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Foam concrete nano reinforcing agent

A nano-reinforcing agent and foam concrete technology, which is applied in the field of building materials, can solve problems such as low strength, slag falling, and thermal insulation performance decline, and achieve the effects of improving hydrophobic performance, increasing penetration depth, improving surface gloss and hydrophobic performance

Inactive Publication Date: 2016-03-02
ZIGONG INNOVATION CENT OF ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its high water absorption rate, it is easy to lead to an increase in thermal conductivity and a decrease in thermal insulation performance; when plastering mortar on the surface, it is prone to cracking, hollowing and other undesirable phenomena, so it is necessary to carry out hydrophobic treatment on foam concrete
In addition, the current strength of foamed concrete is low, especially those low-density concretes, which have serious slag drop during construction, and the structure will be sunken when it touches the structure.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of foam concrete nano reinforcing agent, is made up of the component of following percentage by weight: SiO 2 Sol 20% (20nm), Al 2 o 3 Sol 5% (40nm), 3-aminopropyltriethoxysilane 8.9%, polyethylene wax powder 1%, alkylphenol polyoxyethylene ether 0.1%, deionized water 65%.

[0025] The preparation method of foamed concrete nano reinforcement is:

[0026] (1) Weigh deionized water in a container according to the weight ratio, add alkylphenol polyoxyethylene ether and polyethylene wax powder, stir at room temperature for 10min, and the stirring speed is 2000rpm;

[0027] (2) Add SiO to the solution prepared in step (1) 2 Sol and Al 2 o 3 Sol, continue to stir at room temperature for 10min, stirring rate 800rpm;

[0028] (3) Add 3-aminopropyltriethoxysilane to the solution prepared in step (2), raise the temperature to 30° C., stir for 60 minutes at a stirring rate of 800 rpm, and then cool down to room temperature to obtain a foam concrete nano-reinforcing ag...

Embodiment 2

[0031] A kind of foam concrete nano reinforcing agent, is made up of the component of following percentage by weight: SiO 2 Sol 50% (40nm), Al 2 o 3 Sol 10% (20nm), γ-glycidyl etheroxypropyl trimethoxysilane 6.5%, polytetrafluoroethylene wax powder 3%, polyoxyethylene sorbitan monooleate 0.5%, deionized water 30%.

[0032] The preparation method of foamed concrete nano reinforcement is:

[0033] (1) Weigh deionized water in a container by weight, add polyoxyethylene sorbitan monooleate and polytetrafluoroethylene wax powder, stir at room temperature for 30 minutes, and the stirring rate is 1000 rpm;

[0034] (2) Add SiO to the solution prepared in step (1) 2 Sol and Al 2 o 3 Sol, continue to stir at room temperature for 30min, stirring rate 500rpm;

[0035] (3) Add gamma-glycidyl etheroxypropyl trimethoxysilane to the solution prepared in step (2), raise the temperature to 40°C, stir for 30min, and when the stirring rate is 500rpm, then cool down to room temperature to o...

Embodiment 3

[0038] A kind of foam concrete nano reinforcing agent, is made up of the component of following percentage by weight: SiO 2 Sol 30% (25nm), Al 2 o 3 Sol 8% (30nm), γ-glycidyl ether oxypropyl trimethoxysilane 5%, γ-(methacryloxy) propyl trimethoxysilane 5%, polytetrafluoroethylene wax powder 5%, poly Oxyethylene sorbitan monooleate 0.5%, deionized water 46.5%.

[0039] The preparation method of foamed concrete nano reinforcement is:

[0040] (1) Take deionized water in a container by weight ratio, add polyoxyethylene sorbitan monooleate and polytetrafluoroethylene wax powder, stir at room temperature for 20 minutes, and the stirring rate is 1500 rpm;

[0041] (2) Add SiO to the solution prepared in step (1) 2 Sol and Al 2 o 3 Sol, continue to stir at room temperature for 20min, stirring rate 600rpm;

[0042] (3) Add γ-glycidoxypropyltrimethoxysilane and γ-(methacryloyloxy)propyltrimethoxysilane to the solution prepared in step (2), raise the temperature to 50° C., and st...

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Abstract

The invention relates to the technical field of building materials, and aims at providing a foam concrete nano reinforcing agent. The foam concrete nano reinforcing agent is composed of the following components by the weight percentage: 20-50% of an SiO2 sol, 5-10% of an Al2O3 sol, 5-10% of a silane coupling agent, 1-5% of a wax powder, 0.1-0.5% of a surfactant, and 30-65% of deionized water. When in use, the product can be subjected to hydrolytic polycondensation to form network-like macromolecules, so as to make pores in concrete dense and enhance the hydrophobicity of the foam concrete; the foam concrete surface glossiness and hydrophobicity are improved; and the penetration depth of a sealant in the foam concrete is improved.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a foam concrete nano-reinforcing agent. Background technique [0002] Foam concrete has the advantages of light weight, heat insulation, fire prevention, convenient construction, good environmental protection, etc., and is widely used in projects such as building exterior wall insulation and fire protection belts. However, due to its high water absorption rate, it is easy to lead to an increase in thermal conductivity and a decrease in thermal insulation performance; when plastering mortar on the surface, it is prone to cracking, hollowing and other undesirable phenomena, so it is necessary to carry out hydrophobic treatment on foam concrete. In addition, the current strength of foamed concrete is low, especially those low-density concretes, which have serious slag drop during construction, and the structure will be sunken when it touches the structure. C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/42C04B24/00C04B22/04
Inventor 杨辉汪海风樊先平钱骁沈志成
Owner ZIGONG INNOVATION CENT OF ZHEJIANG UNIV
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