Variation in particle size distribution from primary crushing of demolition waste

OI Ogwuda, J Underwood, D FORDYCE

Research output: Chapter in Book/Report/Conference proceedingConference contribution


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.
Original languageEnglish
Title of host publicationSustainable Construction: Use of Recycled Concrete Aggregate
Subtitle of host publicationProceedings of the International Symposium organised by the Concrete Technology Unit, University of Dundee
PublisherThomas Telford Ltd.
Number of pages12
ISBN (Print)0-7277-2726-5
Publication statusPublished - 1998


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