Correlation between Specific Gravity, Water Absorption and other Physical Properties of Different Coarse Aggregates

Concrete is the chief construction material used across the world and plays an important role in the development of a country. It is used in all types of civil engineering works, including infrastructure, low and high-rise buildings, defense installations, environment protection and local/domestic developments. Concrete is essentially composed of cement, coarse & fine aggregates, water and admixture(s). Among these, coarse aggregate is the major part in concrete. Generally, the coarse aggregate is treated as an inert material and only its physical properties like shape, size, water absorption and specific gravity are studied. Whereas, as we increase the quality of mortar mix, the strength of coarse aggregate also comes into picture. In this paper, all physical properties are discussed namely Specific Gravity, Aggregate Impact value (%), Aggregate Abrasion Loss (%), Aggregate crushing Value(%), Soundness Loss(%) 5 cycles in Na2SO4 solution and Water Absorption (%) tests. Specific gravity or relative density of coarse aggregate effect all other properties to some extent. Different correlations have been developed between specific gravity, water absorption and other physical properties in this paper.