Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
CEMENT FOR HIGH STRENGTH AND HIGH FLUIDITY CONCRETE AND HIGH STRENGTH AND HIGH FLUIDITY CONCRETE
Document Type and Number:
Japanese Patent JPH11278908
Kind Code:
A
Abstract:

To provide a cement for high-strength and high fluidity concrete that shows high fluidity and low viscosity at a low water to cement ratio without silica fume and realizes high strength, when it is exposed to a thermal history in the high strength and high fluidity lower than about 80 N/mm2 the specified concrete strength that is used in the construction of, for example, multistorey reinforced concrete structures or concrete-filling tubes.

Fly ash with a particle size of ≤20 μm is formulated to the cement composition containing cement clinker in which the Al2O3/Fe2O3 ratio is 0.05-0.62 or microfine powdery particles of blast furnace slag having a specific surface area of 5,000-10,000 cm2/g are formulated thereto in an amount of 10-60 wt.%.


Inventors:
Nagaoka, Seiichi
Yasumoto, Reiji
Isohata, Tatsuo
Akiyama, Tatsushi
Yamamoto, Takanori
Application Number:
JP1998000086682
Publication Date:
October 12, 1999
Filing Date:
March 31, 1998
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
SUMITOMO OSAKA CEMENT CO LTD
International Classes:
C04B28/04; (IPC1-7): C04B28/04
Attorney, Agent or Firm:
藤本 昇 (外1名)