Performance of Coconut shell as Coarse Aggregate in Concrete thesis

Depletion of natural resources is a common phenomenon in developing nations like India due to rapid urbanization and Industrialization involving construction of Infrastructure and other conveniences. In prospect of this, people have begun researching for suitable other viable alternative materials for concrete so that the existing natural resources could be preserved to the possible extent, for the future generation. Lately, on the environmental issues, restrictions on local & natural access or sources and dispose of waste material are gaining great importance. Aggregate is a major ingredient for making concrete, occupy almost 70-80% part of concrete. The roles of structural grade lightweight concrete reduce considerably the self-load of a structure and permit larger precast units to be managed. Coconut Shell is a waste from the agrarian sector and is used in large quantities in the tropical areas. The waste coconut shell may be utilized to replace natural coarse aggregate. In this study, M 20 grade of concrete was produced by replacing natural coarse aggregates at 0%, 5%, 10%, 20%, 30%, 40% and 50% by weight with waste coconut shell. In all total Sixty Three (63) cubes were casted and their compressive strength was evaluated at 7, 14 and 28 days. The compressive strength of concrete was reduced as the percentage replacement increased. Concrete mixtures were tested and compared in terms of compressive strength of the conventional concrete at 28 days. The results showed that Coconut Shell Concrete (CSC) can be used in light weight concrete construction. Utilization of Coconut Shell will not only be cost effective and Eco friendly, but also resolve the issues related to shortage of conventional material and problem of disposal of waste material.

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