This study investigates the engineering properties of demolished concrete aggregates wastes along
Arakale Road, Akure. The purpose is to recycle and reduce the amount of construction wastes materials going
into landfills and dumping pits. The study identifies about 15% to 20% of construction waste materials go into
landfill and dumping pits in Akure. Four different mixes at 0.5, 0.55, 0.60 and 0.65 water/cement ratios were
performed and a total of 96 (48 each) concrete cube samples were cast, cured and crushed. The results showed
that at lower percentage water/cement ratios, the compressive strength of used aggregates at day 28 were much
lower than virgin aggregates (16.89N/mm2
, 19.93N/mm2
) while at higher percentage water/cement ratios, the
compressive strength of used aggregates at day 28 was almost the same as Virgin aggregates (18.07, 18.37). It
shows that the used aggregates can attain the same compressive strength as virgin aggregates at higher
water/cement ratios.