Steel slag ecological permeable pavement brick and production method thereof

Abstract

The invention discloses a steel slag ecological permeable pavement brick and a production method thereof. The pavement brick comprises a substrate layer and a surface layer, wherein raw materials of the substrate layer comprise 10 to 35 weight percent of BPN50 steel slag molding sand, 10 to 25 weight percent of BPN100 steel slag molding sand, 15 to 65 weight percent of macadam and 15 to 25 weight percent of cement; and raw materials of the surface layer comprise 30 to 75 weight percent of BPN25 steel slag molding sand, 0 to 45 weight percent of quartz sand and 25 percent of cement, wherein iron content in the steel slag molding sand is less than 1 weight percent. The steel slag ecological permeable pavement brick is molded at normal temperature, is not needed to be sintered, is energy-saving and environment-friendly and has high compression strength, high abrasive resistance and obvious permeable effect; and steel slag can replace lots of natural macadam and quartz sand for producing the ecological permeable brick, metallurgical byproducts are effectively utilized, and the steel slag ecological permeable pavement brick has obvious social, economic and environment-friendly benefits.

Description

technical field

[0001] The invention belongs to the field of building materials and relates to the preparation of steel slag ecological permeable pavement bricks by using steel slag as a main raw material. More specifically, the invention relates to a steel slag ecological permeable pavement brick and a production method thereof. Background technique

[0002] Steel slag is a by-product of the steelmaking process, and its discharge volume is large, accounting for 15-20% of steel production. With the rapid development of the economy, the rational use of resources and the increasing awareness of environmental protection, the treatment and utilization of steel slag is being paid more and more attention by countries all over the world. Developed countries have their own characteristics in the utilization of steel slag according to their national conditions, but most of them are used for land reclamation, land reclamation, Highway base materials, stockyard backfill and re-smelting...