Abstract
A sea animal creates a hard, protective outer layer called a seashell. Empty seashells frequently wash ashore, and beachcombers find them. This marine byproduct can be used in concrete as a replacement for cement or aggregate. This study describes the use of seashell products as a partial substitute for cement and coarse aggregate in the production of sustainable concrete to evaluate the durability characteristic of concrete. Various percentages of seashell trash were substituted for the cement and coarse aggregate by weight of the concrete. Water absorption, sorptivity and rapid chloride permeability on the seashell concrete were performed experimentally. Additionally, sulphate and alkaline attack as marine environment were studied for seashell concrete specimens immersed in chemical solution for 90 days. The seashell concrete's durability traits were contrasted with those of a control specimen. It is concluded that the optimum percentage of replacement of cement and coarse aggregate by seashell powder (SP) and seashell aggregate (SA) are 10% and 20% respectively to obtain durable concrete.
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