Experimental Investigation on Concrete by Replacing Natural Coarse Aggregate Partially with Recycled Coarse Aggregate (RCA) & Addition of Natural Coir Fibres

Salahuddin Shakeeb, Sd Farhanuddin, Shaik Sameer, Irfanullah Khan
International Research Journal of Engineering and Technology (IRJET)   unpublished
This thesis aims to find the possibility of the structural usage of recycled aggregate concrete in lieu or mixed with natural aggregates along with addition of natural coir fibres, based on better understanding of behavior of recycled aggregate with coir fibre in concrete structures. To identify the effects on workability and mechanical strength properties due to the addition of these recycled coarse aggregate and coir fibres, workability tests such as slump test, and the mechanical strength
more » ... hanical strength tests on standard specimens such as compressive strength and split tensile strength were conducted on the different ratios. The standard cubes and cylinders for conventional concrete were prepared and tested under compressive and tensile loads. Based on the experimental results of workability and mechanical strength studies, a constant length of 50 mm of coir fibre and diameter 0.34, 1% by weight of cement were used along with varying percentages of recycled coarse aggregate as 0%. 10%, 20%, 30%, 40%. It is found that by replacing 20 % natural aggregate by recycled aggregate, the compressive strength and tensile strength yielded best results. It has been noticed that a increase of 24% and 8% of compressive strength and tensile strength has been noticed respectively.
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