PRODUCTION OF LIGHTWEIGHT CARBONATE HARDENED BODY

摘要

PROBLEM TO BE SOLVED: To provide a production process of a lightweight carbonate hardened body, by which a further lightened carbonate hardened body having excellent heat insulation performance can be produced from powdery particles consisting essentially of a calcium silicate compound, without significantly reducing strength of the hardened body. SOLUTION: This production process comprises: mixing powdery particles consisting essentially of a calcium silicate compound with solid carbon dioxide (dry ice) to obtain a mixture; and pressing the mixture to form a hardened body from the powdery particles; wherein desirably, the powdery particles contains >=30 wt.% of the calcium compound and 3-60 pts.wt. of water is added to 100 pts.wt. of the powdery particles.