Aggregate-cement chemical interactions

This paper highlights the role played by aggregate with respect to the chemical interactions that take place within the interfacial transition zone between aggregates and cement paste matrix. Four commonly used aggregates with different chemical properties, basalt, limestone, silica sand, and quartz...

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Bibliographic Details
Published in:Cement and concrete research 1998-07, Vol.28 (7), p.1037-1048
Main Authors: Tasong, W.A, Cripps, J.C, Lynsdale, C.J
Format: Article
Language:English
Subjects:
Applied sciences
Buildings. Public works
Cement concrete constituents
Cements
Exact sciences and technology
Materials
Properties and test methods
Properties of anhydrous and hydrated cement, test methods
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Summary:This paper highlights the role played by aggregate with respect to the chemical interactions that take place within the interfacial transition zone between aggregates and cement paste matrix. Four commonly used aggregates with different chemical properties, basalt, limestone, silica sand, and quartzite, were investigated. It was observed that ions are both absorbed and released by the aggregates in all the aggregate-cement solution systems, with basalt being the most active in this respect. The findings reveal that aggregates are more chemically active than has been supposed and that a wide range of chemical interactions between the aggregates and cement should be anticipated.
ISSN:0008-8846
1873-3948
DOI:10.1016/S0008-8846(98)00067-2