Journal Articles
Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/19884
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Item Effect of fly ash and bagasse ash on the mechanical properties of light weight concrete; Wpływ popiołu lotnego i popiołu z wytłoczyn z trzciny cukrowej na właściwości mechaniczne betonu lekkiego(Foundation Cement, Lime, Concrete, 2022) Gunasekaran, M.; Palanisamy, T.Light weight concrete is an important part in the concrete technology. The use of mineral additives in light-weight concrete, to replace fine aggregate with fly ash and bagasse ash, helps to reduce the cement content. The present investigation aims to meet the performance of light weight concrete, by adding fly ash and bagasse ash, as fine aggregate replacement additives. The strength properties such as cube compressive strength, cylinder compressive strength and split tensile strength were investigated after different ages, to find the optimum addition of mineral additives such as fly ash and bagasse ash, in concrete. The strengths were compared and the optimal replacement level of cement with fly ash and bagasse ash was found. The cylinder compressive strength and split tensile strength of light weight concrete were measured, at the same replacement levels of mineral additives, at the age of 28 days curing. The mathematical equations were proposed to achieve cube compressive and tensile strengths, cylinder compressive and tensile strength and cube compressive and cylinder compressive strengths, concerning typical strength. © 2022, Foundation Cement, Lime, Concrete. All rights reserved.Item Impact of fly ash and bagasse ash on durability performance of lightweight concrete with the experimental study; Wpływ popiołu lotnego i popiołu z wytłoczyn z trzciny cukrowej na trwałość betonu lekkiego w badaniach doświadczalnych(Foundation Cement, Lime, Concrete, 2022) Gunasekaran, M.; Palanisamy, T.Lightweight concrete [LWC] is rapidly reaching its full potential for a broad range of applications in the construction of concrete structures. It is tailor-made material for specific applications ha-ving beneficial properties. Therefore, the paper is devoted to the experimental analysis and study of fly ash and bagasse ash on the durability properties of lightweight concrete. Durability can be defined as the ability of the material to withstand the effects of its environment which are influencing the deterioration of concrete. The saturated water absorption and sorptivity was studied through experimental investigations, by varying the percentage of fly ash and bagasse ash content. Both fly ash and bagasse ash shows that the increase in the percentage of replacement leads to the more absorption of lightweight concrete. The results are investigated and presented on the studies conducted as follows, showing that the increases in the percentage of replacement, strength also increased. © 2022, Foundation Cement, Lime, Concrete. All rights reserved.Item Oxalic acid optimization for iron-based solid waste conversion into a carbon-sequestering composite building material(Elsevier B.V., 2025) M, N.; Palanisamy, T.The cement industry significantly contributes to global CO2 emissions, accounting for approximately 164 million metric tonnes annually, while total emissions from all sources reach 37 billion metric tonnes. Concurrently, the iron and steel sector generates substantial waste, producing about 500 kg of waste per tonne of steel. Addressing these environmental challenges is crucial for sustainable development. This study presents a sustainable alternative to traditional cement by developing a novel binder material composed primarily of waste iron. The alternative binder not only avoids CO2 emissions but also absorbs CO2 during carbonation curing, effectively contributing to carbon sequestration. Key parameters, including particle size, oxalic acid dosage, and water-to-binder ratio, were individually tested and analyzed for their impact on compressive strength, leading to the finalization of a 75?m particle size and a 0.2 water-to-binder ratio, which yielded compressive strengths of up to 45 MPa. The wet mix method for oxalic acid incorporation demonstrated superior performance compared to the dry mix approach. Comprehensive analyses, including XRD, FTIR, TGA/DTG, and FESEM, confirmed the enhanced reactivity and performance of the material with finer particles and optimized oxalic acid dosage. By utilizing 80% of waste materials, this alternative binder addresses both waste management and carbon capture, aligning with global sustainability objectives and advancing the development of eco-friendly building materials. © 2024 Elsevier B.V.Item Exploring pore solution chemistry and solid phase assemblies in cement-based electrolytes for potential structural batteries(Elsevier B.V., 2025) Sundaramoorthi, S.; Palanisamy, T.This study develops a sustainable cement-based electrolyte for a cement-based battery by incorporating supplementary cementitious materials (SCMs) and epsom salt to enhance electrical performance. Ionic composition and liquid-phase characterization revealed that SCM and epsomite reduced [Ca2+] and [OH?] ion concentration while modulating [SO42?] concentration in the pore solution, depending on the SCM type. Silica fume-based mixes, with lower reactive alumina content, showed increased [SO42?] and higher ionic strength. The SF5E mix exhibited superior electrical performance, achieving a 56 % higher discharge life. Cyclic voltammetry indicated quasi-reversible behaviour with hybrid capacitive-faradaic characteristics, confirming its suitability for energy storage. The microstructural analysis highlighted the stable C–S–H formation, ensuring mechanical integrity alongside electrical functionality. The findings establish SF5E as the optimal electrolyte, demonstrating a balance between ionic conductivity and structural stability. By linking cement chemistry with battery performance, this work lays the foundation for a scalable, self-sustaining energy storage system for applications in structural health monitoring. © 2025 Elsevier B.V.