Grass planting and sand fixing brick and preparation method thereof

Abstract

The invention discloses a preparation method of a grass planting and sand fixing brick. The preparation method is characterized by adopting the following materials in parts by mass: 5 to 15 parts of calcined desulfurization gypsum, 5 to 15 parts of sulfur-fixing ash, 60 to 80 parts of desert sand, 2 to 5 parts of crop straw powder, 0.05 to 0.15 part of a surfactant, 2 to 5 parts of an organic matter, 0.05 to 0.5 part of a water retaining agent, 0.1 to 0.5 part of herbaceous plant seeds and water of which a water-solid ratio is 0.55 to 0.7. The invention also discloses the grass planting and sand fixing brick prepared by adopting the preparation method. The grass planting and sand fixing brick disclosed by the invention is low in cost and convenient in production, the mechanical property meets the requirement of slope protection of a desert highway; the grass planting and sand fixing brick has the advantages that good environment coordination is obtained, and a suitable grass seed growth environment is provided; meanwhile, regeneration and cyclic utilization can be realized, the pavement stability is good, sand slope pavement and grass planting are facilitated, and the like.

Description

technical field [0001] The invention relates to the field of bonded bricks and desert control, in particular to a grass-planting sand-fixing brick and a preparation method thereof. Background technique [0002] The total area of ​​deserts in my country is about 700,000 square kilometers, mainly concentrated in the arid regions of northwest China. With the deterioration of the environment, the area of ​​some deserts is still expanding year by year. In order to deal with desert encroachment and prevent more land desertification, people have developed sand fixation methods such as grass square sand fixation, mechanical sand fixation and chemical sand fixation. In addition, in order to meet the road engineering slope protection in desert areas and the construction requirements of scenic roads in tourist attractions, researchers have developed methods such as laying grass-planting sand-fixing bricks, geotextile sand-fixation, geogrid sand-fixation and cement concrete grid sand-fi...

AI Technical Summary

Problems solved by technology

[0004] ① The preparation cost is high. Due to the high cost of curing agents, especially organic curing agents, the preparation cost of grass planting and sand fixing bricks is high and the promotion is difficult;

[0005] ②The high strength of the brick body leads to a low germination rate of the plant seeds reserved in the brick, which can only exert the sand-fixing effect, and the actual effect of the grass-planting brick is reduced;

[0007] ④ The self-weight is too large. In order to improve the strength of the grass-planting brick, the apparent density of the grass-planting brick usually exceeds 1000kg/m 3 , resulting in excessive weight, high transportation costs, and low handling and construction efficiency

[0008] ⑤Environmental coordination is poor. Grass planting bricks are commonly used with cu

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