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MECHANICAL AND DURABILITY PROPERTIES OF SELF COMPACTING CONCRETE BY UTILIZATION OF HYBRID FIBERS

Abstract

Self compacting concrete is a non segregate concrete that is placed by means of its own weight. It is well flow able concrete that can spread without need of tremor. In this study steel and polypropylene fiber are used as hybrid fiber to develop the workability of the concrete. The addition of CONPLAST SP 430 is used as a chemical admixture which is added to SCC by the volume of 2% of cement. These components like hybrid fiber and super plasticizer are added to the concrete to build up the better strength and durability of self compacting concrete. In this study, the various mix proportions of fibers discussed in this study are 0%, 0.25%, 0.5%, 0.75%, 1%, 1.5% resolute by preliminary test on self compacted materials. By this preferred compositions test for fresh concrete such as slump flow, L-box and V-funnel, U box, J ring are performed for SCC. It is found that compression and split tensile strength has been enhanced by the addition of hybrid fibers at 1% respectively. This investigational study is carried out to improve the compressive, split tensile strength and flexural strength in SCC for obtaining the optimum value. The Durability tests to be carried out at the age of 7 and 28 days.

Author

Ms. S. Janani a, Ms. U. Karunya b, Mr. P. Karthick c
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