Advances in Concrete Construction, Vol. 6, No. 6 (2018) 611-629 DOI: https://doi.org/10.12989/acc.2018.6.6.611 611 Copyright © 2018 Techno-Press, Ltd. http://www.techno-press.org/?journal=acc&subpage=7 ISSN: 2287-5301 (Print), 2287-531X (Online) Influence of granulated blast furnace slag as fine aggregate on properties of cement mortar Rakesh Kumar Patra 1a and Bibhuti Bhusan Mukharjee 2 1 Department of Civil Engineering, Indian Institute of Technology Roorkee, India 2 Department of Civil Engineering, Biju Patnaik University of Technology, Rourkela, Odisha, India (Received November 25, 2017, Revised November 3, 2018, Accepted November 8, 2018) Abstract. The objective of present study is to investigate the effect of granulated blast furnace slag (GBS) as partial substitution of natural sand on behaviour of cement mortar. For this, the methods of factorial design with water cement (w/c) ratio and incorporation percentages of GBS as replacement of natural fine aggregate i.e., GBS(%) as factors are followed. The levels of factor w/c ratio are fixed at 0.4, 0.45, and 0.5 and the levels of factor GBS(%) are kept fixed as 0%, 20%, 40%, 60%, 80% and 100%. The compressive strength (CS) of mortar after 3, 7, 14, 28, 56 and 90 days, and water absorption (WA) are chosen as responses of the study. Analysis of variance (ANOVA) of experimental results has been carried out and those are illustrated by ANOVA tables, main effect and interaction plots. The results of study depict that the selected factors have substantial influence on the strength and WA of mortar. However, the interaction of factors has no substantial impact on CS and WA of mixes. Keywords: ANOVA; granulated blast furnace slag; compressive strength; water absorption 1. Introduction Utilisation of various industrial waste products as replacement of natural aggregates provides several sustainable benefits like preservation of sources of natural aggregates, reduction of landfills, conservation of energy and reduction in the rate of emission of greenhouse gases (Topçu and Boğa 2010, Mukharjee and Barai 2015a, Ambily et al. 2015, Lee et al. 2016). With vast increase in the use of concrete for construction work, several parts of world are facing acute shortage of natural aggregates. Furthermore, a number of environmental problems such as sliding of river banks, loss of water retaining sand strata, lowering of river courses, lowering of the ground water table, loss of aquatic life and disturbance on the agriculture process are caused due to the increase in the extraction of natural sands from the river bed. Therefore, researchers have been trying to utilise aggregates retrieved from various industrial waste products, construction demolition waste and agricultural waste for making concrete (Kehagia 2009, Chithra et al. 2016, Mukharjee and Barai 2015b, Kockal 2016, Ding et al. 2017, dos Anjos et al. 2017). The molten form of slag collected from blast furnace of iron and steel industry is of molten form, which is Corresponding author, Associate Professor, E-mail: [email protected] a Research Scholar, E-mail: [email protected]
Influence of granulated blast furnace slag as fine aggregate on properties of cement mortar
Apr 25, 2023
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