PROCESS FOR PRODUCING CURED MAGNESIA CEMENT FOAM, CURED FOAM OBTAINED BY THE PROCESS, AND MOLDED OBJECT COMPRISING THE CURED OBJECT

摘要

A process for producing a cured magnesia cement foam which comprises preparing an aqueous solution of magnesium chloride, mixing this aqueous solution with a water-reducing agent and magnesium oxide, subsequently introducing a blowing agent thereinto, stirring them to prepare an aqueous slurry, and curing the aqueous slurry obtained, wherein the magnesium oxide and the magnesium chloride are used in a molar ratio of (7-13):1 and the water-reducing agent comprises a carboxylic acid type water-reducing agent and a sulfonic acid type water-reducing agent in a proportion of from 1:5 to 2:1 by weight. By the process, a cured magnesia cement foam can be produced which decreases only slightly in strength with decreasing density.