Nonflammable building material and process for preparing same

Details Nonflammable building material and process for preparing same Nonflammable building material and process for preparing same

C - Chemistry, Metallurgy

04

B

25/111, 261/53

C04B 28/18 (2006.01) B28B 1/52 (2006.01)

Patent

CA 1146604

ABSTRACT OF THE DISCLOSURE A nonflammable building material compromising 3 to 20 parts by weight of a finely divided mineral about 10,000 cm2/g in Blaine value and 0.3 to 0.8 in apparent density and 100 parts by weight of a mixture admixed therewith and composed of 20 to 60% by weight of a finely divided aggregate wholly passing through a 4-mesh screen and containing not more than 5% of particles of plus 200 mesh size, 1.0 to 7.0% by weight of a pulp, 0.05 to 2.0% by weight of an organic fiber and the balance cement and siliceous sand in a CaO/SiO2 mole ratio of 0.5 - 1Ø The nonflammable building material is produced by a process comprising the steps of preparing a starting mixture of the above composition, spreading the mixture on a belt conveyor, causing water to penetrate into the spread mixture, shaping the wet mixture under pressure and curing the mixture in an autoclave.

346975

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