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Anti-cracking high-performance concrete and preparation method thereof

A high-performance concrete, anti-cracking technology, applied in the field of concrete, can solve the problems of decreased mechanical properties, low apparent density, insufficient strength, etc., and achieve the effects of improving overall performance, increasing binding capacity, and being easy to disperse.

Inactive Publication Date: 2016-04-20
BEIJING TONGYOU CONCRETE POURING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with ordinary foamed concrete, the material prepared by the present invention has technical advantages such as low apparent density, small thermal conductivity, and not easy to shrink and crack. However, this concrete has insufficient strength, and after the cracking occurs, the mechanical properties would produce a sharp drop

Method used

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  • Anti-cracking high-performance concrete and preparation method thereof

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preparation example Construction

[0036] The preparation method of concrete of the present invention is:

[0037] Step 1: Add porous granular aggregate, layered silicate minerals, water-reducing retarder, and bentonite to the cement, stir for 30 minutes, add air-entraining agent and continue stirring for 30 minutes, and then divide the obtained mixture into 5 : two parts of mix I and mix II of 3;

[0038] Step 2: Epoxy resin emulsion, alkali-resistant glass fiber and polyethylene oxide are added in the mixture I, and stirred for 40 minutes;

[0039] Step 3: Add the curing agent into the mixture II, and stir thoroughly for 30 minutes;

[0040] Step 4: Mix Mixture I and Mixture II, and then stir thoroughly for 30 minutes, and then put them into a mold for molding.

[0041] The embodiments of the present invention are all prepared by the above method, wherein the quality of each substance adopts the numerical value in the specific embodiment.

[0042] experiment method:

[0043] According to the concrete perf...

Embodiment 1

[0045] The concrete of the present embodiment comprises following parts by weight material:

[0046] Cement 7kg;

[0047] Mica powder 1kg;

[0048] Sodium dodecylbenzenesulfonate 0.05kg;

[0049] Bentonite 0.5kg;

[0050] Water-reducing retarder 0.3kg;

[0051] Vitrified microbeads 4kg;

[0052] Alkali-resistant glass fiber 0.35kg;

[0053] Polyethylene oxide 0.03kg;

[0054] Epoxy resin emulsion 1.3kg;

[0055] Aminoethylpiperazine 0.6kg.

Embodiment 2

[0057] The concrete of the present embodiment comprises following parts by weight material:

[0058] Cement 8.5kg;

[0059] Mica powder 1.2kg;

[0060] Sodium dodecylbenzenesulfonate 0.06kg;

[0061] Bentonite 0.3kg;

[0062] Water-reducing retarder 0.02kg;

[0063] Vitrified microbeads 6kg;

[0064] Alkali-resistant glass fiber 0.5kg;

[0065] Polyethylene oxide 0.05kg;

[0066] Epoxy resin emulsion 1kg;

[0067] Aminoethylpiperazine 0.5kg.

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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

technical field [0001] The present invention relates to a kind of concrete, more specifically, it relates to a kind of anti-crack type high-performance concrete and its preparation method. Background technique [0002] Concrete: refers to the collective name of engineering composite materials that use cementitious materials to cement aggregates into a whole. Generally speaking, the term concrete refers to the cement concrete obtained by using cement as the cementitious material, sand and stone as the aggregate; mixed with water (may contain admixtures and admixtures) in a certain proportion, and stirred. Concrete, which is widely used in civil engineering. [0003] The Chinese patent application number CN201110276329.7 discloses a super-low apparent density high-performance foam concrete material and its preparation method. The mass percentage composition of the material is: cement: admixture: porous granular aggregate: polymer: fiber: Foaming agent: water reducing agent: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
CPCC04B28/00C04B2111/343C04B2201/50C04B2201/52C04B14/20C04B24/20C04B14/104C04B2103/302C04B2103/22C04B14/22C04B14/44C04B24/32C04B24/281C04B24/128C04B14/042
Inventor 董中华何宪伟杜伟安春鹏
Owner BEIJING TONGYOU CONCRETE POURING TECH CO LTD
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