Building material with high flexural performance

Abstract

The invention discloses a building material with high flexural performance. The building material is prepared from the following raw materials in parts by weight: 30-65 parts of cement, 0.5-3.2 parts of calcium sulfonate, 0.25-0.8 parts of maleic anhydride grafted polyethylene glycol, 1-3 parts of bisphenol A polycarbonate, 15-28 parts of ceramsite, 15-30 parts of hemihydrate gypsum, 3-15 parts of activated calcium, 12-29 parts of reinforcing filler talcum powder, 2-6 parts of 2-hydroxy-4-n-octyloxy benzophenone and 3-10 parts of methyl cellulose. The fiber material and the dispersant are added in the building materials; the dispersant enables the fiber material to be uniformly dispersed, the reinforcement and crack-resistant effects of the fiber material are given a full play, the prepared concrete product has the advantages that the toughness is relatively strong, the mechanical properties are improved, the resistance deformation capability of the interface is significantly improved and when the earthquakes and other disasters occur, the probability of cracking and fracture of concrete are reduced.

Description

technical field [0001] The invention relates to a building material with high bending resistance. Background technique [0002] Building materials are the material basis of construction engineering, and various materials are needed in the construction of buildings from the main structure to decoration. Concrete is the most widely used building material. Its main components include cement, admixtures and aggregates. It is hardened after adding water and stirring. It has the advantages of simple process and fireproof performance. Low bending strength, small deformation capacity, and poor toughness. The low toughness of concrete may cause sudden catastrophic failure due to stress concentration at the variable cross-section position and steel / concrete hybrid structure nodes, especially under earthquake loads. Premature fracture of the protective layer often occurs in concrete structures, which leads to a significant reduction in the seismic performance of the structure. Conte...

AI Technical Summary

Problems solved by technology

Concrete is the most widely used building material. Its main components include cement, admixtures and aggregates. It is hardened after adding water and stirring. It has the advantages of simple process and fireproof performance. However, it is a brittle material with tensile and Low bending strength, small deformation capacity, and poor toughness. The low toughness of concrete may cause sudden catastrophic failure due to stress concentration at variable cross-section positions and steel / concrete hybrid structure nodes, especially under earthquake loads. Premature fracture of the protective layer often occurs in concrete structures, which leads to a significant reduction in the seismic performance of the structure