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Foam concrete for civil engineering

A technology of foam concrete and civil engineering, applied in the field of concrete materials, can solve the problems of low strength of foam concrete, limit the wide-scale promotion of foam concrete, and fail to meet the requirements of building structures, so as to improve impermeability, hinder water migration, The effect of increasing strength

Inactive Publication Date: 2019-05-21
EASTERN GANSU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Foamed concrete is a method of physical and mechanical foaming. The foam made of foaming agent is added to cement slurry or cement mortar. After uniform mixing, it is poured into various specifications. After curing, it forms a lightweight concrete with a large number of closed pores. It has Light weight, good thermal insulation performance, good sound insulation and fire resistance, good seismic performance, environmental protection and other characteristics have been widely used at present. However, the existing foam concrete generally has the defect of low strength, which cannot meet the use requirements of building structures. Widespread promotion of foam concrete

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of foam concrete for civil engineering, prepared from the raw materials of the following components:

[0021] 50 parts of ordinary Portland cement, 20 parts of aggregate, 0.8 parts of foaming agent, 0.5 parts of fiber expansion agent, 1.3 parts of highly active fluorotitanium, 8 parts of fly ash, 3 parts of graphene oxide, and 3 parts of acrylate emulsion , 0.1 part of sodium diethylenetriaminepentacarboxylate, 1.5 parts of calcium carbonate whiskers, 1.5 parts of cast stone powder, 4 parts of ethylene-acrylic acid emulsion (EAA emulsion), 0.01 part of hydroxypropyl methylcellulose, cooked sulfoaluminate 0.3 parts of raw materials, 0.3 parts of triethanolamine, 0.5 parts of polyetherimine, 0.7 parts of water reducing agent, and 20 parts of water.

Embodiment 2

[0023] A kind of foam concrete for civil engineering, prepared from the raw materials of the following components:

[0024] 70 parts of ordinary Portland cement, 30 parts of aggregate, 1.6 parts of foaming agent, 1 part of fiber expansion agent, 5 parts of highly active fluorotitanium, 15 parts of fly ash, 8 parts of graphene oxide, 7.2 parts of acrylate emulsion , 0.32 parts of sodium diethylene triamine pentacarboxylate, 2.5 parts of calcium carbonate whiskers, 2.3 parts of cast stone powder, 5.8 parts of ethylene-acrylic acid emulsion (EAA emulsion), 0.03 parts of hydroxypropyl methylcellulose, cooked sulfoaluminate 1.3 parts of raw materials, 0.5 parts of triethanolamine, 0.7 parts of polyetherimine, 1.3 parts of water reducing agent, and 30 parts of water.

Embodiment 3

[0026] A kind of foam concrete for civil engineering, prepared from the raw materials of the following components:

[0027] 60 parts of ordinary Portland cement, 25 parts of aggregate, 1.2 parts of foaming agent, 0.75 parts of fiber expansion agent, 3.15 parts of highly active fluorotitanium, 11.5 parts of fly ash, 5.5 parts of graphene oxide, 5.1 parts of acrylate emulsion , 0.21 parts of sodium diethylene triamine pentacarboxylate, 2 parts of calcium carbonate whiskers, 1.9 parts of cast stone powder, 4.9 parts of ethylene-acrylic acid emulsion (EAA emulsion), 0.02 parts of hydroxypropyl methylcellulose, cooked sulfoaluminate 0.8 parts of material, 0.4 parts of triethanolamine, 0.6 parts of polyetherimine, 1 part of water reducer, and 25 parts of water.

[0028] According to the standard method of Example 1, Example 2, and Example 3, a cube specimen of 100mm×100mm×100mm was made, and after curing for 28 days at a temperature of 20±3°C and a relative humidity of 90%, refer to...

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PUM

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Abstract

The invention discloses foam concrete for civil engineering. The foam concrete is prepared from, 50-70 parts of ordinary Portland cement, 20-30 parts of aggregate, 0.8-1.6 parts of a foaming agent, 0.5-1 part of a fiber expanding agent, 1.3-5 parts of high-activity titanium fluoride, 8-15 parts of fly ash, 3-8 parts of graphene oxide, 3-7.2 parts of an acrylate emulsion, 0.1-0.32 part of diethylenetriamine sodium penta-carboxylic ester, 1.5-2.5 parts of calcium carbonate whiskers, 1.5-2.3 parts of cast stone powder, 4-5.8 parts of an ethylene-acrylic emulsion, 0.01-0.03 part of hydroxypropyl methyl cellulose, 0.3-1.3 parts of sulphoaluminate clinker, 0.3-0.5 part of triethanolamine, 0.5-0.7 part of polyether imine, 0.7-1.3 parts of a water reducing agent and 20-30 parts of water. The obtained foam concrete has excellent compression resistance and crack resistance.

Description

technical field [0001] The invention relates to the field of concrete materials, in particular to foam concrete for civil engineering. Background technique [0002] Foamed concrete is a method of physical and mechanical foaming. The foam made of foaming agent is added to cement slurry or cement mortar. After uniform mixing, it is poured into various specifications. After curing, it forms a lightweight concrete with a large number of closed pores. It has Light weight, good thermal insulation performance, sound insulation and fire resistance, good seismic performance, environmental protection and other characteristics have been widely used at present. However, the existing foam concrete generally has the defect of low strength, which cannot meet the use requirements of building structures. Widespread promotion of foam concrete. Contents of the invention [0003] In order to solve the above problems, the present invention provides a foam concrete for civil engineering. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B38/10
Inventor 李飞杨宏平杨阳
Owner EASTERN GANSU UNIVERSITY
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