CN105503052A - Anti-cracking high-performance concrete and preparation method thereof - Google Patents

Anti-cracking high-performance concrete and preparation method thereof Download PDF

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Publication number
CN105503052A
CN105503052A CN201510951659.XA CN201510951659A CN105503052A CN 105503052 A CN105503052 A CN 105503052A CN 201510951659 A CN201510951659 A CN 201510951659A CN 105503052 A CN105503052 A CN 105503052A
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concrete
performance concrete
compound
minutes
water
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CN201510951659.XA
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Chinese (zh)
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CN105503052B (en
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董中华
何宪伟
杜伟
安春鹏
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北京砼友混凝土浇筑技术有限公司
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/34Non-shrinking or non-cracking materials
    • C04B2111/343Crack resistant materials
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • C04B2201/52High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]

Abstract

The invention discloses anti-cracking high-performance concrete. The anti-cracking high-performance concrete includes, by weight, 70-120 parts of cement, 30-60 parts of layered silicate minerals, 0.5-1 part of an air-entraining agent, 3-10 parts of bentonite, 0.2-1.2 parts of a water reducing retarder, 20-60 parts of porous particle aggregate, 3-5 parts of alkali-resistant glass fiber, 0.2-0.5 part of polyoxyethylene, 10-20 parts of epoxy resin emulsion and 5-10 parts of a curing agent. The anti-cracking anti-seepage capabilities of the concrete are improved, and the mechanical properties of the concrete are improved. A preparation method of the anti-cracking high-performance concrete comprises the steps that the porous particle aggregate, the layered silicate minerals, the water reducing retarder and the bentonite are added into cement and are stirred, then the air-entraining agent is added to continue to perform stirring, and the obtained mixture is divided into a mixed material I and a mixed material II; the epoxy resin emulsion, the alkali-resistant glass fiber and the polyoxyethylene are added into the mixed material I and are stirred for 40 minutes; the curing agent is added into the mixed material II and is fully stirred for 30 minutes; the mixed material I and the mixed material II are mixed, are fully stirred for 30 minutes and then are put into a mold for forming.

Description

A kind of anti-cracking type high performance concrete and preparation method thereof

Technical field

The present invention relates to a kind of concrete, more particularly, it relates to a kind of anti-cracking type high performance concrete and preparation method thereof.

Background technology

Concrete: refer to the general designation being cemented to overall engineered composite material by gelling material by gathering materials.Usually concrete one word said refers to makes gelling material with cement, and sand, masonry gather materials; Coordinate by a certain percentage with water (can contain admixture and adulterant), the cement concrete obtained through stirring, also claims normal concrete, and it is widely used in civil engineering work.

Application number is that the Chinese patent of CN201110276329.7 discloses a kind of ultralow apparent density high-performance foam concrete material and preparation method, the mass percent composition of this material is: cement: blended material: porous particle aggregate: polymkeric substance: fiber: foaming agent: water reducer: hardening accelerator: economization agent: stratified material: water=(30% ~ 70%): (0% ~ 30%): (0% ~ 30%): (0.3% ~ 5%): (0.3% ~ 3%): (0.3% ~ 0.5%): (0.1% ~ 0.5%): (0% ~ 1.5%): (0.1% ~ 0.5%): (0% ~ 3%): (26% ~ 50%), above-mentioned materials mass percent total amount meets 100%.Material prepared by the present invention is compared with regular foam concrete, there is the technological merit such as low bulk density, less thermal conductivity, not easily dry shrinkage and cracking, but this concrete Shortcomings in intensity, and cracking occur after, mechanical property can produce and sharply decline.

Summary of the invention

For the deficiency that prior art exists, the first goal of the invention of the present invention is to provide a kind of anti-cracking type high performance concrete.

