Abstract:
Crushed concrete waste is a by-product from building demolition and constitutes a principal component of
municipal solid waste consisting of concrete, sand, brick, rock, metals and timber. Over 50% of this waste is
commonly sent to land-filled sites, resulting in the impact on the limited capacity of land-filled sites. Nowadays,
the sources of virgin natural aggregates are depleted by increasing in demand of using a virgin material in
building and infrastructure construction and maintenance facilities. This depletion leads to the utilisation of
crushed concrete waste to replace natural aggregates in road and highway construction. Of key significance of
this study is to present alternative materials for road and highway construction on the production of the proper
guideline for road base by using crushed concrete waste. Sophisticated tests were conducted to investigate the
mechanical responses of compacted crushed concrete subjected to applied loads simulated from traffic loads.
Unconfined compressive strength, shear strength parameters, resilient modulus and permanent deformation of
such material were determined. Our findings showed that crushed concrete waste is able to utilise as a road base
material. The results of this study will enhance increased use of crushed concrete waste in road and highway
construction and will, therefore, alternatively reduce consumption and costs in manufacturing virgin aggregates.
