Study of Self Compaction with Recorn 3s Fibre at Different Elevated Temperatures

Abstract

Self-compacting concrete (SCC) is an innovative concrete that does not require vibration for placing and compaction. It is able to flow under its own weight, completely filling formwork and achieving full compaction, even in the presence of congested reinforcement. The hardened concrete is dense, homogeneous and has the same engineering properties and durability as traditional vibrated concrete. Self compacting concrete (SCC) was first developed in 1988 in Japan to achieve durable concrete structures. As SCC has various advantages over normal concrete, it also having leakage problems and shrinkage problems. Therefore, in this dissertation work emphasis has been laid to utilize the fibers in the concrete using3s recon (polypropylene) fiber 0,0.1,0.2,0.3,0.4%. Fibers are usually used in concrete to control cracking due to plastic shrinkage and to drying shrinkage. They also reduce the permeability of concrete and thus reduce bleeding of water. the grade of concrete is M35 and efnarc code book, tested and compared in terms of compressive strength and split tensile to the SCC concrete. These tests were carried out to evaluate the properties for 7, 14,28and 90 days. The moulds prepared are as follows 150mm X 150mm X 150mm cubes and cylinders 300mmX150mm at elevated temperatures is 0,200,250,350 degrees. Some types of fibres produce greater impact, abrasion, and shatter–resistance in concrete. Generally fibres do not increase the flexural strength of concrete and so cannot replace moment–resisting or structural steel reinforcement. Indeed, some fibres actually reduce the strength of concrete.