Title:
【発明の名称】低発熱型早強セメントおよびこれを用いた低発熱型早強コンクリ―ト
Document Type and Number:
Japanese Patent JP3040985
Kind Code:
B1
Abstract:
PROBLEM TO BE SOLVED: To provide low exothermic high-early-strength cement which exhibits low temp. rise when it is used for producing mass concrete and which shows early strength developing property with the age of 7 days, which property is equivalent to or better than the early strength developing property which is obtained when the high-early-strength portland cement is used and to provide concrete having improved early strength for the age of 7 days, adiabatic temp. rise or the like, which is obtained by combining the low exothermic high-early- strength cement. SOLUTION: The low exothermic high-early-strength cement is comprised of a mixture of 75 to 90 wt.% high-early-strength portland cement and 10 to 25 wt.% high belite cement. Limestone powder can be added to this cement. Concrete is preferably produced by adding a high performance AE water reducer containing a sulfonic acid salt as a main component or an accelerating agent containing a nitrogen-containing inorganic compound as a main component to the cement and kneading.
Inventors:
Yasunori Suzuki
Yoshinari Terano
Yuichi Kotabe
Yoshinari Terano
Yuichi Kotabe
Application Number:
JP5717299A
Publication Date:
May 15, 2000
Filing Date:
March 04, 1999
Export Citation:
Assignee:
Sumitomo Osaka Cement Co., Ltd.
International Classes:
C04B7/02; C04B7/345; C04B28/04; C04B111/76; (IPC1-7): C04B7/02; C04B7/345; C04B28/04
Domestic Patent References:
| JP8175854A | ||||
| JP570192A | ||||
| JP7277803A |
Attorney, Agent or Firm:
Akihide Sugimura (8 outside)