Recycled aggregate composite cavity type water storage brick

Abstract

The invention provides a recycled aggregate secondary composite cavity type water storage brick. A brick body comprises an external water retention layer body with the upper surface being an open surface, and a water storage core body and a soil moisture conservation planted grass layer body which are positioned in the water retention layer body, and when the brick is used, the open surface of the water retention layer body faces up, and the soil moisture conservation planted grass layer body is positioned above the water storage core body in the length direction of the brick body; the water storage core body comprises coarse aggregates, straws, Malan loess and natural auxiliary materials; the external water retention layer body is produced from fine aggregate concrete; and the soil moisture conservation planted grass layer body is filled with sandy soil in the later stage. The recycled aggregate composite cavity type water storage brick increases the water absorption performance of the brick, so the internal water absorption rate is 36-38%; and the sandy soil filled in the moisture preservation planted grass layer body has water permeation and water absorption properties, and plays a role in soil moisture conservation, so the water absorption rate of a water permeable layer body is 6-7%.

Description

technical field [0001] The invention belongs to the technical field of building brick materials, in particular to a regenerated aggregate secondary compound cavity water storage brick. Background technique [0002] In recent years, the world's construction industry has entered a stage of rapid development. With the development of society, the expansion of cities and the gradual end of service life of some old buildings, the discharge of construction waste in our country is increasing year by year. As the main component of urban waste, construction waste accounts for about 30% to 40% of the total waste. Waste concrete is the main component of construction waste. If these waste concrete is not recycled in time, it will not only pollute the environment, but also cause a waste of resources. Similarly, in recent years, crop straw has become a new source of rural non-point source pollution. Every summer and winter harvest, there is always a large amount of wheat, corn and other...

AI Technical Summary

Problems solved by technology

Some grass-planting bricks currently on the market in my country are ordinary permeable concrete bricks. Although the cost of concrete permeable bricks is low, the existing concrete permeable bricks have coarse particles on the surface (generally, the aggregate particle size is 3mm-6mm). The pores are permeable, and the porosity is above 20%, which can achieve the effect of water permeability, but it cannot achieve the effect of storing water first and then retaining water. Moreover, the turf survival rate of existing grass planting bricks is low, and it is not resistant to trampling, and the exposed surface of grass planting bricks is relatively large , unsightly

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