VARIATION IN PARTICLE SIZE DISTRIBUTION FROM PRIMARY CRUSHING OF DEMOLITION WASTE
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Published:1998
O I Ogwuda, J Underwood, D Fordyee, 1998. "VARIATION IN PARTICLE SIZE DISTRIBUTION FROM PRIMARY CRUSHING OF DEMOLITION WASTE", 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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This work investigates the variability in particle size distribution of sixty samples of demolition waste produced by different primary crushing processes. The demolition waste consisted of mainly concrete, clay bricks and clinker (breeze) blocks with concrete forming most of the waste. The results indicate that the particle size distribution curves are consistently well-graded, not significantly variable and similar to British specification for sub-base Type 1 material in spite of the variable nature of the demolition waste and the unsophisticated primary crushing processes (compared to quarry processes). With good control during the demolition and primary crushing processes consistent demolition waste can be produced. The work forms part of an overall research investigation to assess the load-bearing and durability characteristics of demolition wastes for use in road pavements.
ABSTRACT
INTRODUCTION
PRODUCTION OF CRUSHED DEMOLITION WASTE
DEMOLITION WASTE MATERIALS
SAMPLING
LABORATORY WORK
RESULTS AND DISCUSSION
PRACTICAL APPLICATION OF RESULTS
CONCLUSIONS
ACKNOWLEDGEMENTS
REFERENCES
