Low-alkalinity composite cracking-against waterproof agent

An anti-crack waterproofing agent and composite technology, applied in the field of cement admixtures, can solve the problems of decreased bonding strength, inapplicability in places with special requirements for strength and anti-seepage, and insignificant compensation of plastic shrinkage, so as to improve waterproof performance. , Plastic shrinkage reduction, shrinkage reduction effect

Active Publication Date: 2010-04-14
陈智丰
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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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0021] Examples Gypsum Fly Ash Aluminum Sulfate Organic Water Repellent Shrinkage Reducing Agent Plastic Expansion Agent Used in CSA Expansion Agent

[0022] Calcium sulfoaluminate cement clinker

[0023] 1 70 25 1.8 3.0 0.1 0.05 0.05

[0024] 2 65 32 0 2.0 0..4 0,4 ​​0.2

[0025] 3 60 35 3.35 1.0 0.3 0.2 0.15

[0026] 4 55 40 3.8 0.5 0.5 0.1 0.1

[0027] 5 50 45 3.0 1.5 0.2 50.1 0.15

[0028] 6 45 50 3.1 0.1 1.5 0.2 0.1

[0029] 7 40 50 7.65 0 2.0 0.25 0.1

[0030] 8 35 40 22.2 2.5 0.1 0.1 0.1

[0031] 9 30 60 6.6 .0 0.0 50.2 0.15

[0032] 10 25 40 32 2 0.4 0.5 0.1

[0033] Prepare the clinker of CSA expansion kiln according to the technology and formula provided by ZL02116312.X literature,

[0034] Proportioning is carried out according to the examples given above, uniformly mixed, ground and sieved to obtain the product of the present invention. The product designed and produced according to the present invention is named "CSA anti-crack and waterproof a...

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PUM

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Abstract

The invention discloses a low pH value composite anticracking water proofer, which comprises the following steps: allocating the mass percent of raw material as 25-70% CSA swelling agent clinker, 25-60% plaster, 1. 8-32% coal ash, 0. 1-3. 0% aluminum sulfate, 0. 1-2. 0% organic water proofer, 0. 05-0. 5% reduction agent and 0. 05-0. 5% plastic dilatability; getting the product. This invention possesses distinctive compensate function for shrinkage of concrete, which can make the further improve anticlastic and impervious function for concrete.

Description

technical field [0001] The invention relates to a cement admixture, which is used in construction engineering as a concrete modification material. Specifically, it is a low-alkalinity composite anti-cracking and waterproofing agent. 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 a very critical flaw. For example: the tensile strength is low, the ultimate tensile strain is small, and it is easy to form cracks during plastic shrinkage, resulting in insufficient anti-seepage ability, which directly hinders the strength index of the project in severe cases. Therefore, crack resistance and water seepage prevention are a long-term subject accompanying the application of concrete. The technical solution currently solved is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B22/14C04B18/08C04B24/08C04B24/02C04B22/04
CPCC04B40/0039Y02W30/91C04B7/323C04B18/08C04B22/143C04B22/148C04B28/02C04B2103/30C04B2103/58C04B2103/65C04B22/008C04B22/04C04B24/02C04B24/08C04B24/42C04B38/02C04B24/085C04B24/16
Inventor 陈智丰张振秋
Owner 陈智丰
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