Journal of Advanced Concrete Technology
Online ISSN : 1347-3913
ISSN-L : 1346-8014
Scientific paper
Decision-making on Increasing Limestone Content of General Purpose Cement
Iman (James) MohammadiWarren South
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2015 Volume 13 Issue 11 Pages 528-537

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Abstract

Following the publication of the Australian Standard AS 3972, “General purpose and blended (GP) cements” in 2010, a research programme was undertaken to determine the effect, if any, of increasing the maximum permissible mineral addition in Type GP cement. This paper involves the assessment of the variation in standard laboratory concrete properties due to increasing the limestone addition in cement. Workability, bleed water, compressive strength and drying shrinkage of concrete samples with different limestone contents in the range of 5% to 12% were examined. Based on the research results, it is recommended that the maximum allowable mineral addition in Type GP cement be increased from 7.5% to 12%.

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© 2015 by Japan Concrete Institute
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