shows compressive strength of the PP fibre reinforced concrete cylinders. As can be seen, the addition of fibres does not have significant effects on the compressive strength. Due to relatively low dosage of fibres (4 kg/m3) in the concrete matrix, the compressive strength of concrete was not influenced by the presence of fibres [48]. This is because only at large fibre dosages (i.e. 13–18 kg/m3), improper distribution of fibres can cause balling of fibres and air voids, adversely affecting compressive strength of concrete [26]. This result correlates with the findings of many scientists [26], [49], [50] and [51], who reported no prominent changes in compressive strength with the addition of PP fibres. Moreover, Fig. 7 shows that all the recycled fibre reinforced concrete cylinders had comparable compressive strength when compared to virgin fibre reinforced concrete. It should also be worth mentioning that during the compression tests, the plain concrete failed catastrophically with large single crack at the peak load. The PP fibre reinforced concrete cylinders failed with many minor cracks on the surface, and the cracked cylinders still held together, showing a more ductile mode of failure.