Modification in Self-Compacting Concrete

Abstract

Self-compacting concrete (SCC) is a concrete that does not require vibration for placing and compaction. In plastic state it is able to flow under its own weight, completely filling formwork and achieving full compaction, without any segregation and maintaining its homogeneity even in the presence of congested reinforcement and can flow through all shapes and obstructions. The hardened concrete is dense, homogeneous and has almost the same engineering properties and durability as normal concrete. By adding Polypropylene fibre, Polyester fibre. Glass fibre .Fibres arrests shrinkage cracks and increases resistance to water penetration, abrasion and impact. It makes concrete homogeneous and also increases compressive behaviour, ductility and flexural strength together with improving a structure‟s ability to absorb more energy the super plasticizer and viscosity modifying agent are added in Self compacted concrete. Test on fresh concrete is slump spread for all trial mixes. The mix that has the largest slump spread is tested with V-funnel, L-shaped box and U-shaped box Conventional specimens are also prepared for M20.By conducting tests for the specimens the properties of concrete will be investigate. This study ensures that using of fibre as substitutes in concrete gives a good approach to reduce cost of materials and will accomplish the better properties of self-compacted concrete at all ages.