For achieving the above object, the invention provides following technical scheme: a kind of anti-cracking type high performance concrete, wherein: comprise following weight part material:

Cement 70-120 part;

Layer silicate mineral 8-20 part;

Air entrapment agent 0.5-1 part;

Wilkinite 3-10 part;

Water-reducing and set-retarding admixture 0.2-1.2 part;

Porous particle aggregate 20-60 part;

Alkali resistant glass fibre 3-5 part;

Polyoxyethylene 0.2-0.5 part;

Epoxy resin latex 10-20 part;

Solidifying agent 5-10 part.

By adopting technique scheme, epoxy resin latex just starts to carry out being cross-linked, solidifying at the early stage of hydrated cementitious, cement concrete is made to form the structure of epoxy network intercalation shape, substantially increase concrete bend resistance intensity, waterproof, seepage control is saturating, and there is lower quality, and the function of heat-insulation and heat-preservation; Solidifying agent can the curing reaction of gate ring epoxy resins, thus makes epoxy resin complete curing cross-linked to form reticulated structure.

Layer silicate mineral can be formed certain laminar structured in concrete, have heat insulation, fp ability preferably, and the surface of laminate structure is comparatively fine and smooth, and anti crack performance is better, waterproof, seepage control; And when comparatively huge destructive force, the skin of laminate structure damages and can not have influence on internal performance, thus has good protected effect.

The interpolation of porous particle aggregate can be added into cavity structure in concrete, thus alleviate concrete quality, there is good sound-insulating and heat-insulating effect, and the structure of cavity has adjustment space when temperature and humidity change during dilation can to concrete, avoids inside concrete stress concentration thus destroys internal structure; And jointly form fenestral fabric with the epoxy resin of crosslinking curing, intensity is better.

Alkali resistant glass fibre is the rib material of Concrete Structure, is 100% inorganic fibre, is the ideal substitute of steel and asbestos in nonweight-bearing cement components.The feature of alkali resistant glass fibre is that alkali resistance is good, be highly resistant to the erosion of high alkaloid substance in cement, bond stress is large, Young's modulus, shock resistance, tension, bending strength is high, do not fire, freeze proof, resistance to temperature, humidity changing capability is strong, cracking resistance, anti-permeability performance is remarkable, but in the course of processing, the dispersive ability of glass fibre in concrete is not enough, easily cause each position intensity different, performance is uneven, add polyoxyethylene, polyoxyethylene has larger viscosity at low concentrations, glass fibre fully can disperse when concrete mixes under the viscous effect of polyethylene oxide solutions, thus improve concrete overall performance.

Air entrapment agent can at concrete mix introducing air and form bubble small, closed and stable in a large number in the process of mixing and stirring, the formation of bubble can improve concrete folding strength and barrier performance, the bubble of air entrapment agent can be formed in the emptying aperture place of porous particle aggregate, thus the bubble cavity inner wall formed is more firmly stable, survivable, strengthen concrete intensity.

In concrete use procedure, if produce the situations such as crack, wilkinite can absorb the moisture entered from crack, expand, thus there is certain gap make up effect, and wilkinite can produce certain prestress after absorption moisture in concrete, can make so effectively to be resisted owing to shrinking the tensile stress caused, there will not be crack phenomenon.

In use, the edge contact place of concrete blocks is due to the acting in conjunction of air entrapment agent and laminated structure, the border of concrete blocks can form certain grafting, increase the binding ability of concrete blocks, dispersion is more prone to time stressed, when using on a large scale, there is good raising to concrete overall performance.

The present invention is set to further: layered silicate minerals is the mixture of one or more in mica powder, talcum powder and kaolinite powder.

The present invention is set to further: described air entrapment agent is the mixture of one or more in Sodium dodecylbenzene sulfonate, tetradecyl benzene sulfonic acid sodium salt and cetyl benzenesulfonic acid sodium.

The present invention is set to further: described porous particle aggregate adopts glass bead.

The present invention is set to further: described solidifying agent is aminoethyl piperazine.

The present invention is set to further: the preparation method of described water-reducing and set-retarding admixture is: the first step, take tapioca (flour) as raw material, and 95% ethanol is dispersion agent, and concentrated hydrochloric acid is that catalyzer is hydrolyzed reaction, and temperature of reaction is 70 DEG C, and the reaction times is 8h;

Second step, adopts limit dextrin: DMF: thionamic acid mass ratio equals 1: 2: 0.5, temperature of reaction 90 DEG C, reaction times 1h.

