Pebble Sand (P-Sand) as a Partial Replacement for Fine Aggregate in Concrete.

Fine aggregate plays a vital role in the composition of both concrete and mortar in construction work. Excessive utilization of river sand as fine aggregate in building construction aggravates environmental degradation and underscores the need for alternate sources in the context of sustainable construction. The paper focuses on the use of crushed pebbles as a partial replacement for fine aggregate in the production of concrete. Fine aggregate was replaced partially by Pebble Sand (P-sand) in different proportions (20%, 30%, 40% and 50%) by the weight of fine aggregate in M30 grade of concrete. An experimental investigation was carried out to evaluate the mechanical (compressive, flexural and modulus of elasticity) properties of concrete with P-sand as a partial replacement for fine aggregate. The results indicate that the specimen casted with 40% replacement of P-sand to fine aggregate gave higher strength when compared to conventional concrete. [ABSTRACT FROM AUTHOR]