CONSTRUCTION MATERIAL COMPOSITION USING FOUNDRY WASTE SAND AND METHOD OF PRODUCING CONSTRUCTION MATERIAL USING THE COMPOSITION

摘要

PURPOSE: A manufacturing method of construction material composition using waste casting sand is provided to prevent environmental pollution and recycle resources. The composition with waterproofing, soundproofing, far infrared emission and heat insulation is widely used for bricks, blocks, tiles, curbstones, etc. CONSTITUTION: The manufacturing method is as follows: mixing 40-60wt.% of waste casting sand, 5-10wt.% of black earth, 15-25wt.% of wet clay, 10-20wt.% of kaolin, 10-20wt.% of yellow earth produced from the area of Haman, 5-10wt.% of yellow earth, and water; filtering; removing stones and impurities; grinding and removing air by a vacuum kneader; pressing; drying in the shade for 1-2days, and then in the sun; sintering at 1000-1300deg.C for 24-30hrs.