By adopting technique scheme, starch exists in a large number at occurring in nature, by the chemical modification to starch structure, produce with glucose long-chain for hydrophobic group, hydroxyl and sulfonic group are hydrophilic group, thus reach the effect of slow setting diminishing, and this water-reducing and set-retarding admixture has good dispersion effect, dispersion that can be good in cement.

Second goal of the invention of the present invention is for providing a kind of preparation method of anti-cracking type high performance concrete:

A kind of anti-cracking type high performance concrete of the present invention, its preparation method is: step one: join in cement by porous particle aggregate, layer silicate mineral, water-reducing and set-retarding admixture, wilkinite, stir after 30 minutes, add air entrapment agent and continue stirring 30 minutes, then the compound of gained is divided into two parts of compound I and the compound II of 5:3;

Step 2: epoxy resin latex, alkali resistant glass fibre and polyoxyethylene are added in compound I, stirs 40 minutes;

Step 3: added by solidifying agent in compound II, through the abundant stirring of 30 minutes;

Step 4: compound I and compound II is mixed, more fully stirred through 20-40 minute, then put into mould molding.

Embodiment

The Sodium dodecylbenzene sulfonate that air entrapment agent selects Guangzhou Yu Hetian Chemical Industry Science Co., Ltd to produce; The PE0100 ten thousand German BASF polyoxygenated vinylchlorid that polyoxyethylene adopts Guangzhou Li Hou trade Co., Ltd to provide; The alkali resistant glass fibre that alkali resistant glass fibre adopts Yancheng City Ai Liwei fibre product company limited to produce; The ultrafine mica powder that mica powder adopts Lingshou County, Hebei province starlight mica powder factory to produce; The green people that talcum powder adopts Beijing Zong Yaojiali commerce and trade company limited to supply 2500 order talcum powder difficult to understand; The kaolin that kaolin powder adopts Shijiazhuang Rui Song Refractory Co., ltd to produce; Glass bead adopts 30 order glass beads of gloomy perlite application company limited supply in Xinyang; The N-AEP that aminoethyl piperazine adopts Suzhou subfamily Science and Technology Co., Ltd. to produce.

Concrete preparation method of the present invention is:

Step one: join in cement by porous particle aggregate, layer silicate mineral, water-reducing and set-retarding admixture, wilkinite, stirred after 30 minutes, added air entrapment agent and continued stirring 30 minutes, then the compound of gained is divided into two parts of compound I and the compound II of 5:3;

Step 2: epoxy resin latex, alkali resistant glass fibre and polyoxyethylene are added in compound I, stirs 40 minutes;

Step 3: added by solidifying agent in compound II, through the abundant stirring of 30 minutes;

Step 4: compound I and compound II is mixed, more fully stirred through 30 minutes, then put into mould molding.

Embodiments of the invention all adopt aforesaid method to make, and wherein the quality of each material adopts the numerical value in specific embodiment.

Test method:

To embodiments of the invention and comparative example, the method for the testing concrete performance specified according to GB/T50082-2009 " Standard for test methods of longterm performance and durability of ordinary concrete standard " carries out that infiltration is highly tested, chloride-penetration resistance experiment, early-age crack experiment; Concrete crushing strength experiment is carried out according to GB/T50081-2002 " standard for test methods of mechanical properties of ordinary concrete ".

Embodiment one:

The concrete of the present embodiment comprises following weight part material:

Cement 7kg;

Mica powder 1kg;

Sodium dodecylbenzene sulfonate 0.05kg;

Wilkinite 0.5kg;

Water-reducing and set-retarding admixture 0.3kg;

Glass bead 4kg;

Alkali resistant glass fibre 0.35kg;

Polyoxyethylene 0.03kg;

Epoxy resin latex 1.3kg;

Aminoethyl piperazine 0.6kg.

