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Title:
CONCRETE COMPOSITION, PROCESS FOR PRODUCING THE SAME, METHOD OF REGULATING VISCOSITY, AND METHOD OF CONSTRUCTING CAST-IN-PLACE CONCRETE PILE FROM THE CONCRETE COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2005/095300
Kind Code:
A1
Abstract:
In producing a concrete composition by adding a thickening admixture to cement, water, and an aggregate and kneading them, use is made as the thickening admixture of an additive which comprises a first water-soluble low-molecular compound (A) and a second water-soluble low-molecular compound (B) and which is an additive selected among additives in which the combinations of the compounds (A) and (B) respectively are: a combination of a compound (A) selected among amphoteric surfactants and a compound (B) selected among anionic surfactants; a combination of a compound (A) selected among cationic surfactants and a compound (B) selected among anionic aromatic compounds; and a combination of a compound (A) selected among cationic surfactants and a compound (B) selected among boron compounds. Thus, a concrete composition can be obtained which is usable for, e.g., an extruded concrete lining material in the shield tunneling technique and is excellent not only in early strength but in water resistance.

Inventors:
Sato, Kouichi c/o KUMAGAI GUMI CO. (LTD. 2-1 Tsukudo-ch, Shinjuku-ku Tokyo 57, 16285, JP)
Kanamori, Seiji c/o KUMAGAI GUMI CO. (LTD. 2-1 Tsukudo-ch, Shinjuku-ku Tokyo 57, 16285, JP)
Nonaka, Akira c/o KUMAGAI GUMI CO. (LTD. 2-1 Tsukudo-ch, Shinjuku-ku Tokyo 57, 16285, JP)
Watanabe, Norio c/o KUMAGAI GUMI CO. (LTD. 2-1 Tsukudo-ch, Shinjuku-ku Tokyo 57, 16285, JP)
Aono, Takayuki c/o FATEC CO. LTD. (2-1, Tsukudo-ch, Shinjuku-ku Tokyo 21, 16208, JP)
Application Number:
PCT/JP2005/005771
Publication Date:
October 13, 2005
Filing Date:
March 28, 2005
Export Citation:
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Assignee:
KUMAGAI GUMI CO., LTD. (6-8 Chuo 2-chome, Fukui-shi Fukui, 06, 91000, JP)
FATEC CO., LTD. (2-1 Tsukudo-cho, Shinjuku-ku Tokyo, 21, 16208, JP)
Sato, Kouichi c/o KUMAGAI GUMI CO. (LTD. 2-1 Tsukudo-ch, Shinjuku-ku Tokyo 57, 16285, JP)
Kanamori, Seiji c/o KUMAGAI GUMI CO. (LTD. 2-1 Tsukudo-ch, Shinjuku-ku Tokyo 57, 16285, JP)
Nonaka, Akira c/o KUMAGAI GUMI CO. (LTD. 2-1 Tsukudo-ch, Shinjuku-ku Tokyo 57, 16285, JP)
Watanabe, Norio c/o KUMAGAI GUMI CO. (LTD. 2-1 Tsukudo-ch, Shinjuku-ku Tokyo 57, 16285, JP)
Aono, Takayuki c/o FATEC CO. LTD. (2-1, Tsukudo-ch, Shinjuku-ku Tokyo 21, 16208, JP)
International Classes:
B28C7/00; C04B22/12; C04B24/12; C04B24/16; C04B28/02; C04B40/00; E02D5/34; C09K17/44; (IPC1-7): C04B28/02; B28C7/00; C04B22/12; C04B24/12; C04B24/16; E02D5/34
Foreign References:
JP2003313536A
JP2003238222A
JPS58106015A
Other References:
'Viscotop' KAO CHEMICAL DAYORI, KAO CORP no. 52, 01 October 2003, pages 12 - 13, XP002992693
Attorney, Agent or Firm:
Miyazono, Junichi (6th Fl, Fifth Tanaka Bldg. 4-4, Iidabashi 3-chom, Chiyoda-ku Tokyo 72, 10200, JP)
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