Mechanical Behavior of Concrete with Recycled Coarse Aggregates
DOI:
https://doi.org/10.20868/ade.2026.5711Keywords:
Concrete, Recycled aggregates, RCA, Comp`ression, FlexureAbstract
This study evaluates the mechanical behavior of concrete produced with partial replacement of natural coarse aggregate by recycled concrete aggregate (RAC) at substitution levels of 20% and 40%, with the aim of identifying mix configurations that optimize and enhance the structural performance of the material. Various concrete mix designs incorporating construction and demolition waste (RCD) as partial replacements for natural aggregates were analyzed, assessing their behavior in both fresh and hardened states.
The results indicate a reduction in material weight of 8.94% and 21.65% for 20% and 40% CDW substitutions, respectively.
Compressive strength showed significant improvements, reaching increases of 25.96% for the 20% CDW mixture and 28.80% for the 40% CDW mixture, demonstrating an efficient structural contribution of recycled aggregates. Furthermore, flexural tests revealed remarkable enhancements, with increases of 73.45% and 25.14%, respectively, consolidating flexural performance as one of the most favorable outcomes of the study.
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