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Title:
ULTRA-HIGH-STRENGTH HIGH-FLUIDITY CONCRETE AND CEMENT COMPOSITION
Document Type and Number:
Japanese Patent JP2014169213
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an ultra-high-strength high-fluidity concrete which has a high strength development and a high fluidity while admixing a large amount of by-products and exhibits a water-binder ratio of 14.0% or less and a compressive strength exceeding 200 N/mm.SOLUTION: There is provided an ultra-high-strength high-fluidity concrete which comprises the following (a) to (e): (a) a hydraulic binder having (a-1) to (a-3), (a-1) 35 to 69 mass% of cement, (a-2) 5 to 15 mass% of a siliceous fine powder derived from a by-product having a BET specific surface area of 15 to 25 m/g, (a-3) 21 to 60 mass% of a siliceous fine powder derived from a by-product having a BET specific surface area of 1 to 3 m/g (provided that the entire hydraulic binder is defined as 100 mass%); (b) a coarse aggregate having a maximum particle diameter of 10 to 20 mm, an absolute dry density of 2.60 g/cmor more and a water absorption rate of 1.20 mass% or less; (c) an artificial high-density fine aggregate having a maximum particle diameter of 5 mm or less, an absolute dry density of 2.90 g/cmor more and a water absorption rate of 0.90 mass% or less; (d) a chemical admixture; and (e) water.

Inventors:
KOIDE TAKAO
TAKADA AOI
KUSANO MASAO
MATSUDA HIROSHI
HASUO KOICHI
Application Number:
JP2013043246A
Publication Date:
September 18, 2014
Filing Date:
March 05, 2013
Export Citation:
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Assignee:
SUMITOMO OSAKA CEMENT CO LTD
SUMITOMO MITSUI CONSTR CO LTD
International Classes:
C04B28/02; C04B18/08; C04B18/14; C04B22/14; C04B24/26
Domestic Patent References:
JP2009051682A2009-03-12
JP2012001427A2012-01-05
JP2006137630A2006-06-01
JP2008247709A2008-10-16
JPH04124054A1992-04-24
JP2009051681A2009-03-12
JP2008189491A2008-08-21
JPH07196346A1995-08-01
JP2004269318A2004-09-30
JP2006045027A2006-02-16
JP2001064066A2001-03-13
JP2009051682A2009-03-12
JP2012001427A2012-01-05
JP2006137630A2006-06-01
JP2008247709A2008-10-16
JPH04124054A1992-04-24
JP2009051681A2009-03-12
JP2008189491A2008-08-21
JPH07196346A1995-08-01
JP2004269318A2004-09-30
JP2006045027A2006-02-16
JP2001064066A2001-03-13
Foreign References:
US20080017077A12008-01-24
US20080017077A12008-01-24
Attorney, Agent or Firm:
Masatake Shiga
Norio Takahashi
Takashi Watanabe
Mitsuyoshi Suzuki
Yasuhiko Murayama



 
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