Abstract
The research work reported was carried out in 1987 as part of a four-year programme sponsored in part by the Institute of Demolition Engineers on the recycling of demolition debris. The physical and mechanical properties of crushed concrete and demolition debris from a variety of sources were examined to assess the suitability of these aggregates for use as granular sub-base materials. In particular, sieve analyses and compacted density tests were conducted, during the construction of a road in Portsmouth, to compare the use of crushed concrete and limestone as the upper part of the capping layer. The authors review recent research on the recycling of crushed aggregates, examining their physical and mechanical properties and gauging their suitability as sub-base materials for roads.