Embodiment two:

The concrete of the present embodiment comprises following weight part material:

Cement 8.5kg;

Mica powder 1.2kg;

Sodium dodecylbenzene sulfonate 0.06kg;

Wilkinite 0.3kg;

Water-reducing and set-retarding admixture 0.02kg;

Glass bead 6kg;

Alkali resistant glass fibre 0.5kg;

Polyoxyethylene 0.05kg;

Epoxy resin latex 1kg;

Aminoethyl piperazine 0.5kg.

Embodiment three:

The concrete of the present embodiment comprises following weight part material:

Cement 9kg;

Mica powder 1.7kg;

Sodium dodecylbenzene sulfonate 0.08kg;

Wilkinite 0.7kg;

Water-reducing and set-retarding admixture 0.07kg;

Glass bead 5kg;

Alkali resistant glass fibre 0.44kg;

Polyoxyethylene 0.03kg;

Epoxy resin latex 2kg;

Aminoethyl piperazine 1kg.

Embodiment four:

The concrete of the present embodiment comprises following weight part material:

Cement 10kg;

Mica powder 1.3kg;

Sodium dodecylbenzene sulfonate 0.06kg;

Wilkinite 0.8kg;

Water-reducing and set-retarding admixture 0.09kg;

Glass bead 4.6kg;

Alkali resistant glass fibre 0.34kg;

Polyoxyethylene 0.026kg;

Epoxy resin latex 1.6kg;

Aminoethyl piperazine 0.7kg.

Embodiment five:

The concrete of the present embodiment comprises following weight part material:

Cement 11kg;

Talcum powder 1.6kg;

Tetradecyl benzene sulfonic acid sodium salt 0.09kg;

Wilkinite 1kg;

Water-reducing and set-retarding admixture 0.09kg;

Glass bead 5.3kg;

Alkali resistant glass fibre 0.36kg;

Polyoxyethylene 0.022g;

Epoxy resin latex 1.3kg;

Aminoethyl piperazine 0.66kg.

Embodiment six:

The concrete of the present embodiment comprises following weight part material:

Cement 10.5kg;

Kaolinite powder 1.8kg;

Cetyl benzenesulfonic acid sodium 0.07kg;

Wilkinite 0.4kg;

Water-reducing and set-retarding admixture 0.12kg;

Glass bead 4.3kg;

Alkali resistant glass fibre 0.48kg;

Polyoxyethylene 0.042g;

Epoxy resin latex 1.7kg;

Aminoethyl piperazine 0.72kg.

Embodiment seven:

The concrete of the present embodiment comprises following weight part material:

Cement 12kg;

Kaolinite powder 1.2kg;

Cetyl benzenesulfonic acid sodium 0.08kg;

Wilkinite 0.9kg;

Water-reducing and set-retarding admixture 0.10kg;

Glass bead 3.6kg;

Alkali resistant glass fibre 0.38kg;

Polyoxyethylene 0.032g;

Epoxy resin latex 1.9kg;

Aminoethyl piperazine 0.82kg.

Comparative example one:

The concrete of this comparative example comprises following weight part material:

Cement 11kg;

Mica powder 1.2kg;

Sodium dodecylbenzene sulfonate 0.08kg;

Wilkinite 0.9kg;

Ligno-sulfate based plasticizer 0.10kg;

Glass bead 3.6kg;

Alkali resistant glass fibre 0.38kg;

Polyoxyethylene 0.032g.

Comparative example two:

The concrete of this comparative example comprises following weight part material:

Cement 10kg;

Talcum powder 1.2kg;

Sodium dodecylbenzene sulfonate 0.08kg;

Wilkinite 0.9kg;

Water-reducing and set-retarding admixture 0.10kg;

Glass bead 3.6kg;

Epoxy resin latex 1.9kg;

Aminoethyl piperazine 0.82kg.

