Utilisation of Crushed Interlock as Coarse Aggregate in Concrete

The aim of this research was to create eco-friendly forms of concrete by using recycled aggregates (RA) from construction sites to replace natural aggregates (NA). The study involved multiple levels of using coarse crushed materials as a substitute for gravel. This study focused on determine how the use of interlock waste crushed into RA would affect the physical/mechanical properties of Concrete when replacing coarse NA. Four different levels of weight were tested at a 25%/50%/75% and 100%, respectively. The physical properties were evaluated using slump testing, water absorption testing and dry density measurements while the mechanical properties were evaluated using flexural strength testing, compressive strength testing, and splitting tensile strength testing. For all specimens, all three types of the specimens were monitored for 28 days. Results indicated the influence of RA on the physical/mechanical performance of all tested specimens.