Effects of mix composition and water-cement ratio on the sulfate resistance of blended cements

被引：90

作者：

Sahmaran, M. ^{[1
]}

Kasap, O. ^{[1
]}

Duru, K. ^{[1
]}

Yaman, I. O. ^{[1
]}

机构：

[1] Middle E Tech Univ, Dept Civil Engn, TR-06531 Ankara, Turkey

来源：

CEMENT & CONCRETE COMPOSITES | 2007年 / 29卷 / 03期

关键词：

blended cement; sulfate attack; fly ash; natural pozzolan;

D O I：

10.1016/j.cemconcomp.2006.11.007

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper presents an experimental investigation on the sulfate resistance of blended cements containing various amounts of natural pozzolan and/or Class-F fly ash. The performance of blended cements was monitored by exposing the prepared mortar specimens to a 5% Na2SO4 Solution for 78 weeks. For comparison, an ordinary Portland cement (produced with the same clinker as blended cements) and it sulfate resistant Portland cement (produced from a different clinker) were also used. In addition to the cement chemistry, water-cement (w/c) ratio of mortars was another parameter selected that will presumably affect the performance of mortars. The experimental results of expansion measurements showed that the effect of w/c ratio was more pronounced for the low sulfate resistant cements with higher C(3)A amounts, while the blended cements were less affected by an increase in the w/c ratio. (C) 2006 Elsevier Ltd. All rights reserved.

引用

页码：159 / 167

页数：9

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