Load-Deflection Relationship of Beams Incorporating Aggregates from Demolished Concrete Blocks
DOI:
https://doi.org/10.23918/eajse.v11i3p15Keywords:
One Way Slab, Recycled Concrete Aggregate, Structural Behavior, SustainabilityAbstract
This work investigates the load-deflection behavior of sustainable reinforced concrete wide beams with aggregates that are recycled from demolished concrete blocks. These recycled concrete aggregates RCA have been used with percentages (0%, 25%, 50%, and 100%) of replacement with normal aggregates. Superplasticizer doses were applied to keep the workability constant. Compressive strengths were kept around 35 MPa for better comparison. Four wide beams of (300×60×700mm) dimension were cast with concrete having a minimum steel reinforcement ratio allowed by the ACI 318 code. Curves of wide beams relating load to deflections were constructed. The ductility of these beams was recorded. The response of RCA beams to increasing load is comparable to that of normal beams, however little softer but with comparable ductility. The findings of this work provide further support for using the RCA in structural concrete.
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