An Effect on Oyster Shell Powder’s Mechanical Properties in Self Compacting Concrete

Self – compacting concrete (SCC) is a high – performance concrete that can flow under its own weight to completely fill the form work and self-consolidate without any mechanical vibration. Such concrete an accelerate the placement, reduce the labor requirements needed for consolidation, finishing and eliminate environmental pollution. Oyster shell were collected from river and sea & it produced to powder from In this study, pozzolonic replaced with various percentages by oyster shell powder and the fresh and hardened properties of cement concrete were studied. In this study, cement content in the SCC mix is replaced with various percentage of 0%,.2.5%,5%,7.5%,10% and 20% of oyster (River and Sea) shell powder is used and the fresh and hardened properties of cement concrete were studied. It is observed that can be effectively used as a mineral additive in SCC. The Mix Design for concrete M25 grade is being done as per the Indian Standard Code IS: 10262-2009.Specimens (cube &cylinders) were cast to study the strength properties such as compressive strength (3, 7 , 14 and 28 days), split tensile strength (28 days), Flexural Strength (28 days) and durability aspects such as water absorption (28 days). Water Binder ratio was maintained at 0.40. Test results was indicate that concrete containing oyster shell power to an extent of 5% shows better strength characteristics when compared to the concrete with 0% of oyster shell power, whereas concrete with oyster shell power of 5% replacement shows optimum results better durability characteristics than the other percentage replacements of oyster shell power.