RECYCLED CONCRETE AGGREGATE: AN ALTERNATIVE CONCEPT
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Published:1998
A G Johnston, A R Dawson, G J Brown, 1998. "RECYCLED CONCRETE AGGREGATE: AN ALTERNATIVE CONCEPT", Sustainable Construction: Use of Recycled Concrete Aggregate: Proceedings of the International Symposium organised by the Concrete Technology Unit, University of Dundee and held at the Department of Trade and Industry Conference Centre, London, UK on 11 – 12 November 1998, Ravindra K. Dhir, Neil A. Henderson, Mukesh C. Limbachiya
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An alternative concept for the recycling of concrete waste is to recover clean, unbound, coarse aggregate from the concrete matrix. This paper describes a programme of investigations into aggregate liberation, which resulted when concrete specimens were subjected to compressive failure enacted through staged size reduction using crushing machines. Both roll and jaw crushers were used and the products were subsequently treated in a ball mill. The liberation characteristics of standard concrete mixes with respect to aggregate type, crushing-induced failure and abrasion through milling are presented.
ABSTRACT
INTRODUCTION
ENVIRONMENTAL BENEFITS
EXPERIMENTAL STUDY
EXPERIMENTAL RESULTS
DISCUSSION
ACKNOWLEDGEMENTS
REFERENCES
