Environment-friendly high-strength straw cement brick and preparation method thereof

Abstract

The invention discloses an environment-friendly high-strength straw cement brick and a preparation method thereof. The method comprises the following steps of: burning straws to obtain plant ash, mixing the plant ash with water to form a plant ash solution, soaking corn straws in the plant ash solution, and separating; airing the corn straws, soaking the corn straws in oil, taking out the corn straws, and airing; heating the plant ash solution to evaporate moisture to obtain powder A; cutting the corn straws into sections with two lengths, and placing the sections in a mold of a hot press in acrossed manner; crushing grain crop straws, uniformly mixing and stirring the crushed grain crop straws, the powder A and a flame-retardant adhesive, and conveying the obtained mixture into a mold for compression molding to prepare a straw bricklaying blank; wrapping the corn straw board with linen soaked with raw lacquer, and maintaining to obtain the environment-friendly high-strength straw cement brick. The production raw materials are crop wastes, the production is energy-saving and environment-friendly, the production process is easy to control, the production cost is low, the product has excellent thermal insulation and fireproof properties, straw mildew and worm damage can be prevented, and cracking of the straw cement brick is effectively avoided.

Description

technical field [0001] The invention specifically relates to an environment-friendly high-strength straw cement bricklaying and a preparation method thereof. Background technique [0002] Crop straw is the largest by-product of agricultural production in the world, and it is also an important biological resource that can be comprehensively utilized. With the development of agricultural production and rural energy, there is a large amount of surplus straw, and the problem of disposal of the remaining straw has become increasingly prominent. Straw has excellent building performance. In the history of human architecture, plant fibers such as straw have been used as building materials. It has excellent properties of light weight, heat preservation, heat insulation, sound absorption, toughness and energy saving. Studies have shown that straw brick walls have the best thermal insulation performance. The thermal conductivity of straw is only 3% of the thermal conductivity of con...

AI Technical Summary

Problems solved by technology

However, the straw contains pectin, ash and other substances. If the cellulose is not extracted, it is difficult for the adhesive to enter the pores of the straw, resulting in poor performance of straw products and no good market.

At present, the cellulose in it is decomposed, and it is generally treated with phenol and sodium hydroxide. Large-scale production will face the problem of processing a large amount of sewage. Not only will the cost increase significantly, but there are also problems in the current treatment technology.

At the same time, the danger of expansion and cracking of straw building materials in the humid environment may occur in the later stage. In addition, the moldy phenomenon of straw during production and use in the humid environment in the south has not been considered.

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