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Composite thermal insulation mortar and manufacturing method thereof

A technology of composite thermal insulation mortar and cement, which is applied in the field of building materials, can solve problems such as poor thermal insulation performance of thermal insulation mortar, and achieve the effects of improving energy saving, crack resistance, and promoting utilization

Inactive Publication Date: 2014-09-10
SICHUAN INSITITUTE OF BUILDING RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a composite thermal insulation mortar and its preparation method, to solve the problem of poor thermal insulation performance of the existing thermal insulation mortar, and to realize the recycling of crop straws

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A composite thermal insulation mortar, which is composed of the following raw materials in parts by weight: 72 parts of cement, 13 parts of fly ash, 15 parts of calcium hydroxide, 10 parts of rice straw fiber, 40 parts of vitrified microbeads, 0.6 part of cellulose ether, 0.14 parts of starch ether, 0.04 parts of air-entraining agent, 2 parts of latex powder, and 150 parts of water. The preparation method is as follows:

[0023] (1) Dry mix the cement, fly ash, calcium hydroxide, cellulose ether, starch ether, air-entraining agent and latex powder in the above weight parts to a uniform state to obtain a dry powder;

[0024] (2) Mixing the rice straw fiber and vitrified microspheres in the above parts by weight to a uniform state to obtain a mixture;

[0025] (3) Add the above weight part of water into the mixer, then add the dry powder into the mixer and stir for 50-100 seconds, finally add the mixture into the mixer, and then mechanically stir for 1.5-3 minutes to obt...

Embodiment 2

[0028] A composite thermal insulation mortar, which is composed of the following raw materials in parts by weight: 78 parts of cement, 10 parts of fly ash, 12 parts of calcium hydroxide, 15 parts of rice straw fiber, 35 parts of vitrified microbeads, 0.5 part of cellulose ether, 0.14 parts of starch ether, 0.04 parts of air-entraining agent, 3 parts of latex powder, and 172 parts of water. The preparation method is as follows:

[0029] (1) Dry mix the cement, fly ash, calcium hydroxide, cellulose ether, starch ether, air-entraining agent and latex powder in the above weight parts to a uniform state to obtain a dry powder;

[0030] (2) Mixing the rice straw fiber and vitrified microspheres in the above parts by weight to a uniform state to obtain a mixture;

[0031] (3) Add the above weight part of water into the mixer, then add the dry powder into the mixer and stir for 60 seconds, finally add the mixture into the mixer, and then mechanically stir for 2 minutes to obtain the ...

Embodiment 3

[0034] A composite thermal insulation mortar, which is composed of the following raw materials in parts by weight: 71 parts of cement, 13 parts of fly ash, 16 parts of calcium hydroxide, 20 parts of rice straw fiber, 30 parts of vitrified microbeads, 0.7 part of cellulose ether, 0.10 parts of starch ether, 0.05 parts of air-entraining agent, 3 parts of latex powder, and 182 parts of water. The preparation method is the same as in Example 2.

[0035] The dry bulk density of the thermal insulation mortar of the present embodiment is 359kg / m 3 , the compressive strength is 0.43MPa, the heat conduction system is 0.078W / (m·K), the bonding strength is 0.03MPa, the softening system is 0.55, the water absorption rate is 53% in 48h, and the linear shrinkage rate in 28d is 0.10%.

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Abstract

The invention discloses composite thermal insulation mortar which solves the problem that the thermal insulation property of existing thermal insulation mortar is not good and achieves recycling of crop straws. The composite thermal insulation mortar is composed of, by weight, 70-80 parts of cement, 10-15 parts of coal ash, 5-20 parts of calcium hydroxide, 10-20 parts of rice straw fibers, 30-40 parts of glass beads, 0.5-0.8 part of cellulose ether, 0.1-0.2 part of starch ether, 0.01-0.05 part of air entraining agents, 1-4 parts of emulsion powder and 150-190 parts of water, wherein the cement, the coal ash and the calcium hydroxide account for 100 parts. According to the composite thermal insulation mortar, the crop straws are fully utilized and recycled; meanwhile, the rice straw fibers of agricultural waste and the coal ash of industrial waste can be utilized, and the composite thermal insulation mortar is environmentally friendly, low in energy consumption and capable of being widely applied to thermal insulation of internal walls and external walls of buildings.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a composite thermal insulation mortar and a preparation method thereof. Background technique [0002] In my country's current social and economic structure, building energy consumption has reached 27.6% of the total energy consumption of the whole society. With the improvement of people's living standards, heating and cooling energy consumption continues to increase, and building energy consumption accounts for 27.6% of the total energy consumption. The proportion will continue to increase, and the contribution of building energy conservation to energy conservation is of great significance. The focus of building energy conservation in my country is: energy saving of building envelope, energy saving of building heating system, improvement of efficiency of lamps and other electrical appliances, energy saving of newly built large public buildings, and energy sa...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B18/24
CPCY02W30/91
Inventor 薛伶俐黎红兵梁爽刘延年徐杰
Owner SICHUAN INSITITUTE OF BUILDING RES
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