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Experimental study was carried out to investigate the mechanical properties of recycled
aggregate concrete prepared with recycled aggregates obtained from local precast concrete industry
and the findings of this study are presented in this paper. Five different concrete mixtures were
prepared: one control mixture containing only natural aggregates and four mixtures of recycled
aggregate concrete (RAC) containing natural and recycled aggregates at 25%, 50%, 75% and 100%
replacement levels of natural aggregates. The results of mechanical tests such as compressive
strength, modulus of elasticity, Load versus CMOD response, fracture energy in tension and
compression are presented. The results indicate that at 25% replacement level, mechanical properties
of RAC are almost similar to that of control concrete mix, however, mechanical properties of RAC are
degraded when natural aggregates are replaced with recycled aggregates at replacement level
greater than 25% and degradation is increased with the increase of replacement level
M. Rizwan Riaz, Rashid Hameed, Muhammad Ilyas, Affifa Akram, Zahid A. Siddiqi. (2015) Mechanical Characterization of Recycled Aggregate Concrete, Pakistan Journal of Engineering and Applied Sciences, VOLUME 16, Issue 1.
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