Recycling and reuse of reclaimed Portland cement concrete aggregate
Keywords:Reclaimed, landfills, Penetrability, Demolished wastes, workability, compressive strength, recycled concrete, coarse aggregate.
The purpose of this research was to study the behaviour of RPCC aggregates in Portland cement concrete and embankment. For the first case, several batches of concrete were prepared with RPCC aggregate, natural aggregate, different water cement ratio (WCR) and different maximum size of the aggregate. Standard tests were performed on RPCC and natural aggregates, concrete made with recycled and natural aggregate, including specific gravity and absorption, slump and compression tests. For the second case, shear tests were performed on RPCC aggregate to obtain the failure envelope and the friction angle. RPCC material can develop a high friction angle at failure, making this material highly recommended for use in embankments. Moreover, RPCC aggregate can be mixed with a material of lower quality, making its use more economically attractive.