Mechanical and Durability Properties of Concrete Using Dredged Marine Sand

Abstract

This paper reports an experimental investigation on the mechanical and durability properties of concrete using dredged marine sand (DMS). Two sources of DMS were used and the influence of water treatment prior to mixing concrete was studied. Compressive strength, tensile strength and elastic modulus of concrete with DMS were evaluated and compared with concrete made of river sand. The corrosion performance of reinforced concrete using sea dredged aggregate was examined by half-cell potential test. The results showed that the grading of DMS is suitable for concrete production. The compressive strength values of concrete specimens made with DMS are slightly higher than that of concrete made with RS. The water cleaning method is effective to minimize the chance of steel corrosion by reducing the chloride content in DMS aggregates. The results from half-cell potential test indicated that the potential values of specimens with DMS are comparable to that of specimens with RS and hence the possibility of corrosion is low. The study revealed that DMS soon after washing, could be used as an alternative to river sand.