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Concrete hardening waterproof agent and preparation method and application method thereof

A technology of concrete and waterproofing agent, applied in the direction of coating, wax coating, etc., can solve the problems of not being able to compensate for concrete shrinkage cracks, unfavorable strength of concrete in the later stage, and influence of waterproof and impermeable performance, etc., to achieve simple use method, improve strength and waterproof performance , the effect of simple preparation method

Inactive Publication Date: 2017-10-17
上海西亚化工工贸有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silicone waterproofing agent is a water-soluble polymer with a small molecular weight, which is easily decomposed by weak acid to form a water-insoluble methyl silicon ether waterproof film with waterproof performance. The waterproof film is surrounded by the constituent particles of concrete and has a hydrophobic Water performance; because the volume of concrete will shrink due to cold shrinkage or dry shrinkage during the pouring hardening process, the main disadvantage of silicone waterproofing agents is that they cannot compensate for the shrinkage cracks of concrete, so the shrinkage cracks of concrete will make it waterproof and resistant Permeability is greatly affected
Inorganic aluminum salt waterproofing agent is made of aluminum salt and calcium carbonate as the main raw material, supplemented by various inorganic salts. It has the characteristics of impermeability, frost resistance, heat resistance, early strength and quick setting, etc., but the early The strong quick-setting effect makes the formation of early hydrate structure faster, and the structure is less dense. The faster the early strength of concrete increases, the lower the later strength. There are adverse effects, and the impermeability is also poor

Method used

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  • Concrete hardening waterproof agent and preparation method and application method thereof
  • Concrete hardening waterproof agent and preparation method and application method thereof
  • Concrete hardening waterproof agent and preparation method and application method thereof

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preparation example Construction

[0020] Preferably, the raw material components of the concrete hardening and waterproofing agent also include: 15-20 parts by weight of triisopropanolamine, 6-8 parts by weight of sodium metabisulfite, 0.5-1 part by weight of potassium chloride, hydrophilic fumed silica 4-6 parts by weight, 9-11 parts by weight of calcium lignosulfonate and 10-12 parts by weight of acrylated epoxy resin; wherein, the preparation method of acrylated epoxy resin comprises the following steps: epoxy resin E44, Mix the polymerization inhibitor hydroquinone and the catalyst benzylamine evenly, raise the temperature to 100-108°C, then add acrylic acid dropwise, keep it warm for 60-80 minutes, raise the temperature to 148-152°C, keep it warm until the acid value test result is less than 0.4mg / g , to obtain acrylated epoxy resin; the mass ratio of epoxy resin, acrylic acid, polymerization inhibitor and catalyst is (840~860):(80~90):(4~6):1.

[0021] In addition, the present invention also provides a p...

Embodiment 1

[0026] This embodiment provides a concrete hardening and waterproofing agent, the raw material components are by weight, including:

[0027] 90 parts by weight of No. 52 chlorinated paraffin, 5 parts by weight of ammoniacal liquor with a mass fraction of 25%, 8 parts by weight of stearic acid, 11 parts by weight of magnesium fluorosilicate, 1 part by weight of defoamer (n-amyl alcohol), preservative ( sodium benzoate) 0.6 parts by weight and 180 parts by weight of water.

[0028] According to above-mentioned raw material, adopt the preparation method of concrete hardening waterproofing agent provided by the invention, prepare concrete hardening waterproofing agent:

[0029] S1: Mix all raw material components evenly, adjust the pH value to 5.5, and then heat at 80°C for 15 minutes;

[0030] S2: adjust the pH value of the product obtained in S1 to 7.5, then heat at 95° C. for 10 minutes, and then cool to room temperature to obtain a concrete hardening and waterproofing agent. ...

Embodiment 2

[0032] This embodiment provides a concrete hardening and waterproofing agent, the raw material components are by weight, including:

[0033] 110 parts by weight of No. 52 chlorinated paraffin, 4 parts by weight of ammoniacal liquor with a mass fraction of 25%, 9 parts by weight of stearic acid, 9 parts by weight of magnesium fluorosilicate, 3 parts by weight of defoamer (n-amyl alcohol), preservative ( sodium benzoate) 0.4 parts by weight and 220 parts by weight of water.

[0034] According to above-mentioned raw material, adopt the preparation method of concrete hardening waterproofing agent provided by the invention, prepare concrete hardening waterproofing agent:

[0035] S1: Mix all raw material components evenly, adjust the pH value to 6.0, and then heat at 90°C for 20 minutes;

[0036] S2: adjust the pH value of the product obtained in S1 to 8.0, then heat at 105° C. for 15 minutes, and then cool to room temperature to obtain a concrete hardening and waterproofing agent. ...

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Abstract

The invention relates to a concrete hardening waterproof agent and a preparation method and application method thereof; the concrete hardening waterproof agent is made from, by weight, 90-100 parts of paraffin, 4-5 parts of ammonia water, 8-9 parts of stearic acid, 9-11 parts of magnesium fluorosilicate, 1-3 parts of a defoaming agent, 0.4-0.6 part of a preservative, and 180-220 parts of water. The concrete hardening waterproof agent provided herein can provide improved strength and waterproof performance for concrete, can seal small pores of concrete to provide greatly improved sealing performance, and can replace waterproof coiled material and bring reduced engineering manufacture cost and improved engineering quality; the preparation method is simple, good in safety, nontoxic, and green.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a concrete hardening waterproofing agent and a preparation method and application method thereof. Background technique [0002] Concrete waterproofing agent should have the function of improving the impermeability and waterproofing of concrete, and at the same time have the effects of retarding, early strength, water reduction, and crack resistance, and can improve the workability of fresh mortar. It can replace lime paste and is suitable for the roof of one-story houses. Concrete, large-volume waterproof concrete, hydraulic concrete, waterproof mortar, etc. There are two main types of existing concrete waterproofing agents: organosilicon-based waterproofing agents and inorganic aluminum salt-based waterproofing agents. Silicone waterproofing agent is a water-soluble polymer with a small molecular weight, which is easily decomposed by weak acid to form a water-insolub...

Claims

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Application Information

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IPC IPC(8): C09D191/06C09D7/12C04B41/50
CPCC09D191/06C04B41/5024C08L2205/03C04B41/478C04B41/472C04B41/46C04B41/463C04B41/4539C08L63/10C08L97/005C08K13/02C08K5/09C08K3/34C08K5/05C08K3/30C08K5/17C08K3/36
Inventor 徐忠良
Owner 上海西亚化工工贸有限公司
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