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Author(s): Katz, A., Bentur, A., and Wasserman, R.
Paper category: Conference
Book title: XIII International Conference on Durability of Building Materials and Components - XIII DBMC
Editor(s): Marco Quattrone, Vanderley M. John
Print ISBN: none
e-ISBN: 978-2-35158-149-0
Publication year: 2015
Pages: 1137-1142
Total Pages: 6
Language: English

Abstract: Requirement for minimum cement content exists in many international standards. This requirement varies according to environmental exposure where higher cement contents are required in environments that are more aggressive.

This work reports the study of the properties of concrete at varying water to cement (w/c) ratios of 0.45 to 0.70 and varying cement contents in each of them. Reducing cement contents was achieved by lowering the water demand while maintaining good workability with the aid of water reducing agents of different types at varying dosages. The properties of interest were those related to durability (carbonation, chlorides ingress, porosity etc.) in addition, of course, to strength.

It was found that strength, carbonation and shrinkage were related to w/c and independent of cement content. Capillary absorption and chloride ingress were reduced with reduction in w/c but also with reduction in cement content at a given w/c. These observations challenge the prevailing opinion presented in the standards regarding the requirement for minimum cement content.

Online publication: 2015
Publication Type: full_text
Public price (Euros): 0.00

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