Preparation method of composite ecological permeable water storage material

Abstract

The invention relates to a preparation method of a composite ecological permeable water storage material. The preparation method comprises the following steps: (1) breaking waste sintered bricks as construction wastes or concrete into aggregates and taking agricultural waste rice husk ash as a filler; (2) proportioning according to the ratio of cement to rice husk ash to water of 1:(0.5-0.95):(0.95-1.35), uniformly stirring, pouring into a mold and forming under pressure of 0.3-1.2 MPa; proportioning according to the ratio of cement to rice husk ash to construction wastes to water of 1:(0.1-0.4):(3.0-4.0):(0.9-1.2), uniformly stirring, pouring into the formed mold and forming under pressure of 0.5-1.5 MPa; (3) performing normal-temperature and humidity curing for 24 hours, demolding, spreading grass seeds on the surface, covering with soil, watering and curing for 28 days at a normal temperature. The material prepared by the preparation method provided by the invention not only can be used for sponge city construction, but also can reduce drainage and flood pressure, relieve a heat island effect, maintain soil moisture, improve the survival conditions of ground vegetations and soil microbes, relieve the resource pressure and improve the resource utilization rate.

Description

technical field [0001] The invention belongs to the field of composite ecological material preparation, and relates to a method for preparing water storage and permeable materials by recycling construction waste and chaff ash. Background technique [0002] With the rapid development of urbanization and urban construction, my country is facing a series of serious ecological problems such as urban rain and flood, urban waterlogging, smog pollution, water system pollution, water resource shortage, groundwater depletion, and loss of aquatic habitats. In addition, the scale of urban housing and infrastructure construction is expanding day by day, and the amount of new construction, expansion and demolition continues to increase, resulting in a large amount of construction waste, which not only wastes a lot of resources, but also seriously affects people's living environment. According to the data, the construction waste generated by the demolition of old buildings in the country ...

AI Technical Summary

Problems solved by technology

In addition, the scale of urban housing and infrastructure construction is expanding day by day, and the amount of new construction, expansion and demolition is increasing, resulting in a large amount of construction waste, which not only causes a lot of waste of resources, but also seriously affects people's living environment

According to the data, the construction waste generated by the demolition of old buildings in the whole country reaches 800 million tons every year, and the total amount of construction waste generated by newly built and demolished buildings reaches 1.5-1.7 billion tons every year, but the utilization rate of domestic construction waste is extremely low at present.