SHRINKAGE AND CREEP OF CONCRETE CONTAINING 50% LIGNITE FLY ASH AT HIGH TEMPERATURES.

被引:0
|
作者
Nasser, Karim W. [1 ]
Al-Manaseer, Akthem A. [1 ]
机构
[1] Univ of Saskatchewan, Saskatoon,, Sask, Can, Univ of Saskatchewan, Saskatoon, Sask, Can
来源
Cement, Concrete and Aggregates | 1987年 / 9卷 / 02期
关键词
CONCRETE AGGREGATES - Fly Ash - CONCRETE TESTING - High Temperature Effects;
D O I
10.1520/cca10074j
中图分类号
学科分类号
摘要
This paper investigates the influence of high temperature on the shrinkage and creep of unsealed and sealed concrete containing 50% Saskatchewan lignite fly ash and 50% Type I portland cement. Concrete was tested at six different temperatures between 70 and 450 degree F (21 and 232 degree C) and under three stress levels of 750, 1200, and 1500 psi (5. 2, 8. 3, and 10. 3 MPa). The tests were made on 3 by 9-in. (75 by 225-mm) concrete cylinders, and shrinkage and creep were measured for a maximum period of 112 days. It was found that the shape of the shrinkage and the creep time curves were similar at both normal and elevated temperatures.
引用
收藏
页码:95 / 100
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