An Investigation Study on Strength & Cost Analysis of Self Compacting Concrete by Using Ggbs.

Abstract

Concrete is a family of binding material, fine aggregate, coarse aggregate, and water. Concrete is normally used in the frame structure. But there is some limitation like self-compaction, surface finishes, maintains strength at the congested area. Due to this limitation, we are trying to make self- compacting concrete with the use of mineral admixture. SCC is concrete that can be placed and compacted under its own weight with minimum vibration effort, assuring complete filling of formwork even when access is hindered by narrow gaps between reinforcement bars. The primary objective of this study is to make use of Ground Granulated Blast furnace Slag (GGBS) as a replacement of cement and understand its effects on the fresh properties, compressive strength weathering. The present study intended to quantify the amount of Ground Granulated Blast furnace Slag (GGBS) to be added to the concrete according to the value of concrete properties measured. The workability of self-compacted concrete is increased as the content of GGBS increased. The compressive strength of SCC with GGBS is increased up to 30% replacement of cement with (gradual % increase % interval) GGBS.  The usage of mineral admixtures in the production of SCC not only provides economic benefits but also reduces the heat of hydration (EFNARC guidelines 2002).  It is also known that some mineral admixtures may improve rheological properties and reduce thermally-induced cracking of concrete due to the reduction in the overall heat of hydration, and increase the workability and long-term properties of concrete (Recommendation for Construction of Self Compacting Concrete 1998). There is no standardized mix proportion for designing SCC, hence in this work, the Indian standard method of mix design is adopted with Ground Granulated Blast furnace Slag (GGBS) for partial replacement of cement. Further, a comparison of the self-compatibility properties and hardened properties like Compressive Strength, Split Tensile Strength and Flexural Strength for GGBS based SCC, and SF based SCC is made.