SULFATE RESISTANCE OF BLENDED CEMENT - PREDICTION AND RELATION WITH FLEXURAL STRENGTH

被引：40
|
作者：
IRASSAR, EF
机构：
来源：
CEMENT AND CONCRETE RESEARCH | 1990年 / 20卷 / 02期
关键词：
D O I：
10.1016/0008-8846(90)90073-7
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This paper presents two studies on sulfate resistance. One is destined to predict sulfate performance of blended cements. The Koch & Steinegger method and a polynomial equation to model evolution of test-parameter were used. A new criterion of evaluation, crack-time, is proposed. The other one, on the effect of pozzolan addition, establishes the relation between flexural strength development and sulfate resistance of these cements. Forty-one mortars containing different cement types and pozzolans or slag are computed and analyzed. Results show that the performance of blended cements can be predicted with 77 days of test-duration, but for high sulfate resistance blended cements 180 days are needed. Crack stress in sulfate environment is related to mechanical strength of mortar and crack-time depends on mortar capacity to develop tensile strength. © 1990.
引用
收藏
页码：209 / 218
页数：10
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