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Anti-crack water-proofing agent and preparation method thereof

An anti-cracking waterproofing agent, the technology of weight percentage, applied in the field of concrete additives, can solve the problems of decreased bonding strength, inapplicability in places with special requirements for strength and anti-seepage, and insignificant compensation for plastic shrinkage, so as to improve waterproofing and anti-seepage. The effect of improving permeability and improving compactness

Inactive Publication Date: 2015-04-08
WEIFANG ASPECT BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current anti-cracking waterproofing agent has no obvious compensation effect on the plastic shrinkage in the early hardening process, and it is obviously not suitable for places with special requirements for strength and anti-seepage in particularly important projects and emergency projects.
Especially at present, the alkalinity of many expansion agents is high, which will cause the reaction with the alkali aggregate in the concrete, resulting in a decrease in the bonding strength, which has aroused people's high vigilance

Method used

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  • Anti-crack water-proofing agent and preparation method thereof
  • Anti-crack water-proofing agent and preparation method thereof
  • Anti-crack water-proofing agent and preparation method thereof

Examples

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Effect test

Embodiment 1

[0017] In the present embodiment, the anti-cracking and waterproofing agent adopts a mass percentage of 37% of calcium oxide clinker, 18% of gypsum, 34% of dickite, 7% of fly ash, and 4% of wollastonite powder. Calcium oxide clinker, gypsum , the dickite is ground to a certain fineness in a mill, and then mixed with fly ash and wollastonite powder. Or add 37% of calcium oxide clinker, 18% of gypsum, 34% of dickite, 7% of fly ash, and 4% of wollastonite powder into the mill for uniform grinding, and transport it to the homogenization store for homogenization . Then obtain this anti-cracking waterproof agent. The calcium oxide clinker in this embodiment is a single substance obtained by calcining limestone powder above 1500°C, and its weight ratio and its components are as follows: SiO 2 6.95%, Al 2 o 3 5.50%; Fe 2 o 3 2.21%, CaO 82.04%, MgO 0.82%, loss on ignition 1.26%, and the rest are unavoidable impurities, and the weight percentage of free calcium oxide in the calciu...

Embodiment 2

[0020] In the present embodiment, the anti-cracking waterproofing agent adopts a mass ratio of calcium oxide clinker 39%, gypsum 19%, dickite 33%, fly ash 6%, wollastonite powder 3%, calcium oxide clinker, gypsum, ground The stone is ground to a certain fineness in the mill, and then mixed with fly ash and wollastonite powder. Or add 39% of calcium oxide clinker, 19% of gypsum, 33% of dickite, 6% of fly ash, and 3% of wollastonite powder into the mill for uniform grinding, and transport it to the homogenization warehouse for homogenization . Then obtain this anti-cracking waterproof agent. Other can refer to embodiment 1. The calcium oxide clinker in this embodiment is a single substance obtained by calcining limestone powder above 1500°C, and its weight ratio and its components are as follows: SiO 2 7.05%, Al 2 o 3 5.30%; Fe 2 o 3 2.00%, CaO 81.6%, MgO 0.6%, loss on ignition 0.7%, and the balance is unavoidable impurities, and the weight percentage of free calcium oxid...

Embodiment 3

[0022] In the present embodiment, the anti-cracking waterproofing agent adopts a mass ratio of calcium oxide clinker 36%, gypsum 20%, dickite 34%, fly ash 8%, wollastonite powder 2%, calcium oxide clinker, gypsum, ground The stone is ground to a certain fineness in the mill, and then mixed with fly ash and wollastonite powder. Or add 36% of calcium oxide clinker, 20% of gypsum, 34% of dickite, 8% of fly ash, and 2% of wollastonite powder into the mill for uniform grinding, and transport it to the homogenization warehouse for homogenization . Then obtain this anti-cracking waterproof agent. Other can refer to embodiment 1. The calcium oxide clinker in this embodiment is a single substance obtained by calcining limestone powder above 1500°C, and its weight ratio and its components are as follows: SiO 2 7.0%, Al 2 o 3 5.7%; Fe 2 o 3 2.4%, CaO 82%, MgO 1.1%, loss on ignition 0.8%, and the rest are unavoidable impurities, and the weight percentage of free calcium oxide in th...

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Abstract

The invention relates to the technical field of concrete additives, and particularly relates to an anti-crack water-proofing agent and a preparation method thereof. The anti-crack water-proofing agent is prepared from the following components in percentage by weight: 35%-40% of calcia clinkers, 15%-25% of gypsum, 30%-35% of dickite, 5%-10% of fly ashes and 2%-5% of wollastonite in powder. The preparation method of the anti-crack water-proofing agent comprises the following steps: grinding the calcia clinkers, the gypsum and the dickite into powder according to the weight percentage; doping the fly ashes and the wollastonite in powder; and mixing evenly. Compared with the prior art, according to the anti-crack water-proofing agent and the preparation method thereof provided by the invention, concrete can be effectively prevented from generating a crack, so as to improve the compactness, so that the waterproof property, impervious performance, erosion resistance and the like of the concrete are improved.

Description

[technical field] [0001] The invention relates to the technical field of concrete additives, in particular to an anti-crack and waterproof agent and a preparation method thereof. [Background technique] [0002] Concrete is the most widely used and most important basic material in construction engineering. It has achieved an irreplaceable position with its unique compressive strength, bonding strength, cast-in-place molding, water curing, firmness and durability. However, it also has very critical defects, such as: low tensile strength, small ultimate tensile strain, easy to form cracks during plastic shrinkage, resulting in insufficient anti-seepage ability, and directly hinders the strength index of the project in serious cases. Therefore, crack resistance and water seepage prevention are a long-term subject accompanying the application of concrete. [0003] The technical solution currently solved is to perform water reduction treatment according to the characteristics of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B22/14
Inventor 邱悦尚志策曹刚
Owner WEIFANG ASPECT BUILDING MATERIALS
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