SETTING REGULATOR, GROUTING MATERIAL COMPOSITION, AND SOIL IMPROVEMENT USING THE COMPOSITION

Japanese Patent JP3400892

B2

PURPOSE: To obtain a grouting composition suitable for improving esp. poor ground in the seaside area by incorporating a quick-setting cement with a setting regulator comprising an organic acid compound, alkali metal carbonate and acidic substance.
CONSTITUTION: This grouting composition is obtained by incorporating (A) 100 pts.wt. of a quick-setting cement comprising 100 pts.wt. of cement and 5-60 pts.wt. of a quick-setting material comprising calcium aluminate (and gypsum) with a setting regulator comprising (B) 0.01-10 pts.wt. of an organic acid compound, (C) 0.01-10 pts.wt. of an alkali metal carbonate and (D) 0.01-10 pts.wt. of an acidic substance. In prectical use, a cement slurry is prepared from 100 pts.wt. of cement and 90-250 pts.wt. of water, while another slurry is prepared from the quick-setting material, the setting regulator and 150-600 pts.wt., based ib 100 pts.wt. of the quick-setting material, of water, and both the slurries are mixed with each other and the mixture is injected into the ground to accomplish soil improvement.

Kenkichi Hirano
Eiichi Arimizu
Akitoshi Araki

JP13675595A

April 28, 2003

June 02, 1995

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DENKI KAGAKU KOGYO KABUSHIKI KAISHA

E02D3/12; C04B22/10; C04B22/16; C04B24/04; C04B28/02; C04B40/00; C09K17/06; C09K17/08; C09K17/44; C09K17/48; C04B103/10; C09K103/00; (IPC1-7): C04B22/16; C04B22/10; C04B24/04; C09K17/06; C09K17/08; C09K17/44; C09K17/48; E02D3/12

JP2293363A
JP59121144A
JP6042263A
JP450152A

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