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Concrete waterproof agent

A technology of concrete waterproofing agent and sodium methyl silicate, which is applied in the field of concrete waterproofing agent, can solve the problems of poor adhesion between waterproofing agent and foundation surface, time-consuming and laborious surface treatment, long maintenance time, etc., and achieve good waterproof effect and enhanced Good original strength and self-healing effect

Inactive Publication Date: 2018-06-22
常德市万福达环保节能建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The waterproofing agent has poor adhesion to the surface of the foundation, and the surface needs to be treated to expose fresh concrete, and the surface treatment is time-consuming and laborious; the purpose of waterproofing is achieved by crystal growth, and the growth of crystals takes a certain time, and the waterproof effect appears. Slower, requires longer maintenance time

Method used

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  • Concrete waterproof agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A concrete waterproofing agent, comprising the following components in mass percentage: 50% sodium methyl silicate-calcium hydroxide composite solution, 30% sodium silicate solution, 3% sodium citrate, 2% triethanolamine, hydroxyl Propyl methyl cellulose 2%, tackifier 80A5 10.6%, pectin 3%, JX anti-crack silicon water repellent 5%, aluminum sulfide 1%, tert-butyldiphenylchlorosilane 0.4%, rosin base Hyperbranched epoxy resin 3%. Wherein the viscosity of hydroxypropyl methylcellulose is 120000-180000mPa·s, the solid content of the sodium silicate solution is 40%, and the modulus of the sodium silicate solution is 2.2-3.2.

[0038] The preparation method of the sodium methyl silicate-calcium hydroxide composite solution is as follows: Weigh 80% of the sodium methyl silicate solution with a solid content of 10% and 20% of the calcium hydroxide, stir in the reaction kettle until there is no agglomeration, Let it stand for 1 day, and take the supernatant liquid.

[0039] P...

Embodiment 2

[0041] A concrete waterproofing agent, comprising the following components in mass percentage: 60% sodium methyl silicate-calcium hydroxide composite solution, 20% sodium silicate solution, 1% sodium citrate, 3% triethanolamine, hydroxyl Propyl methyl cellulose 5%, tackifier 80A5 10.3%, pectin 2.5%, JX anti-crack silicon water repellent 5%, aluminum sulfide 2%, tert-butyldiphenylchlorosilane 0.2%, rosin base Hyperbranched epoxy resin 1%. Wherein the viscosity of hydroxypropyl methylcellulose is 160000mPa·s, the solid content of the sodium silicate solution is 50%, and the modulus of the sodium silicate solution is 2.2-3.2.

[0042] The preparation method of sodium methyl silicate-calcium hydroxide composite solution is as follows: Weigh 90% of sodium methyl silicate solution and 10% of calcium hydroxide with a solid content of 10%, stir in the reaction kettle until there is no agglomeration, Let it stand for 1 day, and take the supernatant liquid.

[0043] Preparation method...

Embodiment 3

[0045] A concrete waterproofing agent, comprising the following components in mass percentage: 55% sodium methyl silicate-calcium hydroxide composite solution, 25% sodium silicate solution, 3% sodium citrate, 3% triethanolamine, hydroxyl Propyl methyl cellulose 3%, tackifier 80A5 10.5%, pectin 2%, JX anti-crack silicon water repellent 5%, aluminum sulfide 1%, tert-butyldiphenylchlorosilane 0.5%, rosin base Hyperbranched epoxy resin 2%. Wherein the viscosity of hydroxypropyl methylcellulose is 180000mPa·s, the solid content of the sodium silicate solution is 45%, and the modulus of the sodium silicate solution is 2.2-3.2.

[0046] The preparation method of sodium methyl silicate-calcium hydroxide composite solution is as follows: Weigh 85% of sodium methyl silicate solution and 15% of calcium hydroxide with a solid content of 10%, stir in the reaction kettle until there is no agglomeration, Let it stand for 1 day, and take the supernatant liquid.

[0047] Preparation method: ...

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Abstract

The invention discloses a concrete waterproof agent. The concrete waterproof agent is prepared from, by mass, 50%-60% of a methanesiliconic acid sodium salt-calcium hydroxide complex solution, 20%-30%of a sodium silicate solution, 1%-3% of sodium citrate, 2%-3% of triethanolamine, 2%-5% of hydroxypropyl methyl cellulose, 0.3%-0.6% of thickening agent 80A51, 2%-3% of pectin, 5% of JX anti-crack siliceous waterproof agent, 1%-2% of aluminum sulfide, 0.2%-0.5% of tert-Butyldiphenylsilane and 1%-3% of rosinyl hyperbranched epoxy resin. According to the concrete waterproof agent, aluminum sulfide,tert-Butyldiphenylsilane, rosinyl hyperbranched epoxy resin, sodium silicate and the methanesiliconic acid sodium salt-calcium hydroxide complex solution are mixed with other raw materials, a cross-linked network structure is formed through the rosinyl hyperbranched epoxy resin at the early stage and can proof water, enough time is left for crystal growth, and the problems that the waterproof effect is slow, and long-time maintenance is required are solved.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a concrete waterproofing agent. Background technique [0002] Waterproofing is an important measure, even a fundamental measure, to improve the durability of cement concrete structures. The waterproof performance of cement concrete structure basically determines its durability. Water is an important substance that causes durability damage to cement concrete structures and reinforced concrete structures. Whether it is soft water erosion of cement concrete, freeze-thaw damage, alkali-aggregate reaction, steel bar corrosion and sulfate corrosion, etc., or steel bar oxidation corrosion in cement concrete, or even the dissolution of hydraulic and port structures, it is inseparable from the role of water. , without the participation of water, most of the erosion will hardly occur. For cement concrete with a water-cement ratio of 0.5-0.7, after hydration, its p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/42C04B103/65
CPCC04B40/0039C04B2103/65C04B24/42C04B22/064C04B12/04C04B24/06C04B24/122C04B24/383C04B24/38C04B22/14C04B24/34C04B22/00C04B24/2652
Inventor 金华金彤金靓
Owner 常德市万福达环保节能建材有限公司
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