ABSTRACT
The potential for using construction and demolition waste (C&DW) derived aggregate in the
manufacture of concrete paving blocks is being investigated at the University of Liverpool. Market research indicated that economic benefits might be achieved by using recycled demolition aggregates in precast concrete paving products. The mechanical properties, i.e., compressive and tensile splitting strength, of paving blocks made with recycled demolition aggregates were also investigated. Levels of aggregate replacement were determined that produced blocks with similar mechanical properties to those of blocks made using only natural aggregates, without requiring an increase in the cement content.
