PSI - Issue 70

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ScienceDirect

Procedia Structural Integrity 70 (2025) 642–649

Structural Integrity and Interactions of Materials in Civil Engineering Structures (SIIMCES-2025) Manufacture of artificial aggregates using alkaline solution at different curing temperature and studying their properties in concrete Maahira M. a , Neethu K Pradeep a , Jeshva P. R. a , M. Siva a,* Abstract In this study metallic slag (i.e. waste material obtained as the byproduct of smelt) from different metal extraction industry is collected and utilized for the manufacturing of artificial aggregates due its silica rich composition. The aggregates were manufactured using Pelletization technique with Ground granulated blast furnace slag (GGBS) and Copper slag as source material along with alkaline solution as binding material. Copper slag was added as filler to enhance the property of aggregate. Three different molarities such as 8M, 10M and 12M mix were used for the manufacture of artificial aggregate. The physical and mechanical properties of aggregates (i.e. flakiness index, elongation index, specific gravity, crushing value, impact value) are tested as per Indian standards (i.e. IS 2386 (I IV)). The properties were observed to be slightly lesser than the required standards. Hence the aggregates are oven cured at a temperature of 60ºC to accelerate the process. The properties are observed to be improved due to the improved microstructure and were found to be equivalent to the conventional aggregates. Then geo-polymer concrete of M30 grade cubes were cast using artificial aggregates. Then the cubes were tested for compression strength, Split tensile strength and water absorption, from which we got promising results to use the manufactured aggregate in the production of structural concrete. a Civil Engineering Department, Easwari Engineering College, Chennai, Tamil Nadu, India review under the responsibility of International Conference on Structural Integrity Organizer Keywords: GGBS; Copper Slag; Geo-polymer Concrete; © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under the responsibility of International Conference on Structural Integrity Organizers

* Corresponding author. Tel.: +91-9941111411. E-mail address: m.siva@eec.srmrmp.edu.in

2452-3216 © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under the responsibility of International Conference on Structural Integrity Organizers 10.1016/j.prostr.2025.07.101