Browsing by Author "Hemalatha, T."

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    Partial replacement of steel slag aggregates in concrete as fine aggregates (induction blast furnace slag)
    (Springer, 2019) Sundaramoorthi, S.; Hemalatha, T.; C, C.
    In this study, an attempt has been made to investigate the effect of partial replacement of conventional river sand with steel slag aggregate. The replacement of river sand by slag aggregate provides dual advantage of reducing disposal problems in steel industries and conserving the natural resources. In this study, slag aggregate originated from induction blast furnace has been used. The physical and chemical properties of slag aggregate evidenced the feasibility of using this material as a substitute for river sand. Total of three mixes made with Ordinary Portland Cement (OPC), cement replaced with fly ash and river sand replaced with slag aggregate have been considered for this study. The mix is designed for M40 grade. First mix (Control mix 0M0) made of OPC as a binder and 100% river sand, second mix (0M50) made of OPC and 50% slag aggregate and third mix (25M50) made of 25% OPC replaced by fly ash and 50% river sand replaced by slag aggregate. Mechanical and durability properties of all the three concretes are studied. It is found that the strength results of 0M0 and 0M50 are comparable indicating the suitability of using slag aggregate as an alternative for river sand. However, the third mix with fly ash replacement in binder showed reduced strength in comparison with control concrete. Hence, it is concluded that when slag aggregate is used as a partial replacement for river sand (50%), it is advisable to use OPC than the Pozzolanic Portland Cement (PPC). © Springer Nature Singapore Pte Ltd. 2019.
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    PERFORMANCE ASSESSMENT OF STEEL SLAG AGGREGATES AS PARTIAL REPLACEMENT OF RIVER SAND IN CONCRETE
    (Associated Cement Companies Ltd., 2023) Sundaramoorthi, S.; Hemalatha, T.; C, C.
    In order to bring sustainability in construction, nowadays, many industrial solid wastes are used as a partial replacement for cement as well as aggregates. Using industrial wastes in construction solves dual problem of waste disposal and depletion of natural resources. Steel aggregate is one such industrial solid waste having potential to replace the conventional river sand. In this study, an attempt has been made to investigate the performance of steel slag aggregates in concrete as a partial replacement for conventional river sand. Three mixes were made for this study, first mix made of ordinary Portland cement (OPC) and 100 % river sand (0M0), second mix (0M50) made of OPC and 50 % river sand replaced by slag aggregates and third mix (25M50) made of 25 % fly ash and 75 % OPC, and 50 % slag aggregates. Tests for assessing the mechanical and durability properties were conducted. The results showed that the strength and durability of concrete made with steel slag aggregate and river sand were comparable. This study shows the suitability of using 50% steel slag aggregates as a partial replacement for river sand in concrete. © 2023, Associated Cement Companies Ltd.. All rights reserved.