METHOD FOR MANUFACTURING LIGHTWEIGHT CONCRETE, PRECAST LIGHTWEIGHT CONCRETE MOLDED PRODUCT AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To enhance the production efficiency of lightweight concrete using aggregate low in water content.;SOLUTION: When lightweight concrete is manufactured through a dry mixing process S40 and a kneading process S50 by using artificial lightweight aggregate with a water content of 5% or below, correction water and kneading/mixing water are collectively charged in the kneading process S50 to reduce supply labor of water. In the dry mixing process S40, correction water is not charged at all. Further, the amount of correction water is prescribed as an amount estimated to be absorbed within the manufacturing time from the start of the kneading process S50 to the completion of the finishing process S70.;COPYRIGHT: (C)2004,JPO&NCIPI