Coal gangue/kaolin ceramsite concrete hollow thermal insulation block and preparation method thereof

Abstract

The invention discloses a gangue / kaolin ceramsite concrete hollow insulation block and a preparation method thereof. The block is prepared from the following raw materials by weight: 100 to 120 parts of ordinary Portland cement grade 42.5, 500 to 550 parts of stone chippings, 25 to 35 parts of gangue, 10 to 15 parts of kaolin, 5 to 8 parts of paper pulp waste liquid, 2 to 3 parts of calcium sulfate whisker, 3 to 5 parts of carbon black, 20 to 25 parts of soluble glass, 8 to 12 parts of rice chaff powder, 4 to 5 parts of a foaming agent, 1 to 2 parts of foots, 2 to 3 parts of a polypropylene fiber, 0.5 to 1 part of a redispersible latex powder and 150 to 180 parts of water. The gangue / kaolin ceramsite concrete hollow insulation block produced in the invention has the advantages of high strength, low density, good heat insulation performance, good impact resistance, small possibility of water absorption, fire resistance, flame retardation, good weatherability, environment-friendliness, energy conservation and the like and has great market space and development prospects in the application field of building energy conservation in China.

Description

technical field [0001] The invention relates to a coal gangue / kaolin ceramsite concrete hollow thermal insulation block and a preparation method thereof, belonging to the field of building materials. Background technique [0002] Wall materials are an important part of building envelopes. With the promotion of building energy conservation and the continuous improvement of people's demand for living environment comfort, wall insulation materials have attracted more and more attention. At present, the widely used wall materials mainly include concrete blocks, aerated concrete blocks, and sintered porous bricks. When ordinary concrete hollow blocks are used for thermal insulation and energy-saving external walls, the thermal insulation and energy-saving effect is poor. In use, composite and efficient thermal insulation materials must be attached to the inner or outer surface of the wall, which is costly and difficult to construct; Due to its good thermal insulation performance...

AI Technical Summary

Problems solved by technology

When ordinary concrete hollow blocks are used for thermal insulation and energy-saving external walls, the thermal insulation and energy-saving effect is poor. In use, composite and efficient thermal insulation materials must be attached to the inner or outer surface of the wall, which is costly and difficult to construct; Due to its good thermal insulation performance, high refractoriness, and low density, the block is widely used in the inner partition wall of the frame structure, but its water absorption rate is relatively high, the strength is relatively low, and the wall is prone to cracking; sintering Porous bricks are bricks with holes on the large surface. The holes are many and small, which cannot meet the requirements of heat preservation and energy saving.

The obvious shortcomings and deficiencies of the above-mentioned wall materials cannot meet the requirements of thermal insulation or quality control. Therefore, it has become a top priority to develop new energy-saving wall thermal insulation materials as soon as possible