The particle size analysis and morphological studies showed that the GRP waste powder particles were of varying in size and irregular in shape. The particle size distribution of GRP waste powder sample is shown in Fig. 3a. Results from the particle size analysis revealed that 50% of the GRP waste powder particles were below 18 lm and almost 90% of the GRP waste powder particles were below 63 lm. The specific surface area of GRP waste particles varied from 0.532 m2/g to 0.961 m2/g