Title:
CEMENT FOR HIGH STRENGTH SPRAY CONCRETE AND HIGH STRENGTH SPRAY CONCRETE
Document Type and Number:
Japanese Patent JP3718697
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To produce a cement for a high strength spray concrete having a high fluidity with a low water cement ratio and exhibiting a good setting.hardening property when an accelerator is added even in the case when a mixing temp. of the spray concrete becomes high temp. like at summer.
SOLUTION: A gypsum containing ≥30wt.% anhydrous gypsum and/or gypsum dihydride is compounded to a powdery clinker in which 3CaO.Al2O3 content is 2-7wt.%, 4CaO.Al2O3.Fe2O3 content is 2-13wt.%, the sum of the 3CaO.Al2O3 and the 4CaO.Al2O3.Fe2O3 is 8-16wt.% and containing the balance 3CaO.SiO2 and 2CaO.SiO2.
Inventors:
Nawa Toyoharu
Kazuki Tokuhashi
Yuuki Watari
Kazuki Tokuhashi
Yuuki Watari
Application Number:
JP20157596A
Publication Date:
November 24, 2005
Filing Date:
July 31, 1996
Export Citation:
Assignee:
Taiheiyo Cement Co., Ltd.
International Classes:
E02D17/20; C04B7/02; C04B7/04; C04B28/04; C04B28/06; E21D11/10; (IPC1-7): C04B7/04; C04B28/04
Domestic Patent References:
| JP4149051A | ||||
| JP61036152A | ||||
| JP58110451A | ||||
| JP9165242A | ||||
| JP6080456A | ||||
| JP6279074A | ||||
| JP6024819A | ||||
| JP4238847A |
Attorney, Agent or Firm:
Michiteru Soga
Michiharu Soga
Hidetoshi Furukawa
Suzuki Kenchi
Kajinami order
Yoshio Kobayashi
Yutaka Ikeya
Masahisa Hase
Tetsuo Kuroiwa
Michiharu Soga
Hidetoshi Furukawa
Suzuki Kenchi
Kajinami order
Yoshio Kobayashi
Yutaka Ikeya
Masahisa Hase
Tetsuo Kuroiwa