Anti-cracking gypsum-based light material

Abstract

The invention relates to an anti-cracking gypsum-based light material. The anti-cracking gypsum-based light material comprises, by mass, 100 parts of building gypsum, 75 to 95 parts of water, 45 to 65parts of glass beads, 0.3 to 0.6 part of polyvinyl alcohol fibers, 8 to 15 parts of rubber particles, 0.2 to 0.6 part of a silane coupling agent, 0.2 to 0.6 part of an adhesive, 0.2 to 0.6 part of awater retaining agent, 0.2 to 0.6 part of a water reducing agent and 0.2 to 0.6 part of a retarder. The rubber particles with different particle sizes, the glass beads, the gypsum cementing material and the like are filled step by step according to a certain mass ratio, and besides grading optimization among multiple phases, in-phase particle grading optimization is further increased to improve the compatibility among the multiple phases in a matching manner. The gypsum-based light material which is low in dry density, excellent in deformation damage resistance and good in heat preservation and heat insulation performance is obtained by further combining the interaction of other auxiliary components.

Description

technical field [0001] The invention belongs to the technical field of building thermal insulation materials, and relates to a crack-resistant gypsum-based lightweight material. Background technique [0002] With the improvement of people's living standards, housing construction continues to increase. In 2018, the per capita housing construction area of ​​urban residents was 39 square meters, an increase of 32.3 square meters over 1978; the per capita housing construction area of ​​rural residents was 47.3 square meters, an increase of 39.2 square meters over 1978 rice. People's requirements for building comfort are getting higher and higher. In winter, the room temperature increases from 16°C and 18°C ​​to 20°C or even 25°C; in summer, the room temperature decreases from 32°C to 28°C, or even 24°C. The heating area has also greatly expanded to the south, and many buildings in the south have also installed floor heating uniformly. Therefore, building energy consumption has...

AI Technical Summary

Problems solved by technology

However, there are problems such as agglomeration and poor dispersion of fibers at large dosages, resulting in more weak areas at the fiber-gypsum interface, weakening the bridging effect of fibers, and the effect of toughening and crack resistance is relatively general

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