The mean compressive strength of concrete using 5% and 15% GRP waste powder without additives under water curing attained 37 N/mm2 and 34 N/mm2 respectively.
Application of 30% and 50% GRP waste powder in concrete attained 29.5 N/mm2 and 19 N/mm2 compressive strength respectively.
Increased proportions of GRP waste in concrete decreased the density (12%) and the minimum density was 2140 kg/m3 with 50% GRP waste powder.