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标题：Effect of calcium chloride on the hydration characteristics of ground clay bricks cement pastes
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作者：Essam A. Kishar ; Essam A. Kishar ; Doaa A. Ahmed 等
期刊名称：Beni-Suef University Journal of Basic and Applied Sciences
印刷版ISSN：2314-8535
电子版ISSN：2314-8543
出版年度：2013
卷号：2
期号：1
页码：20-30
DOI：10.1016/j.bjbas.2013.09.003
语种：English
出版社：Elsevier
摘要：AbstractEffect of CaCl2on the hydration characteristics of the different cement pastes using ordinary Portland cement (OPC) and blended Portland cement with ground clay bricks (GCB) was studied. Various mixes were prepared using a water/solid ratio (W/S) of 0.25 (by weight). Three percentages of CaCl2(0.25, 0.5 and 0.75%) are used; the CaCl2used was dissolved in the mixing water. The hydration characteristics were tested via the determination of the combined water content, phase composition, compressive strength, total porosity (P%) and X-ray diffraction analysis (XRD) at different time intervals up to 180 days. The results showed that calcium chloride accelerates cement hydration in all systems studied. Ten % GCB in the presence of 0.50% CaCl2is the optimum ratio which has the higher compressive strength.
关键词：Blended Portland cement;Calcium chloride;Ground clay bricks;Cement hydration