Method for making non-sintered hardened body

Application Number: 00107061
Application Date: 2000.04.25
Publication Number: 1276355
Publication Date: 2000.12.13
Priority Information: 1999/6/7 JP 159811/99
International: C04B28/18
Applicant(s) Name: K. K. Ina
Address:
Inventor(s) Name: Susumi Hirohito;Maenami Yoteru;Sugie Tsuneki
Patent Agency Code: 31100
Patent Agent: chen jianhua
Abstract The present invention provided a method for producing an unburned cured product which has a practical strength, by using a siliceous substance and a calcareous substance as hydrothermal solidification raw materials. This method for producing an unburned cured product comprises molding raw materials comprising a siliceous substance and a calcareous substance and then subjecting the obtained molded product to a hydrothermal treatment. The siliceous substance has an average particle diameter of 5 to 300 mu m and a uniformity of 1 to 25. The average particle diameter is expressed by a particle diameter D50 which means that the cumulative weight of the particles under a screen is 50 wt.%. The uniformity is expressed by a particle diameter D60/particle diameter D10 ratio. The particle diameter D60 and the particle diameter D10 mean that the cumulative weights of the particles under a screen is 60 wt.% and 10 wt.%, respectively. The pressure of the molding is >=10 MPa.