Green energy-saving composite thermal-insulation building block, and preparation method thereof

Abstract

The invention discloses a green energy-saving composite thermal-insulation building block, and a preparation method thereof. The green energy-saving composite thermal-insulation building block comprises a building block main body; the building block main body is provided with a thermal insulation chamber; and the internal part of the thermal insulation chamber is provided with a thermal insulationlayer prepared of foamed concrete. The raw materials of the building block main body comprise 350 to 450 parts of cement, 120 to 200 parts of fly ash, 40 to 60 parts of slag micropowder, 850 to 1000parts of coarse aggregate, 650 to 750 parts of fine aggregate, 120 to 150 parts of water, and 8 to 12 parts of a water reducing agent. 15 to 20 parts of basalt fiber, 15 to 20 parts of cellulose grafted chitosan, and 3 to 5 parts of silicon carbide; the raw materials of the foamed concrete comprise 195 to 220 parts of cement, 130 to 155 parts of slag micropowder, 160 to 195 parts of fly ash, 5 to8 parts of an associative polyurethane thickener, 10 to 15 parts of polyvinyl alcohol, 12 to 17 parts of lauryl polyoxyethylene ether, 5 to 10 parts of sodium carboxymethyl cellulose, 110 to 130 partsof water, 5 to 10 parts of basalt fiber, and 2.5 to 5 parts of aluminum powder. The green energy-saving composite thermal-insulation building block possesses both excellent thermal insulation performance and high compressive strength.

Description

technical field [0001] The invention relates to the technical field of green building materials, in particular to a green energy-saving composite thermal insulation block and a preparation method thereof. Background technique [0002] With the strengthening of energy saving and environmental protection awareness, building energy saving has become an important aspect of implementing energy saving and emission reduction measures. As an important part of building structure, the thermal insulation performance of walls is directly related to the energy saving effect of buildings. As an important part of energy-saving wall materials, composite thermal insulation blocks occupy an important position in energy-saving buildings. The 2016 edition of the "Key Products and Services Guidance Catalog for Strategic Emerging Industries" also included composite thermal insulation blocks under the name of green building materials in energy-saving and environmental protection industries and hig...

AI Technical Summary

Problems solved by technology

[0004] However, although the above-mentioned thermal insulation bricks have a good thermal insulation effect, their compressive strength is relatively poor, which greatly limits their development in the energy-saving building materials industry.