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Title:
CONCRETE COMPOSITION USED FOR SHIELD DRIVING DIRECT PLACING METHOD AND ITS PRODUCTION METHOD
Document Type and Number:
Japanese Patent JP2005281089
Kind Code:
A
Abstract:

To provide a concrete composition used for a direct placing concrete lining material in a shield driving method and having excellent early strength developability and excellent water resistance.

In the case of producing the concrete composition used for the shield driving direct placing method, an additive containing a 1st water-soluble low molecular compound (A) and a 2nd water-soluble low molecular compound (B) in addition to a chemical admixture for concrete and selected from additives each in a combination that the compound (A) and the compound (B) are respectively a compound (A) selected from ampholytic surfactants and a compound (B) selected from anionic surfactants, respectively a compound (A) selected from cationic surfactants and a compound (B) selected from anionic surfactants or respectively a compound (A) selected from cationic surfactants and a compound (B) selected from bromine compounds is blended as a thickening admixture .


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Inventors:
SATO KOICHI
KANAMORI SEIJI
NONAKA SUGURU
AONO TAKAYUKI
Application Number:
JP2004000099552
Publication Date:
October 13, 2005
Filing Date:
March 30, 2004
Export Citation:
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Assignee:
KUMAGAI GUMI CO LTD
FATEC KK
International Classes:
E21D11/10; C04B14/02; C04B22/12; C04B24/12; C04B24/16; C04B24/20; C04B24/26; C04B28/02; C04B111/27; (IPC1-7): C04B28/02; C04B14/02; C04B22/12; C04B24/12; C04B24/16; C04B24/20; C04B24/26; E21D11/10
Domestic Patent References:
JP2003313536A2003-11-06
JP2003313537A2003-11-06
JP2003238222A2003-08-27
JP2002194997A2002-07-10
JP2005187261A2005-07-14
Attorney, Agent or Firm:
宮園 純一