Composite-based self-heat-insulation building block and preparation method thereof

Abstract

The invention relates to a composite-based self-heat-insulation building block. The composite-based self-heat-insulation building block comprises the following components in parts by weight: 240 to 500 parts of semi-hydrated gypsum, 80 to 200 parts of silicate cement, 160 to 300 parts of coal ash, 8 to 16 parts of a high-efficiency water reducing agent SM, and 0.5 to 1.6 parts of foaming agent. The composite-base self-heat-insulation building block is prepared by adding the high-efficiency water reducing agent SM and the foaming agent into 800 to 880 parts of water to obtain a mixture; adding the semi-hydrated gypsum, the silicate cement and the coal ash into the mixture; stirring the mixture, casting and molding to harden the mixture; drying or naturally curing to obtain the composite-based self-heat-insulation building block. The prepared composite-based self-heat-insulation building block has light weight, high compressive strength, a good heat insulation effect, high water resistance and a high softening coefficient, and is an excellent material for an energy-saving wall body of a building.

Description

technical field

[0001] The invention relates to a composite base self-insulation block and a preparation method thereof. Background technique

[0002] At present, among the wall materials in our country, traditional wall materials still occupy a dominant position, and there are problems such as backward industrial structure, high production energy consumption, and environmental pollution. In recent years, although some thermal insulation blocks have appeared, the thermal insulation performance is not ideal, and according to the characteristics of building materials, while providing thermal insulation performance of materials, the performance and indicators of materials in terms of light weight, strength and convenient construction cannot be reduced. , because wall insulation and its strength, lightness and other properties are often contradictory, this poses a greater challenge to the development of wall insulation materials. Contents of the invention

[0003] The object ...

Examples

Embodiment 1

[0021] Prepare composite base self-insulation block of the present invention according to the following steps:

[0022] Add 800kg of water into the mixing tank, add 8kg of SM, 1kg of sodium lauryl sulfate, 10kg of commercially available XF antifreeze, and then add 500kg of hemihydrate gypsum, 80kg of ordinary Portland cement and 160kg of fly ash. , high-speed stirring, stirring speed 400-800rpm. The stirring time is 20-30s, and then poured into the mold for molding. Release the mold after about 6-8 minutes of molding hardening. The demoulded blocks are pushed into a low-temperature drying room (at a temperature of about 60-80°C) and dried for 15 hours before being sent to the yard. The blocks after demoulding can also be cured naturally, and the curing time is about 7 days.

[0023] The indicators of the prepared block are: dry bulk density 800kg / m3, compressive strength 12.6Mpa, thermal conductivity 0.09w / ㎡·℃, frost resistance cycle > 30, fire resistance grade A, softening...

technical field

[0001] The invention relates to a composite base self-insulation block and a preparation method thereof. Background technique

[0002] At present, among the wall materials in our country, traditional wall materials still occupy a dominant position, and there are problems such as backward industrial structure, high production energy consumption, and environmental pollution. In recent years, although some thermal insulation blocks have appeared, the thermal insulation performance is not ideal, and according to the characteristics of building materials, while providing thermal insulation performance of materials, the performance and indicators of materials in terms of light weight, strength and convenient construction cannot be reduced. , because wall insulation and its strength, lightness and other properties are often contradictory, this poses a greater challenge to the development of wall insulation materials. Contents of the invention

[0003] The object ...

Examples

Embodiment 1

[0021] Prepare composite base self-insulation block of the present invention according to the following steps:

[0022] Add 800kg of water into the mixing tank, add 8kg of SM, 1kg of sodium lauryl sulfate, 10kg of commercially available XF antifreeze, and then add 500kg of hemihydrate gypsum, 80kg of ordinary Portland cement and 160kg of fly ash. , high-speed stirring, stirring speed 400-800rpm. The stirring time is 20-30s, and then poured into the mold for molding. Release the mold after about 6-8 minutes of molding hardening. The demoulded blocks are pushed into a low-temperature drying room (at a temperature of about 60-80°C) and dried for 15 hours before being sent to the yard. The blocks after demoulding can also be cured naturally, and the curing time is about 7 days.

[0023] The indicators of the prepared block are: dry bulk density 800kg / m3, compressive strength 12.6Mpa, thermal conductivity 0.09w / ㎡·℃, frost resistance cycle > 30, fire resistance grade A, softening...

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