PSI - Issue 70

Maahira M. et al. / Procedia Structural Integrity 70 (2025) 642–649

649

4.2 Hardened properties The compressive strength of concrete was tested as per IS512. It was observed that artificial aggregate concrete is 2.8% higher than conventional aggregate concrete. The split tensile strength of artificial aggregate concrete is 21.14 higher than conventional aggregate concrete. The water absorption of artificial aggregate concrete is 16.36% lower than conventional aggregate concrete. The properties shows that the artificial aggregate can be used for the production of structural concrete. Table 3. Hardened properties of concrete using conventional and artificial aggregates Parameters Compressive strength (MPa) Split tensile strength(MPa) Water absorption (%) Conventional aggregate concrete (CAC) Artificial aggregate concrete (AAC) Conventional aggregate concrete (CAC) Artificial aggregate concrete (AAC) Conventional aggregate concrete (CAC) Artificial aggregate concrete (AAC) 5. Conclusion In this study material properties such as flakiness index, elongation index, specific gravity, crushing value and impact value were tested as per the IS 2386:1963. • Artificial Coarse aggregate mixes with copper slag, ground granulated blast furnace slag, and different Molarities (8M, 10 M, 12M) of geopolymer solutions were prepared. • The 8M Mix is observed to provide better impact and crushing strength compared to 10M and 12M mixes. • Artificial aggregates manufactured with cold bonded process were improved by oven curing • The oven cured alkali aggregate irrespective of molarity satisfies the Indian Standards specification. • The compressive strength of the concrete manufactured with artificial aggregate have resulted in 2.8% higher strength compared with conventional concrete • The Split tensile strength of the concrete manufactured with artificial aggregate have resulted in 21.14% higher strength compared with conventional concrete • The water absorption of the concrete manufactured with artificial aggregate have resulted in 16.36% reduction in water absorption compared with conventional concrete. • As the artificial coarse aggregate concrete had achieved M30 grade, it can be used for structural concrete applications. References Alaa M. Rashad, Youssef A. Mosleh, M.M. Mokhtar, Thermal insulation and durability of alkali-activated lightweight slag mortar modified with silica fume and fly ash, Construction and Building Materials, 411, 2024. Bekkeri, G.B., Shetty, K.K. & Nayak, G. Performance of concrete produced with alkali-activated artificial aggregates. J Mater Cycles Waste Manag 26, 2024. Dongming Huang, Chenlong Lin, Zhenzhen Liu, Yiyan Lu, Shan Li, Compressive behaviors of steel fiber‐reinforced geopolymer recycled aggregate concrete‐filled GFRP tube columns, Structures, 66, 2024. Fan L.F., Wang H, W.L. Zhong, Development of lightweight aggregate geopolymer concrete with shale ceramsite, Ceramics, 49, 10, 2023. Hamsashree, Pandit, P., Prashanth, S. et al. Durability of alkali-activated fly ash-slag concrete- state of art. Innov. Infrastruct. Solut. 9, 222, 2024. Klima K M, Luo Y,. Brouwers H.J.H, Qingliang Yu, Effects of mineral wool waste in alkali activated-artificial aggregates for high-temperature applications, Construction and Building Materials, 401, 2023. Ling-Yu Xu, Lan-Ping Qian, Bo-Tao Huang, Jian-Guo Dai, Development of artificial one-part geopolymer lightweight aggregates by crushing technique, Journal of Cleaner Production, 315, 2021. Wei, H.; Wu, T.; Yang, X. Properties of Lightweight Aggregate Concrete Reinforced with Carbon and/or Polypropylene Fibers. Materials, 2020. Value 30.28 31.13 3.3 4.2 1.28 1.1