CALCIUM SILICATE BASED RAW MATERIAL UTILIZING ALC SCRAP WOOD, PRODUCTION METHOD THEREFOR AND METHOD FOR PRODUCING ALC USING THE SAME RAW MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a method for reutilizing ALC (autoclaved lightweight concrete) in which the greater part has been disposed heretofore, in particular, for he production of ALC as a calcium silicate based raw material. SOLUTION: ALC scrap wood is subjected to dry pulverization, and the whole inclusive of unreacted silica stones contained in the ALC scrap wood is made into fine powder to a mean grain diameter of =75 m. Since the whole of the unreacted silica stones contained in the fine powder is reacted with a calcareous raw material to produce tobermorite, they can be used by an addition quantity of 15 wt.% to the whole of the powder raw material as an assistant raw material in the production of ALC.