QUICK HARDENING TYPE WATER PERMEABLE CONCRETE

Japanese Patent JP2002226254

A

To obtain a quick hardening type water permeable concrete having excellent water permeability, high flexural strength and excellent development of early age strength.

This quick hardening type water permeable concrete is produced by molding a mixed/kneaded material of a composition comprising coarse aggregate and paste or mortar or which a volume ratio thereof to the coarse aggregate is 30 to 80%. The paste or mortar comprises 100 pts.wt. of a hydraulic material, 0 to 150 pts.wt. of fine aggregate, 0.1 to 2.0 pts.wt. of a water reducing agent and 15 to 30 pts.wt. of water. The hydraulic material is a quick hardening cement comprising 20 to 60 wt.% of a clinker consisting mainly of calcium sulfoaluminate, 20 to 70 wt.% of a Portland cement clinker, 0.5 to 30 wt.% of anhydrous gypsum, 0.1 to 3.0 wt.% of an alkali metal carbonate and 0.05 to 4.0 wt.% of an organic acid, wherein molar ratio of SO3/Al2O3 is 1.0 to 1.4.

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KAJIO SATOSHI
ICHIKAWA KATSUTOSHI
OBATA AKIRA
SATO TATSUZO
OKADA MITSUYOSHI
ONISHI TATSUTO
KUGA HIROSHI

JP2001016799A

August 14, 2002

January 25, 2001

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TAIHEIYO CEMENT CORP
ONODA CHEMICO CO LTD

E01C7/14; C04B28/06; C04B28/16; E01C11/24; C04B111/00; (IPC1-7): C04B28/16; E01C7/14; E01C11/24

JP2001019568A	2001-01-23
JPH0987053A	1997-03-31
JPH07206537A	1995-08-08
JPH01290543A	1989-11-22

Hokuta Naoyuki

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