Effect of Partial Replacement of Slag and Nano Silica Infused Slag on Properties of Concrete
Prakash Mallappa Munnoli1 , Tejashwini R. Pattar2 , Jyoti S. Garawad3 1,2,3S D M College of Engineering and Technology, Dharwad E-mail: munnolipm@gmail.com Abstract: Investigations were carried out on the changes in properties of concrete when steel slag is used in concrete in its normal form and after modifying its properties by infusing it with nano silica. The sand is replaced by steel slag and modified steel slag by 10%, 20% and 30% in M30 grade concrete. Tests results on compressive strength and workability of concrete revealed that, compressive strength of concrete cubes after 28 days increased by 25.4%, 26.4% and 45.2% for 10%, 20% and 30% respectively after replacing sand by steel slag. After modification of steel slag properties by infusing it with nano silica, the 28 days compressive strength was observed to be increased by 38.19%, 35.80% and 27.89% for 10%, 20% and 30% as compared to traditional concrete mix respectively after replacement. Infusing steel slag wit...