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A non-shrinkage, self-curing, anti-corrosion grouting agent

A self-curing and anti-corrosion technology, applied in the field of concrete admixtures, can solve problems such as poor applicability, complex composition, and failure to consider the maintenance function of grouting agent, so as to improve tensile resistance and avoid cracking

Active Publication Date: 2018-09-25
JIANGXI PINGXIANG CITY LIANYOU BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, Chinese patent CN201610342760X discloses an autogenous crystalline anti-seepage and moisture-proof mortar, including the following raw materials in parts by weight: 30-50 parts of quartz sand, 10-20 parts of 52.5 Portland cement, 30-35 parts of sulphoaluminate cement, high 3-5 parts of active osmotic crystalline masterbatch, 5-15 parts of nano-calcium carbonate, 0.2-0.8 parts of water reducer, 1-3 parts of renewable dispersed latex powder, 0.1-0.4 parts of cellulose ether, 0.02-0.05 parts of defoamer part, 0.1-0.15 part of polypropylene fiber, 0.05-0.2 part of zinc stearate, play the role of keeping the mortar surface dry and repairing the moldy wall of the finish, but its composition is relatively complicated; Chinese patents CN2014102570673, CN2012102582366, CN2015103620180, CN2015103624374 discloses related content of grouting agent for tunnels, its main scope of application is grouting for tunnels, poor applicability for conventional building walls, and the components are relatively complicated, and the post-maintenance function of grouting agent is not considered

Method used

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  • A non-shrinkage, self-curing, anti-corrosion grouting agent
  • A non-shrinkage, self-curing, anti-corrosion grouting agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The invention provides a grouting agent with non-shrinkage, self-maintenance and anti-corrosion function, which comprises the following components in weight percentage: A. cement mixture 40%, B. fine aggregate 53%, C. polyacrylamide fiber 5% , D. Polycarboxylate superplasticizer 0.5%, E. Internal curing agent 1.5%.

[0024] The proportion (weight ratio) of the cement mixture is P.Ⅱ52.5 cement: rapid hardening cement = 1.3:1; the length of the polyacrylamide fiber is 30mm; the internal curing agent is composed of the following components in weight percentage : 25% of water glass, 6% of water-absorbing resin powder, 5% of hydrochloric acid, and 64% of water. The preparation method adopted is as follows:

[0025] (1) get the raw material of the formula quantity of above-mentioned internal curing agent;

[0026] (2) Grind the water-absorbent resin powder and mix it with water, gradually raise the temperature to 85-90°C, and keep stirring for 40-60 minutes;

[0027] (3) Ad...

Embodiment 2

[0031] The invention provides a non-shrinkage, self-curing, anti-corrosion grouting agent, which includes the following components in weight percentage:

[0032] A. Cement mixture 43%, B. Fine aggregate 50%, C polyacrylamide fiber 4%, D. Polycarboxylate superplasticizer 1%, E. Internal curing agent 2%. The cement mixture ratio (weight ratio) is P.Ⅱ52.5 cement: rapid hardening cement = 2:1; the length of the polyacrylamide fiber is 60mm; the internal curing agent is composed of the following components in weight percentage 15% of water glass, 7% of water-absorbing resin powder, 10% of hydrochloric acid, and 68% of water. The preparation method adopted is the same as in Example 1; the water-absorbing resin powder is spherical or nearly spherical, and the particle size is 1 μm. Make the water-absorbent resin more evenly distributed in the grouting agent.

Embodiment 3

[0034] The invention provides a non-shrinkage, self-curing, anti-corrosion grouting agent, which includes the following components in weight percentage:

[0035] A. Cement mixture 45%, B. Fine aggregate 50%, C. Polyacrylamide fiber 2%, D. Polycarboxylate superplasticizer 1%, E. Internal curing agent 2%. The proportion (weight ratio) of the cement mixture is P.Ⅱ52.5 cement: rapid hardening cement = 2.5:1; the length of the polyacrylamide fiber is 45mm; the internal curing agent is composed of the following components in weight percentage 20% of water glass, 10% of water-absorbing resin powder, 8% of hydrochloric acid, and 62% of water. The preparation method adopted is the same as in Example 1; the water-absorbing resin powder is spherical or nearly spherical, and the particle diameter is 5 μm. Make the water-absorbent resin more evenly distributed in the grouting agent.

[0036] According to "General Concrete Long-Term Performance and Durability Test Method Standard (GB / T 500...

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Abstract

The invention discloses a shrinkage-free, self-maintaining and anti-corrosive mud jacking agent. The mud jacking agent is prepared from, by weight percent, A, 40-45% of cement mixture; B, 50-55% of fine aggregate; C, 2-5% of polyacrylamide fiber; D, 0.5-1% of polycarboxylate superplasticizer; E, 1-2% of inner curing agent; the inner curing agent consists of 15-25% of sodium silicate, 1-10% of water-absorbent resin powder, 5-10% of hydrochloric acid and 55-79% of water. On the basis of guaranteeing that the mud jacking agent has early-strength, no shrinkage, the anti-stretching, anti-compressive, anti-seepage and waterproof, anti-corrosive performances of the mud jacking agent are further improved.

Description

technical field [0001] The invention relates to a concrete admixture, in particular to a grouting agent with non-shrinkage, self-maintenance and anti-corrosion functions, and also relates to a preparation method of the aforementioned grouting agent. Background technique [0002] In recent years, with the continuous increase of the amount of engineering construction, the amount of concrete has continued to rise, and the requirements for concrete strength, construction difficulty and durability have also continued to increase. Therefore, research on improving the performance of concrete has continued to develop. For example, Chinese patent CN201610342760X discloses an autogenous crystalline anti-seepage and moisture-proof mortar, including the following raw materials in parts by weight: 30-50 parts of quartz sand, 10-20 parts of 52.5 Portland cement, 30-35 parts of sulphoaluminate cement, high 3-5 parts of active osmotic crystalline masterbatch, 5-15 parts of nano-calcium carb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B111/20C04B111/34
CPCC04B28/04C04B2111/00293C04B2111/2015C04B2111/343C04B14/02C04B16/0616C04B22/08C04B24/24C04B22/122C04B2103/302
Inventor 吴剑东谢玉肖艳飞喻超王芳周友斌裴顺文
Owner JIANGXI PINGXIANG CITY LIANYOU BUILDING MATERIAL