention
Within enclosing.
Claims (3)
1. a kind of roughening approach of concrete, it is characterised in that comprise the following steps：
1）Casting concrete, after flattened faces, obtains concrete layer；
2）To be stained with the concrete surface after the rubble sand of high-strength mortar material is spread in uniform in leveling, control rubble English
Sand is partially submerged into below the surface of concrete layer；
3）After through final set, using high temperature steam curing, the concrete with rough surface is obtained;
The main component of described high-strength mortar material includes cement, silicon ash, slag, flyash, silica flour, fine quartz sand, nanometer
Calcium carbonate, water, water reducer;
Silicon ash is 10-20 with the weight ratio of cement:100,
Slag is 1-20 with the weight ratio of cement:100,
Flyash is 5-20 with the weight ratio of cement:100,
Silica flour is 30-38 with the weight ratio of cement：100；
Fine quartz sand is 80-150 with the weight ratio of cement:100,
Nano-calcium carbonate is 0.1-5 with the weight ratio of cement:100;
Water-cement ratio is 0.15-0.22;
Water reducer is 0.5-4 with the weight ratio of cement:100;
Wherein：The tricalcium aluminate content of described cement is not more than 8%；Described silicon ash be spheric granules, particle diameter 0.1 μm-
Between 0.2 μm；Described flyash is one-level flyash, and particle of the particle diameter less than 45 μm accounts for more than 90%；Described silica flour
Dioxide-containing silica ＞ 95%, average grain diameter is 45 μm of spherical particle；The dioxide-containing silica ＞ of described fine quartz sand
95%, particle diameter is between 0.1mm-0.4mm；The particle diameter of described nano-calcium carbonate is between 5-80nm；The water reducer draws for low
Gas high-performance water reducing agent, water-reducing rate is more than 35%, and air content is less than 2%.
2. the roughening approach of concrete according to claim 1, it is characterised in that：In step 2）In, insert depth is 1-
4mm。
3. the roughening approach of concrete according to claim 1, it is characterised in that：In step 3）In, through final set in 48 hours
Afterwards, using high temperature steam curing, curing temperature is 70-90 DEG C, and the time is 48-72 hours, obtains the coagulation with rough surface
Soil.
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|---|---|---|---|---|
| JPH07206548A (en) * | 1994-01-17 | 1995-08-08 | Mitsubishi Materials Corp | Production of permanently laying mold for highly durable concrete |
| CN101054854A (en) * | 2007-04-30 | 2007-10-17 | 中铁大桥局集团第二工程有限公司 | Construction method of quick roughening of concrete |
| CN102373666A (en) * | 2011-09-19 | 2012-03-14 | 江苏省交通科学研究院股份有限公司 | Method for quickly roughening concrete by retarder flushing |
| CN104193222A (en) * | 2014-08-26 | 2014-12-10 | 北京金港建设股份有限公司 | Epoxy resin fiber reinforced concrete for repair and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6113379A (en) * | 1998-07-02 | 2000-09-05 | Anchor Wall Systems, Inc. | Process for producing masonry block with roughened surface |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07206548A (en) * | 1994-01-17 | 1995-08-08 | Mitsubishi Materials Corp | Production of permanently laying mold for highly durable concrete |
| CN101054854A (en) * | 2007-04-30 | 2007-10-17 | 中铁大桥局集团第二工程有限公司 | Construction method of quick roughening of concrete |
| CN102373666A (en) * | 2011-09-19 | 2012-03-14 | 江苏省交通科学研究院股份有限公司 | Method for quickly roughening concrete by retarder flushing |
| CN104193222A (en) * | 2014-08-26 | 2014-12-10 | 北京金港建设股份有限公司 | Epoxy resin fiber reinforced concrete for repair and preparation method thereof |
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