Abstract:
The process of rubber decomposition is extremely slow and time consuming, the disposal of
wasted tire causes environmental issue and is very dangerous for public health. The addition of
wasted rubber to make green concrete is beneficial to the environment. The aim of this research is
to check flexural behavior of eco-friendly rubberized concrete. Five different mixes were made in
which one mix contained no replacement of sand whereas four mixes were made by substituting
(5%, 10%, 15%, and 20%) of sand by volume with rubber. The compressive strength and flexural
strength and their load deflection curves were examined. The trend showed reduction in the
compressive strength with huge reduction at higher percentages of rubber. The flexural strength
tests were performed and the trend in the strength was towards reduction but there was slight
reduction in the strength as the percentage of rubber was increased. Whereas ductility and failure
mode under flexural loading was improved in specimens in which rubber was used and as the
percentage of rubber was increasing the ductility was increased. The outcome of this novel
approach of rubber addition provides an overview about the effect of rubber on the flexural
strength of concrete and its correlation with compressive strength of normal strength rubberized
concrete.
