This Concrete is a construction material which is used worldwide. Its utilization is increasing at a higher rate due to infrastructural
development. Increasing production in concrete results in some negative impact on nature such as extensive extraction of aggregates
from natural resources. Thus it is important to find out an alternative to replace aggregates. Coconut shell is an agricultural waste
which is readily available. The shells are non-biodegradable, so that it can be readily added to concrete. From various studies it is
observed that replacing 15% of coconut shell (CS) gives the optimum value.