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Al2O3 sol type wear-resisting concrete sealing hardening agent and preparation method thereof

A technology of concrete and hardener, applied in the field of building materials, can solve the problems of inconvenient transportation and storage, troublesome construction, etc., and achieve the effects of improving surface gloss and hydrophobicity, increasing penetration depth, and improving hydrophobicity

Active Publication Date: 2016-03-23
HANGZHOU GELING NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention comprehensively utilizes the dual effects of lithium-based salt hardener and organic resin hardener to achieve its dense hardening effect, but its construction is troublesome, and because it involves two components, it is very inconvenient in transportation and storage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A concrete seal hardener (Al 2 o 3 Sol-type wear-resistant concrete seal hardener), formula: Al 2 o 3 Sol (particle size 20nm, pH value 3.0, solid content 35%) 40%, tetraethyl orthosilicate 2%, bis-(triethoxysilylpropyl) amine 3%, polyethylene wax powder 1%, Alkylphenol polyoxyethylene ether 0.2%, deionized water 40%, ethanol 13.8%.

[0026] The preparation method is:

[0027] (1) Take deionized water and ethanol in a container by weight ratio, add alkylphenol polyoxyethylene ether and wax powder as a surfactant, stir at room temperature for 10min, and stir at a rate of 1000rpm;

[0028] (2) Add Al to the solution prepared in step (1) 2 o 3 Sol, continue to stir at room temperature for 10min, stirring rate 500rpm;

[0029] (3) Add orthosilicate ethyl ester of silane coupling agent and bis-(triethoxysilylpropyl)amine to the solution prepared in step (2), heat up to 30°C, stir for 30min, stir When the speed is 500rpm, it is then lowered to room temperature to obta...

Embodiment 2

[0032] A concrete seal hardener, formula: Al 2 o 3Sol (particle size 10nm, pH 3.5, solid content 40%) 35%, bis-(triethoxysilylpropyl)amine 3%, 1,2-bis(trimethoxysilyl)ethane 5 %, polytetrafluoroethylene wax powder 2%, alkylphenol polyoxyethylene ether 0.3%, deionized water 45%, ethanol 9.7%.

[0033] The preparation method is equivalent to Example 1.

[0034] The prepared concrete sealing hardener is directly sprayed on the concrete surface, and the dosage is 0.20g / m2 2 , and test the performance after 5 days of curing. The sealing hardener penetrates into the concrete to a depth of 4mm; the wear resistance is 45% higher than that of the untreated concrete; the hydrophobicity is 80% higher than that of the untreated concrete; the gloss is 80% higher than that of the untreated concrete.

Embodiment 3

[0036] A concrete seal hardener, formula: Al 2 O 3 Sol (particle size 40nm, pH 4.5, solid content 50%) 30%, bis-(trimethoxysilylpropyl)amine 2%, bis-(triethoxysilylpropyl)amine 2% , 1,2-bis(trimethoxysilyl)ethane 6%, polytetrafluoroethylene wax powder 5%, alkylphenol polyoxyethylene ether 0.5%, deionized water 45%, ethanol 9.5%.

[0037] The preparation method is equivalent to Example 1.

[0038] The prepared concrete sealing hardener is directly sprayed on the concrete surface, and the dosage is 0.30g / m2 2 , and test the performance after 5 days of curing. The sealing hardener penetrates into the concrete to a depth of 5mm; the wear resistance is 70% higher than that of the untreated concrete; the hydrophobicity is 80% higher than that of the untreated concrete; the gloss is 100% higher than that of the untreated concrete.

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Abstract

The invention discloses an Al2O3 sol type wear-resisting concrete sealing hardening agent. The Al2O3 sol type wear-resisting concrete sealing hardening agent is prepared from, by mass, 30-60% of Al2O3 sol, 5-10% of a silane coupling agent, 1-5% of wax powder, 0.1-0.5% of a surface active agent, 5-15% of ethyl alcohol and the balance deionized water. The grain size of the Al2O3 sol is 10-40 nm, the pH value is 3-5, and the solid content is 20-50%; the silane coupling agent is tetraethoxysilane, 3-amino propyl triethoxy silane, gamma-glyxidyl ether oxygen propyl trimethoxy silane, gamma-(methylacryloyl chloride)propyl trimethoxy silane, bi-triethoxyl silicyl propyl)amine, bi-(triethoxy silicyl propyl)amine, 1,2-bi(triethoxyl silane)ethane and the like. The invention further discloses a preparation method of the Al2O3 sol type wear-resisting concrete sealing hardening agent.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a concrete sealing hardener and a preparation method thereof. Background technique [0002] As a widely used building material, concrete plays a huge role in modern construction projects. However, the poor wear resistance of ordinary concrete as a floor and pavement material affects its application. There are three main methods to improve the wear resistance of concrete. The first type is to lay a wear-resistant layer on the concrete surface. The wear-resistant layer is ceramic tile, stone or wear-resistant floor. The second category is coating epoxy resin, polyurea resin and other coatings on the concrete surface. Although the wear resistance has been improved to a certain extent, the coating will not improve the strength of the concrete, and the organic coating The membrane completely blocks the pores on the surface of the concrete, causing the internal water vap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/42C04B103/14
CPCC04B40/0039C04B2103/14C04B22/06C04B24/42C04B24/2611C04B2103/402C04B24/02C04B2103/406C04B24/2682
Inventor 杨辉吴春春汪海风阙永生吴旭日林伟峰
Owner HANGZHOU GELING NEW MATERIAL TECH
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