CALCIUM SILICATE-BASED ALC RAW MATERIAL USING ALC WASTE MATERIAL AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To obtain an ALC(autoclaved lightweight concrete) raw material and to provide a method for producing the ALC raw material by recycling an ALC waste material developed from a building site, a demolishing site thereof or an ALC manufacturing plant for meeting exhaustion of natural raw materials such as a silicaous material and a calcareous material. SOLUTION: The ALC waste material is recycled for production of the ALC as a calcium silicate-based raw material by grinding a crushed sabstance of the ALC waste material such as an ALC panel and carrying out heat treatment at 105-800 deg.C. The calcium silicate-based raw material contains a calcium silicate- based mineral obtained by partially or wholly dehydrating crystal water in tobermorite.