MOLDED BODY OF LIGHTWEIGHT CONCRETE AND ITS PRODUCTION

摘要

PURPOSE:To increase work efficiency and to improve quality and appearance by incorporating a binder consisting of cement, fly ash and slag, lightweight aggregate and a polycarboxylic compd. and specifying bulk specific gravity. CONSTITUTION:A binder obtd. by blending 250-300 pts.wt. cement with 120-180 pts.wt. fly ash and 250-300 pts.wt. slag is mixed with 400-900 pts.wt. lightweight aggregate and a polycarboxylic compd. is added to the mixture by 0.1-1.0wt.% of the amt. of the binder in the form of an aq. soln. or in combination with water. They are mixed, molded and cured with steam under ordinary pressure to obtain the title molded body having 1.6-2.0 bulk specific gravity.