%0 Journal Article
%T Effect of Stearic Acid on Ettringite Formation
%A Essam AKishar
%A <br>EssamA.Kishar
%J 材料科学技术学报
%D 2002
%I 
%X The hydration reaction of a mixture of tricalcium aluminate (C3A) and gypsum with the molar ratio of 1:3 was carried out at room temperature and a water/solid ratio of 4.0. The hydration was carried out in presence of 0, 1 and 3% stearic acid and the mixes were designated as A, B and C, respectively. Ettringite was the only hydration product formed in the presence and absence of stearic acid. Phase composition, microstructure, infra-red analysis as well as degree of hydration were carried out for the different hydration mixtures. The rate of ettringite formation in the presence of 3% stearic acid was accelerated during the first half hour of hydration, and then retardation was occurred. In the presence of 1% stearic acid the ettringite formation was accelerated first till 3 days, then retardation was observed at later hydration ages.
%K Stearic acid
%K Hydration
%K Ettringite<br>硬脂酸
%K 水合作用
%K 钙矾石
%K 室温条件
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=061583C6FD4CF448&yid=C3ACC247184A22C1&vid=13553B2D12F347E8&iid=38B194292C032A66&sid=96A53C367B5173D7&eid=FDC7AF55F77D8CD4&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=0