Silicon dioxide aerogel mortar and preparation method thereof

A silica and aerogel technology, used in the field of mortar preparation, can solve the problems of low flexural strength and bonding strength, material brittleness, non-load cracks, etc., to increase frost resistance and impermeability, The effect of improving the durability of mortar bonding and improving the tensile strength

Active Publication Date: 2017-05-24
XINHUASHENG ENERGY SAVING TECH CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

There are many kinds of mortar, and its performance is also continuously improved with the development of modern building materials. The tensile strength, flexural strength and bonding strength of ordinary cement mortar are not high, poor toughness, and easy to crack. With the development of society The strength requirements for cement and cement substrates are getting higher and higher. Adding calcium silicate to cement can improve the strength of cement mortar, but it also brings some new problems, such as the brittleness of materials and the heat of hydration. , The problem of non-load cracks. In response to the above problems, people began to continuously study adding various substances to cement mortar to enhance its toughness and cohesiveness. Although various efforts have been made, the performance of cement mortar still cannot Meet the requirements of the project

Method used

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  • Silicon dioxide aerogel mortar and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: A kind of silica airgel mortar of the present embodiment includes the following components according to the weight fraction ratio: 100 parts of cement, 300 parts of sand, 0.2 part of defoamer, silica airgel microspheres 10 parts, 25 parts of ethyl acrylate emulsion, 0.02 parts of polymer powder, 5 parts of water, 15 parts of mineral micropowder, 0.2 parts of water reducer;

[0021] The polymer powder includes methyl cellulose and dispersible rubber powder, and the weight ratio of methyl cellulose and dispersible rubber powder is 2:1.

[0022] The mineral fine powder includes mineral powder, limestone powder and fly ash, and the weight ratio range of mineral powder, limestone powder and fly ash is 1:1.2:1.5;

[0023] The sand has a modulus of fineness of 2.3.

[0024] The fineness of the cement is less than or equal to 2.5% with a sieve residue of 80 μm.

[0025] A preparation method for silica airgel mortar, comprising the following steps:

[0026] Step...

Embodiment 2

[0030] Embodiment 2: A kind of silica airgel mortar of the present embodiment comprises the following components according to weight fraction ratio: 100 parts of cement, 300 parts of sand, 0.2 part of defoamer, silica airgel microspheres 15 parts, 30 parts of ethyl acrylate emulsion, 0.5 parts of polymer powder, 6 parts of water, 20 parts of mineral micropowder, 0.4 parts of water reducing agent;

[0031] The polymer powder includes methyl cellulose and dispersible rubber powder, and the weight ratio of methyl cellulose and dispersible rubber powder is 2:1.

[0032] The mineral fine powder includes mineral powder, limestone powder and fly ash, and the weight ratio range of mineral powder, limestone powder and fly ash is 1:1.2:1.5;

[0033] The sand has a modulus of fineness of 2.3.

[0034] The fineness of the cement is less than or equal to 2.5% with a sieve residue of 80 μm.

[0035] A preparation method for silica airgel mortar, comprising the following steps:

[0036] S...

Embodiment 3

[0040] Embodiment three: a kind of silica airgel mortar of the present embodiment comprises the following components according to the weight fraction ratio: 100 parts of cement, 300 parts of sand, 0.2 part of defoamer, silica airgel microspheres 20 parts, 40 parts of ethyl acrylate emulsion, 0.1 part of polymer powder, 7 parts of water, 30 parts of mineral micropowder, 0.8 part of water reducer;

[0041] The polymer powder includes methyl cellulose and dispersible rubber powder, and the weight ratio of methyl cellulose and dispersible rubber powder is 2:1.

[0042] The mineral fine powder includes mineral powder, limestone powder and fly ash, and the weight ratio range of mineral powder, limestone powder and fly ash is 1:1.2:1.5;

[0043] The fineness modulus of the sand ranges from 2.2 to 2.6.

[0044] The fineness of the cement is less than or equal to 2.5% with a sieve residue of 80 μm.

[0045] A preparation method for silica airgel mortar, comprising the following steps...

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Abstract

The invention provides a silicon dioxide aerogel mortar and a preparation method thereof, belongs to the technical field of mortar preparation, and mainly relates to mortar and a preparation method thereof, which aim at solving the problem of failure to meet current actual requirements of mortar property in the prior art. The silicon dioxide aerogel mortar is prepared from the following components in parts by weight: 100 parts of cement, 300 parts of sand, 0.08 to 0.5 part of defoaming agent, 10 to 20 parts of silicon dioxide aerogel microsphere, 25 to 40 parts of ethyl acrylate emulsion, 0.02 to 0.1 part of polymer powder, and 5 to 7 parts of water. The silicon dioxide aerogel mortar has the advantages that the sticking property of whole cement mortar is improved, the tension strength, rapture strength and sticking durability are greatly improved, the dry shrinkage is decreased, the cracking is reduced, and the anti-freezing property and anti-seepage property are improved.

Description

technical field [0001] A mortar and a preparation method thereof belong to the technical field of mortar preparation, and mainly relate to a silica airgel mortar and a preparation method thereof. Background technique [0002] Mortar is an important building material in construction engineering, widely used in building masonry and plastering projects. There are many kinds of mortar, and its performance is also continuously improved with the development of modern building materials. The tensile strength, flexural strength and bonding strength of ordinary cement mortar are not high, poor toughness, and easy to crack. With the development of society The strength requirements for cement and cement substrates are getting higher and higher. Adding calcium silicate to cement can improve the strength of cement mortar, but it also brings some new problems, such as the brittleness of materials and the heat of hydration. , The problem of non-load cracks. In response to the above proble...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
CPCC04B28/00C04B2111/20C04B2111/27C04B2201/10C04B2201/50C04B7/00C04B14/06C04B2103/50C04B14/064C04B24/045C04B24/383C04B2103/408C04B22/002C04B14/28C04B18/08C04B2103/302
Inventor 朱晓辉李坚良
Owner XINHUASHENG ENERGY SAVING TECH CO LTD
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