A Comparative Analysis: River Sand vs. Sea Sand in Concrete Performance

Abstract

River sand is broadly used in the building industry, River sand has been the most used fine aggregate in the construction industry, but its excessive extraction has caused environmental issues and meeting the demand has resulted in several negative repercussions, including increased riverbed depth, a lower water table, and saline intrusion into rivers. As a result, there was an instant demand for substitutes for river sand, such as manufactured sand. An experiment is undertaken to test the strength and durability of cement concrete of M20 grade after partially replacing sea sand with river sand as fine aggregate. This compares the material properties of sea sand (SS) and river sand(RS).
Cement concrete blocks were evaluated for compressive strength after 7, 14, and 28 days of curing, with partial substitution of sea sand with river sand at intervals of 0%, 25%, 50%, 75%, and 100%. Concrete blocks were tested. Where the compressive and flexural strength values compiled for replacement (RS+SS) were tabulated and graphs are plotted to show compressive strength versus curing period.
Corrosion Test When performed on a concrete prism to detect the presence of these chlorides, the concrete may be damaged by modifying the time of set, increasing drying shrinkage, significantly increasing the risk of steel reinforcing corrosion, and causing efflorescence.
The compressive and flexural strength of a 50% substitution of sea sand with river sand is comparable to conventional concrete. There is little effect of corrosion on sea sand concrete.