Water permeable brick prepared from alkali residues and construction waste and preparation method thereof

Abstract

The invention discloses a water permeable brick prepared from alkali-residues and construction waste and a preparation method thereof, belonging to the technical field of construction material preparation. The water permeable brick is prepared from the following substances in parts by weight: 100 parts of alkali residues, 200-800 parts of construction waste, 2-8 parts of silica fume, 5-15 parts of cement, 2-7.5 parts of alkali activator and 18-40 parts of water. The water permeable brick is prepared from industrial waste residues and construction waste, and has high solid waste utilization and low production cost; the molding method adopts press molding, is simple in process, does not need high-temperature calcining, and has the advantages of low carbon, environmental friendliness and low energy consumption; and the gel material is alkali-activated alkali residue gel material to prepare the water permeable brick having the advantages of high strength, high water permeability, low hydration heat, carbonization resistance, good durability and the like.

Description

technical field [0001] The invention belongs to the technical field of building material preparation, and in particular relates to an alkali slag construction waste permeable brick and a preparation method thereof. Background technique [0002] With the rapid development of my country's economy and the vigorous development of urbanization, the original green space was replaced by large-scale ground pavement, and the formed "urban desert" greatly increased the impermeable area, making it impossible for urban rainwater to return to nature. As a result, urban The groundwater is greatly reduced, and there is a danger of urban buildings sinking; and when the city encounters a sudden heavy rain, the rainwater on the road surface cannot leak quickly, causing a great burden on urban drainage facilities and easily causing urban waterlogging. At the same time, its large area of ​​paved road weakens the breathing function of the city, which will cause the "heat island effect", reduce th...

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Problems solved by technology

The production cost of ecological ceramic permeable bricks prepared by this method is high; ecological ceramic permeable bricks are calcined at high temperature, which consumes construction waste while increasing energy consumption, aggravating the greenhouse effect, and causing certain harm to the environment