کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1455688 | 989064 | 2007 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effects of mix composition and water–cement ratio on the sulfate resistance of blended cements Effects of mix composition and water–cement ratio on the sulfate resistance of blended cements](/preview/png/1455688.png)
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 a 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 C3A amounts, while the blended cements were less affected by an increase in the w/c ratio.
Journal: Cement and Concrete Composites - Volume 29, Issue 3, March 2007, Pages 159–167