Parametric Study on Concrete by Partial Replacement of Aggregates with Sea Shells and Coconut Shells

Abstract

Use of sea shells and coconut shells in concrete has attracted widespread attention from construction industry due to
the multiple sustainability benefits they offer. This paper critically reviews the current state of knowledge and technology of using
sea shells and coconut shells to concrete. Detailed review on the various preparation techniques and the resulting properties of sea
shells and coconut shells are presented and the effects of sea shells and coconut shells on the fresh and hardened concrete
properties are discussed in this paper. The effect of sea shells and coconut shells on workability, plastic shrinkage, and
compressive strength, splitting tensile strength, flexural strength, crack behavior and dry shrinkage is discussed in this paper. Pullout behavior of the coconut shell in the concrete are also reviewed. Finally, some applications of the sea shells and coconut shells
concrete are discussed.