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Weathering and aggregate suitability—A case history from the “Victoria” project,Sri Lanka
Authors:C. Stevens
Affiliation:1. Sir Alexander Gibb & Partners, Earley House, 427 London Road, Reading, UK
Abstract:
The Victoria Project under construction near Kandy in Sri Lanka, required 1.7 million tonnes of aggregate to be quarried in slightly weathered gneiss. This paper describes an investigation into the strength and durability of the as-produced aggregate which contained a small proportion of weathered fragments. These tests were carried out before full scale production commenced as part of an aggregate acceptance test programme. A range of laboratory tests and the results of petrographic examination were correlated with simple counts of weathered aggregate fragments in stockpiles. It was found that the properties of the aggregate from normal production differed little from those of completely fresh aggregate, and that there was excellent correlation between all testing methods.
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