High-strength straw brick and preparation method thereof

Abstract

The invention discloses a high-strength straw brick and a preparation method thereof, and relates to the technical field of straw construction materials. The high-strength straw brick is prepared fromthe following raw materials in parts by weight: 60-80 parts of modified straw, 20-30 parts of cement, 7-15 parts of modified urea formaldehyde resin, 7-15 parts of stone powder, 2-5 parts of ceramsite, 0.05-0.5 part of ammonium chloride and 0.5-2 parts of polyphenylene sulfide powder. The preparation method of the high-strength straw brick comprises the following steps: mixing and uniformly stirring the modified straw, the stone powder, the ceramsite, the polyphenylene sulfide powder and the cement; adding a right amount of water and performing uniform stirring; adding the modified urea formaldehyde resin and performing uniform stirring; adding the ammonium chloride and performing uniform stirring to obtain mixture; and paving the mixture into a mold, and performing press forming, condensation curing, solidification demolding and airing to obtain the high-strength straw brick. The brick prepared by adopting heat-insulated straw as a substrate bonded with the cement and the modified urea formaldehyde resin has high compactness, good strength and water resistance and good heat insulation performance, anti-seismic performance, sound insulation performance, anti-cracking performance and the like, and can replace a common brick to serve as a construction material, thereby reducing the construction energy consumption.

Description

technical field [0001] The invention relates to the technical field of straw building materials, in particular to a high-strength straw brick and a preparation method thereof. Background technique [0002] my country's total building energy consumption (including building material production and building energy consumption) is huge, accounting for about 30% of the country's energy consumption, of which building material production energy consumption accounts for more than 12% of the country's total energy consumption, so promote the innovation and promotion of wall materials Energy-efficient buildings are effective measures to save energy. As a large agricultural country, our country is rich in straw resources, and the building materials processed by straw have a broad application space. On the one hand, it can solve the problem of environmental pollution caused by a large amount of straw burning; on the other hand, it has found a new way out for crop straw, which can turn wa...

AI Technical Summary

Problems solved by technology

[0003] Due to the complex and irregular shape of the straw, the gaps between the straws are large, and the surface of the straw contains substances that are not conducive to gluing, it is difficult to obtain a satisfactory gluing strength.

Plant fiber cement-based materials are not widely used in today's construction industry because the interface between natural plant fibers and cement matrix is ​​poorly bonded, and the interface layer between plant fibers and cement matrix is ​​loose or leaves gaps, resulting in The comprehensive mechanical strength of the material is low