Building material with high bending resistance

Abstract

The invention discloses a building material with high bending resistance. The building material comprises the following materials, by weight, 30-65 parts of cement, 0.5-3.2 parts of calcium sulfonate, 11-21 parts of hydroxyethyl cellulose, 1-4 parts of modified ethylene bisstearamide, 0.25-0.8 part of maleic anhydride grafted polyethylene, 1-3 parts of bisphenol A type polycarbonate, 3-15 parts of active calcium, 12-29 parts of reinforcing fillers of powdered steatile and the like, 2-6 parts of 2-hydroxy-4-n-octyloxy diphenyl ketone and 3-10 parts of methyl cellulose. The beneficial effects of the building material with high toughness are that, fiber materials and dispersants are added, fiber materials can be uniformly dispersed by the dispersants, and therefore reinforcement and crack resistance effects of the fiber can be performed well, the prepared concrete product has strong toughness, the mechanical properties are improved, and the deformation resistance of interfaces is raised greatly. When disasters of earthquake and the like happen, the cracking rate and the breakage rate of the concrete are lowered.

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. 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 t...

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