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Sulfoaluminate cement foam concrete taking carbon dioxide as foaming gas and preparation method thereof

A technology of sulphoaluminate cement and foam concrete, which is applied in the field of building materials, can solve the problems of poor thermal insulation and thermal insulation performance, and achieve the effects of good thermal insulation performance, improved thermal insulation, and low thermal conductivity

Inactive Publication Date: 2017-08-25
CHONGQING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by the present invention is: to provide a sulphoaluminate cement foam concrete with carbon dioxide as the foaming gas, which solves the problem of poor thermal insulation and heat insulation performance of the existing foam concrete. technical problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A sulphoaluminate cement foam concrete with CO2 as the foaming gas, consisting of the following components by mass: 150 parts of sulphoaluminate cement, 45 parts of fly ash, 15 parts of silica fume, and 8 parts of sodium bicarbonate , 5 parts of aluminum sulfate, 0.5 parts of calcium stearate, 0.5 parts of lauryl alcohol, and 150 parts of water.

[0027] Prepare sulphoaluminate cement foam concrete according to the following method, weigh sulphoaluminate cement, mineral admixture and foam stabilizer according to the above-mentioned parts by mass and mix them uniformly to obtain a mixture, and then add them to the mixture in parts by mass Add water and carry out a stirring, the time of the first stirring is 2min, and the rotation speed of the first stirring is 1200r / min; then continue to add the foaming agent according to the above mass parts and carry out the second stirring, the time of the second stirring is 15s, and the second stirring The rotation speed is 2500r / min...

Embodiment 2

[0029] A sulphoaluminate cement foam concrete with CO2 as the foaming gas, consisting of the following components in parts by mass: 180 parts of sulphoaluminate cement, 60 parts of fly ash, 20 parts of silica fume, and 6 parts of potassium bicarbonate , 4 parts of aluminum chloride, 1 part of calcium stearate, 0.5 parts of lauryl alcohol, and 160 parts of water.

[0030] Prepare sulphoaluminate cement foam concrete according to the following method, weigh sulphoaluminate cement, mineral admixture and foam stabilizer according to the above-mentioned parts by mass and mix them uniformly to obtain a mixture, and then add them to the mixture in parts by mass Add water and carry out a stirring, the time of the first stirring is 2.5min, and the rotation speed of the first stirring is 1300r / min; then continue to add the foaming agent according to the above mass parts and carry out the second stirring, the time of the second stirring is 16s, and the second stirring The rotating speed ...

Embodiment 3

[0032] A sulphoaluminate cement foam concrete with CO2 as the foaming gas, consisting of the following components by mass: 310 parts of sulphoaluminate cement, 90 parts of fly ash, 25 parts of bentonite, 18 parts of sodium carbonate, nitric acid 12 parts of aluminum, 3 parts of magnesium stearate, 1 part of lauryl alcohol, 250 parts of water.

[0033]Prepare sulphoaluminate cement foam concrete according to the following method, weigh sulphoaluminate cement, mineral admixture and foam stabilizer according to the above-mentioned parts by mass and mix them uniformly to obtain a mixture, and then add them to the mixture in parts by mass Add water and carry out a stirring, the time of the first stirring is 2min, and the rotation speed of the first stirring is 1400r / min; then continue to add the foaming agent according to the above mass parts and carry out the second stirring, the time of the second stirring is 17s, and the second stirring The rotation speed is 2700r / min; finally p...

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Abstract

The invention discloses sulfoaluminate cement foam concrete taking carbon dioxide as foaming gas and a preparation method thereof. The foaming gas in the sulfoaluminate cement foam concrete is carbon dioxide; the foam concrete is prepared from the following components in parts by mass: 150 to 310 parts of sulfoaluminate cement, 60 to 120 parts of mineral admixture, 10 to 30 parts of carbon dioxide foaming agent, 1 to 4 parts of foam stabilizing agent and 150 to 250 parts of water. The carbon dioxide is taken as the foaming gas in the sulfoaluminate cement foam concrete, so that the prepared sulfoaluminate cement foam concrete has higher heat-preserving performance and heat-insulating performance, the fire resistance rating is up to a level A, and the strength of the foam concrete can be enhanced.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a sulphoaluminate cement foam concrete with carbon dioxide as foaming gas and a preparation method thereof. Background technique [0002] Foam concrete is a lightweight, high-strength, heat-retaining concrete made of cementitious materials, appropriate mineral admixtures, suitable admixtures, foaming agents and foam stabilizers in a certain proportion and through a certain preparation process. Foamed concrete is a new type of energy-saving and environment-friendly building material, which has good heat preservation and heat insulation properties, and its fire resistance rating is Class A. [0003] The existing foam concretes are mainly ordinary Portland cement foam concrete and sulphoaluminate cement foam concrete, but the gases introduced by sulphoaluminate cement foam concrete are usually oxygen and air. At 0°C, the thermal conductivity of air is 0.0242w / (m·k), and the therma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B28/06
CPCC04B28/06C04B2111/28C04B2111/40C04B2201/20C04B2201/32C04B2201/50C04B18/08C04B18/146C04B22/10C04B22/148C04B24/04C04B24/02C04B38/02C04B38/0067C04B22/12C04B14/104C04B22/085
Inventor 王智李天刘川陈瑞王和祥王艳茹贾兴文熊凤鸣
Owner CHONGQING UNIV
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