A kind of preparation method of water-based permeable concrete protective agent

A concrete and permeable technology, which is applied in the field of cement mortar and cement concrete waterproof protection materials, can solve the problems that do not involve the composition of aluminum potassium sulfate dodecahydrate, etc., and achieve the effect of improving impermeability, simple construction process and improving durability

Active Publication Date: 2014-10-08
ANHUI TRANSPORT CONSULTING & DESIGN INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the water-based osmotic crystalline waterproofing agent and its preparation method disclosed in the Chinese invention patent application publication specification CN101619203, the water-based osmotic crystalline waterproof material disclosed in the Chinese invention patent application publication specification CN101671154 and its preparation method, but the material composition and proportioning of the above patents are very different from the present invention, and the catalyst does not involve aluminum potassium sulfate dodecahydrate composition

Method used

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  • A kind of preparation method of water-based permeable concrete protective agent
  • A kind of preparation method of water-based permeable concrete protective agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Water-based permeable concrete protective agent is made of the following raw materials in mass percentage:

[0024] Potassium aluminum sulfate dodecahydrate 0.4%, sodium hydroxide 2%, citric acid (anhydrous citric acid) 0.015%, silane coupling agent isobutyltriethoxysilane 2%, sodium silicate aqueous solution (Baumé 40 ~42) 22%, deionized water (resistivity greater than or equal to 10 megohm·cm) 73.585%.

[0025] The specific preparation steps are as follows: under the condition of stirring at a rotating speed of 100r / min, add potassium aluminum sulfate dodecahydrate into deionized water, and stir for 10min; then add sodium hydroxide, and stir for 15min; at a rotating speed of 200r / min, Add citric acid and stir for 15 minutes; at a speed of 50 r / min, add sodium silicate aqueous solution and silane coupling agent in turn, and stir for 20 minutes to obtain a mixed solution; let stand for 2 hours to obtain a water-based penetrating concrete protective agent.

[0026] Conc...

Embodiment 2

[0028] Water-based permeable concrete protective agent, its components and mass percentages are:

[0029] Potassium aluminum sulfate dodecahydrate 0.4%, sodium hydroxide 2%, citric acid (anhydrous citric acid) 0.015%, silane coupling agent isobutyltriethoxysilane 2%, sodium silicate aqueous solution (Baumé 40 ~42) 22%, deionized water (resistivity greater than or equal to 10 megohm·cm) 73.585%.

[0030] The preparation method is the same as in Example 1.

[0031] Concrete specimen surface spraying dosage: 0.3kg / m 2 .

Embodiment 3

[0033] Water-based permeable concrete protective agent, its components and mass percentages are:

[0034] Potassium aluminum sulfate dodecahydrate 0.6%, sodium hydroxide 4%, citric acid (anhydrous citric acid) 0.025%, silane coupling agent isobutyltriethoxysilane 4%, sodium silicate aqueous solution (Baumé 40 ~42) 25%, deionized water (resistivity greater than or equal to 10 megohm·cm) 66.375%.

[0035] The preparation method is the same as in Example 1.

[0036] Concrete specimen surface spraying dosage: 0.2kg / m 2 .

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Abstract

The invention relates to a preparation method of a water-based permeable concrete protective agent, which is prepared from the following raw materials: potassium aluminum sulfate dodecahydrate, sodium hydroxide, citric acid, silane coupling agent, sodium silicate aqueous solution and deionized water. The specific preparation steps are as follows: add potassium aluminum sulfate dodecahydrate to deionized water, stir; then add sodium hydroxide, stir; then add citric acid, stir; then add sodium silicate aqueous solution, silane coupling agent in turn, stir , to obtain a mixed solution; standing still, to obtain a water-based penetrating concrete protective agent. The invention forms an integral protective layer by penetrating into the concrete and reacting with it, which can minimize the penetration of water and salts into the concrete, and help reduce freeze-thaw, carbonation, erosion, alkali-aggregate reaction, cracks and other damages and corrosion; the protective agent of the invention has good waterproof effect, simple construction process, long product storage period and wide application range.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a waterproof protection material for cement mortar and cement concrete. Background technique [0002] The structural durability of concrete has attracted great attention of construction personnel and scientific research personnel. Under the joint influence of external light, temperature, rain, salt, oil and other environments, concrete is prone to freeze-thaw, carbonization, erosion, alkali-aggregate reaction, cracks and other damages. Under the condition that the external environment cannot be avoided, we should start with improving the performance of concrete itself. After analysis, it is found that concrete, as a porous composite material, often has pores of different sizes after hardening. As far as the deterioration process is concerned, the expansion and cracking of concrete are related to water. At the same time, water is also the carrier of aggressive media (...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B41/50
Inventor 陈修和余建军翟红侠廖绍锋张玉斌陈为成王春红张辉杨航卓建平
Owner ANHUI TRANSPORT CONSULTING & DESIGN INST
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