Comparative example three:

Cement 10kg;

Porous particle aggregate 1.2kg;

Polymkeric substance 0.9kg;

Glass fibre 0.6kg;

Foaming agent 0.3kg;

Sulfamate water reducer 0.4kg;

Hardening accelerator 0.2kg;

Stratified material 3kg;

Water 3kg.

Comparative example 4:

Cement 12kg;

Kaolinite powder 1.2kg;

Sodium dodecylbenzene sulfonate 0.08kg;

Sulfamate water reducer 0.10kg;

Drift pearl 3.6kg;

Glass fibre 0.38kg;

Epoxy resin latex 1.9kg;

MPD0.82kg。

By obtaining table 1 to the performance test of embodiment and comparative example:

The performance test results table of table 1 embodiment and comparative example

Embodiments of the invention have many-sided excellent properties relative to comparative example as can be seen from Table 1.

The above is only the preferred embodiment of the present invention, protection scope of the present invention be not only confined to above-described embodiment, and all technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (8)

1. an anti-cracking type high performance concrete, is characterized in that: comprise following weight part material:
Cement 70-120 part;
Layer silicate mineral 30-60 part;
Air entrapment agent 0.5-1 part;
Wilkinite 3-10 part;
Water-reducing and set-retarding admixture 0.2-1.2 part;
Porous particle aggregate 20-60 part;
Alkali resistant glass fibre 3-5 part;
Polyoxyethylene 0.2-0.5 part;
Epoxy resin latex 10-20 part;
Solidifying agent 5-10 part.
2. a kind of anti-cracking type high performance concrete according to claim 1, is characterized in that: described water-reducing and set-retarding admixture is made up of W-Gum, DMF and thionamic acid.
3. a kind of anti-cracking type high performance concrete according to claim 1, is characterized in that: layered silicate minerals is the mixture of one or more in mica powder, talcum powder and kaolinite powder.
4. the anti-high performance concrete of one according to claim 1, is characterized in that: described air entrapment agent is the mixture of one or more in Sodium dodecylbenzene sulfonate, tetradecyl benzene sulfonic acid sodium salt and cetyl benzenesulfonic acid sodium.
5. a kind of anti-cracking type high performance concrete according to claim 1, is characterized in that: described porous particle aggregate adopts glass bead.
6. a kind of anti-cracking type high performance concrete according to claim 1, is characterized in that: described solidifying agent is aminoethyl piperazine.
7. a kind of anti-cracking type high performance concrete according to claim 2, it is characterized in that: the preparation method of described water-reducing and set-retarding admixture is: the first step, take W-Gum as raw material, 95% ethanol is dispersion agent, concentrated hydrochloric acid is that catalyzer is hydrolyzed reaction, temperature of reaction is 70 DEG C, and the reaction times is 7h, obtained limit dextrin;
Second step, adopts limit dextrin: DMF: thionamic acid mass ratio equals 1: 3: 0.7, temperature of reaction 80 DEG C, reaction times 1.5h, obtained water-reducing and set-retarding admixture.
8. a kind of anti-cracking type high performance concrete according to claim 1, its preparation method is: step one: join in cement by porous particle aggregate, layer silicate mineral, water-reducing and set-retarding admixture, wilkinite, stir after 30 minutes, add air entrapment agent and continue stirring 30 minutes, then the compound of gained is divided into two parts of compound I and the compound II of 5:3;
Step 2: epoxy resin latex, alkali resistant glass fibre and polyoxyethylene are added in compound I, stirs 40 minutes;
Step 3: added by solidifying agent in compound II, through the abundant stirring of 30 minutes;
Step 4: compound I and compound II is mixed, more fully stirred through 30 minutes, then put into mould molding.
CN201510951659.XA 2015-12-18 2015-12-18 A kind of anti-cracking type high performance concrete and preparation method thereof CN105503052B (en)

