In compressive strength loss for acid attacked specimens at
84 days, we could find that there was more loss in compressive
strength for the specimens with less amount of rubber. As the
amount of crumb rubber was increased in concrete, the percentage
of loss has gradually decreased. The crumb rubber particles present
in the rubberized concrete was holding the constituent particles of the concrete from breaking away by preventing the formation of
cracks and material separation. While in the concrete with no
crumb rubber or less amount of crumb rubber, more cracks were
developed and the constituent materials were easily separated.