AN EXPERIMENTAL STUDY ON STRENGTH OF CONCRETE BY PARTIAL REPLACEMENT OF FINE AGGREGATE WITH P SAND

Concrete is a composite material composed of both coarse and fine aggregates (River sand is considered as one of the most used fine aggregate in the world, but with the expansion of the Construction scale of our country, the shortage of river sand resources is becoming more prominent. The P-SAND, it can ease the shortage of river sand and avoid excessive sand mining which can bring ecological environment problems. The composition of sand is highly variable, depending on the local rock sources and conditions. P-SAND is used for plastering and creating renders both internally and externally, its fine particles of plastering sand creates a very smooth and even surface. The P-SAND contains natural sand, crushed stone sand or a combination of any of these. The sand will be hard, durable, clean and free from adherent coating and organic matter and shall not contain clay, silt and dust more than specified. So the strength and properties of the P-SAND is tested before it is utilized in this project. The river sand (fine aggregate) is replaced by sea sand in terms of 100% and 50%. Another test is carried out with replacing river sand with sea sand along with GGBS as coarse aggregate and then several tests were carried out to check its durability. The test results found that it is more significant to use sea sand by partially replacing with river sand.