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CN106145879A (en) * 2016-07-02 2016-11-23 曹平 A kind of enhancement mode anti-crack concrete
CN106242444A (en) * 2016-07-12 2016-12-21 绍兴职业技术学院 A kind of high-strength environmental protection transparent cement mortar and preparation method thereof
CN106517864A (en) * 2016-09-18 2017-03-22 浙江长兴恒基科技有限公司 Epoxy resin emulsion modified waterproof penetration-resistant agent and concrete preparation method thereof
CN107098651A (en) * 2017-06-03 2017-08-29 合肥雅克丽新型建材有限公司 A kind of environmental-friendly construction material and preparation method thereof
CN107226636A (en) * 2017-06-06 2017-10-03 武汉新绿博恩科技有限公司 A kind of retarder and preparation method thereof
CN107244840A (en) * 2017-05-23 2017-10-13 安徽砼宇特构科技有限公司 Strong concrete box culvert and preparation method thereof
CN107337370A (en) * 2017-05-23 2017-11-10 安徽砼宇特构科技有限公司 High strength fibre concrete additive and preparation method thereof and concrete
CN107500641A (en) * 2017-10-12 2017-12-22 贺州学院 A kind of concrete brick and preparation method thereof
CN107640932A (en) * 2017-09-14 2018-01-30 成都博美实润科技有限公司 A kind of concrete water-proof impervious agent and preparation method thereof
CN107721244A (en) * 2017-09-14 2018-02-23 成都博美实润科技有限公司 A kind of concrete water-proof impervious agent
CN109385046A (en) * 2018-10-22 2019-02-26 福州麦辽自动化设备有限公司 A kind of nanometer composite epoxy resin construction material
CN109704690A (en) * 2019-03-13 2019-05-03 四川农业大学 A kind of concrete and its construction method inhibiting frozen swell and melt settlement
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CN104496348A (en) * 2014-12-03 2015-04-08 王新荣 Lightweight concrete containing polyphenyl granules
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Publication number Priority date Publication date Assignee Title
CN106145879A (en) * 2016-07-02 2016-11-23 曹平 A kind of enhancement mode anti-crack concrete
CN106242444A (en) * 2016-07-12 2016-12-21 绍兴职业技术学院 A kind of high-strength environmental protection transparent cement mortar and preparation method thereof
CN106517864A (en) * 2016-09-18 2017-03-22 浙江长兴恒基科技有限公司 Epoxy resin emulsion modified waterproof penetration-resistant agent and concrete preparation method thereof
CN107337370A (en) * 2017-05-23 2017-11-10 安徽砼宇特构科技有限公司 High strength fibre concrete additive and preparation method thereof and concrete
CN107244840A (en) * 2017-05-23 2017-10-13 安徽砼宇特构科技有限公司 Strong concrete box culvert and preparation method thereof
CN107098651A (en) * 2017-06-03 2017-08-29 合肥雅克丽新型建材有限公司 A kind of environmental-friendly construction material and preparation method thereof
CN107226636A (en) * 2017-06-06 2017-10-03 武汉新绿博恩科技有限公司 A kind of retarder and preparation method thereof
CN107226636B (en) * 2017-06-06 2018-04-06 武汉新绿博恩科技有限公司 A kind of retarder and preparation method thereof
CN107640932A (en) * 2017-09-14 2018-01-30 成都博美实润科技有限公司 A kind of concrete water-proof impervious agent and preparation method thereof
CN107721244A (en) * 2017-09-14 2018-02-23 成都博美实润科技有限公司 A kind of concrete water-proof impervious agent
CN107500641A (en) * 2017-10-12 2017-12-22 贺州学院 A kind of concrete brick and preparation method thereof
CN109385046A (en) * 2018-10-22 2019-02-26 福州麦辽自动化设备有限公司 A kind of nanometer composite epoxy resin construction material
CN109704690A (en) * 2019-03-13 2019-05-03 四川农业大学 A kind of concrete and its construction method inhibiting frozen swell and melt settlement
CN110627439A (en) * 2019-10-08 2019-12-31 武汉理工大学 Ultra-high performance concrete for expansion joint transition area and preparation method thereof
CN110627439B (en) * 2019-10-08 2020-12-22 武汉理工大学 Ultra-high performance concrete for expansion joint transition area and preparation method thereof

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