• Sanjeev Kumar Suman
• Vikash Kumar Badal
• Puja

- Concrete is the most versatile construction material because it can be designed to withstand the harshest environments while taking on the most inspirational forms. To improve its performance with the help of different admixtures and supplementary cementitious materials. then, most concrete mixture contains supplementary cementitious material. These materials are majority byproducts from other processes These materials are larger part side-effects from different cycles in which can be used as SCMs such as fly ash, silica fume, ground granulated blast furnace slag, steel slag etc. The use of these byproducts not only helps to utilize these waste materials but also enhances the properties of concrete in fresh and hydrated states. Slag cement and fly ash are the two most common SCMs used in concrete. Slag cement and fly ash are the two most common SCM’s used in concrete, their properties are frequently compared to each other by mix designers seeking to optimize concrete mixtures. Fly ash cement and their blend (in 1:1 proportion). These binder mixes are modified by 10% and 20% of silica fume in replacement. The fine aggregate used is natural sand comply to zone II as per IS 383-1982.The coarse aggregate used is steel making slag of 20 mm down size. To mixed in 1: 1.5: 3 proportions. The porosity and capillary test conducted on mortar mixes show decrease in capillary absorption and porosity with increase in silica fume percentage with both type of cements. The properties studied in 7days, 28days and 56 days compressive strengths the slump is kept between 50-70 mm, The mortar strength increases with the increasing percentage of silica fume. Comparatively higher early strength gain (7-days) is obtained with fly ash cement strength (28 days) gain is obtained with slag cement. However, concrete exhibits the opposite trend, with studies indicating a reduction in the compressive strength of concrete after 7 days, 28 days, and 56 days as a result of the addition of silica fume to the matrix.

Steel slag, Silica fume, Fly ash, Compressive Strength, Concrete,

"“STUDY ON THE EFFECT OF SILICA FUME IN STEEL SLAG CONCRETE”", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 10, page no.e63-e67, October-2023, Available :http://www.jetir.org/papers/JETIR2310321.pdf

"“STUDY ON THE EFFECT OF SILICA FUME IN STEEL SLAG CONCRETE”", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 10, page no. ppe63-e67, October-2023, Available at : http://www.jetir.org/papers/JETIR2310321.pdf