Cement-based material surface permeation protective agent and preparation method thereof

A cement-based material and protective agent technology, which is applied in the field of building material protection, can solve the problems such as internal moisture cannot be discharged, achieve social and economic benefits, solve pulverization, and improve heat preservation effects

Inactive Publication Date: 2014-09-10
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing materials with protective effect on the surface of cement-based materials, such as coating protective materials and surface sealing protective materials, because of the thick coating route, it is common that th

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0039] Example 1

[0040] Weigh the components according to the following ratio: 40kg ethyl silicone oil, 25kg (3-glycidoxypropyl) methyl diethoxysilane, 25kg (3-glycidoxypropyl) triethoxy Base silane, 9kg ethanol, 1kg ethylenediamine.

[0041] Under the condition of 20℃, the composite silane is mixed uniformly according to the proportion to obtain the first component. Add the additives to the alcohol solvent to obtain component two. Slowly add component two to the polysiloxane to obtain component three. Then, at room temperature, slowly add component one to component three while mechanically stirring, and stir uniformly for 30 minutes before discharging.

[0042] Spray the penetration protection agent of this embodiment on 800 bulk density foam concrete (that is, the density of the foam concrete is 800 kg / m 3 )surface. It was determined that the water absorption rate in 24h was reduced by 15.3 times.

Example Embodiment

[0043] Example 2

[0044] Weigh the components according to the following proportions: 45kg methylchlorophenyl silicone oil, 20kg 3-aminopropyltriethoxysilane, 25kg 3-acryloxypropyltrimethoxysilane, 5kg n-butanol, 4kg isopropyl Alcohol, 1kg stannous octoate.

[0045] At room temperature, first mix the composite silane according to the ratio to obtain component one. Add the additives to the alcohol solvent to obtain component two. Slowly add component two to the polysiloxane to obtain component three. Then, at room temperature, slowly add component one to component three while stirring mechanically, stir well and discharge.

[0046] Spraying the penetration protection agent of this embodiment on the surface of fair-faced concrete bridge piers reduces the water absorption rate by 5.12 times in 24 hours.

Example Embodiment

[0047] Example 3

[0048] Weigh the components according to the following ratio: 45kg phenyl silicone oil, 15kg N-2 aminoethyl-3-aminopropyl methyldimethoxysilane, 30kg 3-ureidopropyltriethoxysilane, 9.6kg ethanol , 0.4kg hexamethylene diamine.

[0049] At room temperature, first mix the composite silane according to the ratio to obtain component one. Add the additives to the alcohol solvent to obtain component two. Slowly add component two to the polysiloxane to obtain component three. Then, at room temperature, slowly add component one to component three while stirring mechanically, stir well and discharge.

[0050] The penetration protection agent of this embodiment is sprayed on the surface of the cement mortar. After measurement, the ratio of 24h water absorption rate: 8.8%; 1h water absorption rate after heat treatment: 0.12%; 1h water absorption rate after low temperature treatment: 0.54%; 1h water absorption rate after UV treatment, 0.17%; 1h water absorption rate after a...

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Abstract

The invention discloses a cement-based material surface permeation protective agent and a preparation method thereof and aims at providing a cement-based material surface permeation protective agent which is completely different from the existing surface coating materials and surface hardeners and a preparation method of the protective agent. The cement-based material surface permeation protective agent comprises the following components in percentage by weight; 30%-60% of master batch, 30%-60% of composite silane, 1%-40% of organic solvent and 0%-10% of additives. The permeation protective agent is mainly used for improving the surface protective properties of the cement-based material and enhancing the durability of the cement-based material, and is capable of remarkably enhancing the harmful ion erosion resisting capacity of the cement-based material and also capable of improving the properties such as pollution resistance, salt rust resistance, wear resistance, heat preservation property and waterproof property; meanwhile, the permeation protective agent is capable of reducing the surface defects of the cement-based material such as surface powdering, dropping, frost crack and denudation; the permeation protective agent plays an important role in improving the safety of the cement-based material in the service life period, reducing the later-period maintenance and reinforcement costs and realizing long-term utilization of the cement-based material, and thus has extremely high application value and wide market application prospect.

Description

technical field [0001] The invention relates to the field of building material protection, in particular to a cement-based material surface penetration protectant and a preparation method thereof. Background technique [0002] Cement-based materials include cement concrete, cement mortar, foam concrete, aerated concrete, etc., which are not only the most important main structural materials in the fields of construction, civil engineering, water conservancy, transportation, etc., but also the most important materials in buildings, structures and related civil engineering. Advanced insulation, maintenance, plastering and masonry materials play an extremely important role in the national economy. [0003] With the current comprehensive development of my country's basic construction, problems such as structural maintenance and repair in the later period will become increasingly prominent. Therefore, effective protection of cement-based materials has important practical signific...

Claims

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Application Information

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IPC IPC(8): C04B41/49
Inventor 章岩
Owner SOUTHWEAT UNIV OF SCI & TECH
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