Analysis of Effect of Ground Granulated Blast Furnace Slag (GGBFS) on the Mechanical Properties of Concrete using Destructive and Non-destructive Tests

Authors:

Tarun Yadav,Jatin Singh,Sandeep Panchal,Md. Mohsin Khan,Shilpa Pal,

DOI NO:

https://doi.org/10.26782/jmcms.2019.02.00006

Keywords:

GGBFS,waste management,concrete,flexural strength,compression strength ,

Abstract

Ground granulated furnace slag is a waste material which is rich in Calcium. Aim of this study is to observe the effect of mixing of ground granulated blast furnace slag as a replacement of cement in concrete. The study is conducted on M-30 grade concrete. The cement is replaced partially by the ground granulated blast furnace slag to obtain a cost-effective mix. The concrete mixes are prepared by replacing the cement by 15%, 30%, 45%, 60% and 75 % ground granulated blast furnace slag. The tests are performed to know the compressive strength, flexural strength and workability of concrete. Non-destructive tests like rebound hammer test and ultrasonic pulse velocity tests are also performed to understand the post hardening characteristics of the concrete. It is found that the replacement of cement GGBFS reduces the initial strength of concrete but increases the ultimate strength if mixed in optimum amount. The optimum percentage of ground granulated furnace slag in M-30 concrete is found to be 45%. The workability increases as the amount of GGBFS is increased in the mix. The post hardening tests show the better performance of concrete at 30% and 45% mixing of GGBFS in concrete.

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Tarun Yadav, Jatin Singh, Sandeep Panchal, Md. Mohsin Khan, Shilpa Pal View Download