FORMATION OF SOLUBLE ANHYDRITE BY SALICYLIC-ACID EXTRACTION OF CALCIUM SILICOSULFATE

被引:1
|
作者
TANG, FJ
GARTNER, EM
机构
[1] PCA, Chemical/Physical Research Dep,, Skokie, IL, USA, PCA, Chemical/Physical Research Dep, Skokie, IL, USA
关键词
CEMENT; -; Analysis;
D O I
10.1016/0008-8846(84)90009-7
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Calcium silicosulfate and anhydrite were subjected to extraction by salicyclic acid in methanol. Only calcium silicosulfate was affected, leaving a residue which was identified as 'soluble anhydrite'. The fraction of residue produced was close to that expected for stoichiometric precipitation of sulfate as CaSO//4. It is suggested that soluble anhydrite found in cement clinker residues after salicylic acid extraction may form in a similar manner from sulfate ions.
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页码:839 / 842
页数:4
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