Performance of Coral Aggregate on Mechanical and Durability Properties of Concrete - A Review

Abstract

Coral concrete is a type of aggregate and is generally light and porous, with rough surface, little adherence to the attachments and high concentration of sea salts. Coral concretes are mainly required in the Construction of offshore structures. This types of aggregate complies low grade of strengths, little corrosive resistance and is highly brittle. These features influences the workability, mechanical properties, and durability properties of developed concrete. The objective is to analyse the performance of coral aggregate on workability, mechanical and durability properties such as (shrinkage, chloride) of concrete. In this backdrop, this paper gives an account of properties of low stability hydrated products of the Portland cement under sea condition, low strength and stiffness of coral aggregates having large connected porosity with weak interface microstructure between the cement matrix and coral aggregates. Keywords: Coral aggregate, Physical & Chemical Properties, Strength, Durability properties.