LIGHTWEIGHT AGGREGATE MADE FROM WASTE STONE SLUDGE OF BASALT

摘要

The present invention relates to a lightweight aggregate using waste stone sludge of basalt and a production method thereof. The lightweight aggregate is obtained by the steps of: mixing a mixture formed of 80-100 wt% of basalt stone sludge, 10-20 wt% of jeju clay, 50-100 wt% of glass powder, and 5-10 wt% of calcium carbonate with water to obtain a molded body; and plasticizing and foaming the molded body, and drying. The lightweight aggregate is also obtained by the steps of: mixing 100 wt% of basalt stone sludge and 0.5-1.0 wt% of silicon carbide (SiC); adding water 20 wt% of watery glass, and molding the mixture into a molded body; and plasticizing and foaming the molded body, and drying. [Reference numerals] (AA) Mixing materials for a molded body;(BB) Adding water or water glass in the mixed material;(CC) Pressing and molding;(DD) Drying;