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Compound waterproofing agent for concrete and preparation method thereof

A technology for waterproofing agent and concrete, applied in the field of concrete waterproofing agent, can solve the problems of unsatisfactory waterproofing performance of waterproofing agent, water droplets entering the interior of buildings, loss of protection significance, etc., and achieves low production cost, good permeability, and improved waterproofness. Effect

Inactive Publication Date: 2017-05-10
四会市恒星智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, once the waterproof membrane is damaged, or if it is exposed to the outdoors for a long time and falls off or cracks, the external water droplets will enter the interior of the building and lose its protective meaning.
Penetrating waterproofing agent is to apply hydrophobic material on the surface of the substrate, which can penetrate into the interior of the substrate instead of blocking the pores. After treating the substrate with it, it can prevent liquid water from entering and allow water vapor to enter and exit freely, ensuring The waterproof and air-permeable performance of the surface of the substrate is improved, which is commonly referred to as "breathing", but the waterproof performance of the existing waterproofing agent is not ideal, so it is urgent to develop a concrete waterproof with good waterproof performance, durability and self-healing performance. agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of composite waterproofing agent for concrete, is made up of component A and component B, and its preparation method comprises the following steps:

[0020] (1) Heat 100 parts of water to 80°C, add 15 parts of polyvinyl alcohol, 50 parts of acrylic modified silicone resin and 3 parts of silane coupling agent in sequence, start the agitator, stir for 5-10 minutes, keep warm for 2-3 hours, Add 3 parts of alkylsulfonate and 0.8 parts of ethanolamine and stir for 3-5 minutes, finally add 0.3 parts of defoamer, 0.28 parts of disodium hydrogen phosphate, 6 parts of plasticizer, and stir well to obtain component A;

[0021] (2) Add 20 parts of silicate and 10 parts of potassium hydroxide to 60 parts of water, stir for 10-20 minutes, add 10 parts of aluminum sulfate, 60 parts of slag, 15 parts of kaolin, 3 parts of sodium nitrite, and stir evenly. Component B is obtained.

[0022] When in use, compound components A and B at a weight ratio of 3:1 and add them to the conc...

Embodiment 2

[0024] A kind of composite waterproofing agent for concrete, is made up of component A and component B, and its preparation method comprises the following steps:

[0025] (1) Heat 100 parts of water to 60°C, add 5 parts of polyvinyl alcohol, 53 parts of epoxy-modified silicone resin and 2 parts of silane coupling agent in sequence, start the agitator, stir for 5-10 minutes, and keep warm for 2-3 hours , add 2 parts of alkyl sulfonate and 0.2 part of ethanolamine and stir for 3 to 5 minutes, finally add 0.2 part of defoamer, 0.05 part of sodium gluconate, and 5 parts of plasticizer, and stir well to obtain component A;

[0026] (2) Add 15 parts of silicate and 7.5 parts of potassium hydroxide to 60 parts of water, stir for 10-20 minutes, add 15 parts of aluminum sulfate, 80 parts of slag, 12 parts of kaolin, 5 parts of sodium nitrite, and stir evenly. Component B is obtained.

[0027] When in use, compound components A and B at a weight ratio of 3:1 and add them to the concret...

Embodiment 3

[0029] A kind of composite waterproofing agent for concrete, is made up of component A and component B, and its preparation method comprises the following steps:

[0030] (1) Heat 80 parts of water to 80°C, add 20 parts of polyvinyl alcohol, 30 parts of polyurethane modified epoxy resin, 20 parts of polyurethane modified epoxy resin and 0.5 part of silane coupling agent in sequence, start the agitator, and stir 5-10 minutes, keep warm for 2-3 hours, add 0.5 parts of ethanolamine and stir for 3-5 minutes, finally add 0.5 parts of defoamer, 0.5 parts of aluminum tripolyphosphate, 2 parts of plasticizer, and stir well to obtain component A;

[0031] (2) Add 5 parts of silicate and 5 parts of potassium hydroxide to 80 parts of water, stir for 10-20 minutes, add 5 parts of aluminum sulfate, 65 parts of slag, 10 parts of kaolin, 3 parts of sodium nitrite, and stir evenly. Component B is obtained.

[0032] When in use, compound component A and component B at a weight ratio of 4:1 an...

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Abstract

The invention discloses a compound waterproofing agent for concrete and a preparation method thereof, and relates to the technical field of concrete waterproofing agents. The compound waterproofing agent for the concrete consists of a component A and a component B, wherein the component A consists of polyvinyl alcohol, a silane coupling agent, modified silicon resin, alkyl sulfonate, ethanolamine, an antifoaming agent, a retarder, a plasticizer and water; the component B consists of silicate, aluminum sulfate, slag, kaolin, potassium hydroxide, sodium nitrate and water. The waterproofing agent can be compounded to fully develop the effects of each component, has high hydrophobicity, weather resistance and permeability and strong bonding strength, and is extensive in material, low in production cost and particularly suitable for industrial large scale production, and the preparation method is simple.

Description

technical field [0001] The invention relates to the technical field of concrete waterproofing agent, in particular to a composite waterproofing agent for concrete and a preparation method thereof. Background technique [0002] Concrete is a multi-phase composite brittle material, its tensile strength is relatively low (about 1 / 20-1 / 10 of the compressive strength), and the ultimate tensile strain is relatively small (only 0.02%-0.03%). When it is in the process of hydration and hardening, due to drying shrinkage, chemical shrinkage, carbonation shrinkage and other reasons, the internal tensile stress caused by volume shrinkage and deformation is greater than its own tensile strength, cracking will occur in concrete, which can not only destroy its The impermeability of the structure will also affect its durability, the stability of steel bars and the safety of the building. In addition, concrete is also a heterogeneous material. From the perspective of macrostructure, concret...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/42C04B103/65
CPCC04B40/0039C04B2103/65C04B24/2623C04B24/42C04B24/16C04B24/122C04B2103/50C04B22/16C04B22/08C04B22/062C04B22/148C04B18/141C04B14/106
Inventor 丘焕山
Owner 四会市恒星智能科技有限公司
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