Title:
LIGHTWEIGHT AERATED CONCRETE
Document Type and Number:
Japanese Patent JP3234290
Kind Code:
B2
Abstract:
PURPOSE: To improve freezing resistance, durability and workability by specifying a prescribed average air bubble diameter, gas permeability and specific gravity.
CONSTITUTION: A mixture is obtained by adding a foaming agent such as water and metal aluminum or foams produced by a surfactant into main raw materials of a calcareous raw material such as quick lime, cement and a siliceous raw material such as silica rock. The mixture is poured into a forming flask, is hardened and is formed by cutting or the like to obtain a forming body. By aging the forming body in a saturated steam of about 10atm to grow crystals of calcium silicate, the lightweight aerated concrete having ≥0.1mm to <0.4mm average air bubble diameter, ≥1×10-6cm3/sec2 to <5×10-5cm3/sec2 gas permeability and ≥0.4 t <0.7 specific gravity is produced.
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Inventors:
Yuichi Doi
Hironori Terada
Hironori Terada
Application Number:
JP19384292A
Publication Date:
December 04, 2001
Filing Date:
July 21, 1992
Export Citation:
Assignee:
ASAHI KASEI KABUSHIKI KAISHA
International Classes:
C04B38/00; C04B38/02; E04C2/04; (IPC1-7): C04B38/00; E04C2/04
Domestic Patent References:
| JP5742565A | ||||
| JP6186471A | ||||
| JP62162678A | ||||
| JP6190199A |