Method for producing road water permeable brick by using steel slag

Disclosed is a method for producing a road water permeable brick by using steel slag. The method is characterized in that the steel slag which is from slag fields and are subjected to wheel-style water quenching and pelletization are subjected to screening, wherein the steel slag larger than 5mm is directly used as aggregate, and the steel slag smaller than 5mm is used as cementing materials; each raw material is dried until the moisture content of the raw material is 0.01%-1%; the steel slag smaller than 5mm is ground into micro powders with 400m /Kg specific surface areas, and then cement clinkers, gypsum and slag micro powders are jointly used as the cementing materials for mixing grinding, wherein the proportion of the cementing materials is 70%-80% of the steel slag aggregate, 10%-20% of the slag micro powders, 5%-10% of the steel slag micro powders, 3%-5% of the cement clinkers and 2%-5% of the desulfuration gypsum; and then the steel slag aggregate, the cementing materials and water are stirred according to a water-cement ratio of 0.25-0.35, the mixed materials are filled into a mold for mechanical mashing and pressing, finally molding pressing is performed, and 5 hours of water spraying curing of the steel slag water permeable brick is performed. The method for producing the road water permeable brick by using the steel slags has the advantages of being high in steel slag utilization ratio and simple in production process, the quality of the water permeable brick can reach national standard requirements, and the water permeable brick is difficult to crack.