The invention discloses a
fly ash and building waste water permeable
brick and a preparation method thereof, and belongs to the technical field of building materials. The
fly ash and building waste water permeable
brick is prepared from, by weight, 100 parts of
fly ash, 200-800 parts of building waste, 2-8 parts of
silica fume, 1.5-6.5 parts of alkali-activator and 18-36 parts of water. According to the fly ash and building waste water permeable
brick and the preparation method thereof,
industrial waste residues and building waste are adopted as the raw materials, the
solid waste
utilization rate is high, and the production cost is low; the molding method adopts
compression molding and is simple in technology, free of high-temperature
calcination, low in carbon,
environmentally friendly and low in
energy consumption; a cementing material is an alkali-activator
powder coal ash cementing material, and the water permeable brick prepared through the alkali-activator
powder coal ash cementing material has the advantages of being high in strength, high in water permeability, low in hydration heat, resistant to
carbonization, good in durability and the like.