Sustainability of pre-treated and nano-fly ash powder on the thermal stability and environmental impact of green mortars under ambient conditions

Mohana, R.; Bharathi, S.M. Leela

doi:10.1016/j.jobe.2023.106494

Cited by 2 publications

(2 citation statements)

References 32 publications

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“…The results of the study provided empirical evidence supporting the efficacy of augmenting cement concrete with the incorporation of fly ash, silica fume, and superplasticiser. Mohana et al [26] revealed that mortars containing 1% nano-fly ash demonstrated superior compressive strength compared to other compositions under various temperature settings. The mortars exhibited a remarkable capacity to maintain 67% of their initial strength following exposure to a peak temperature of 900 • C. This resulted in a notable decrease of 46% in greenhouse gas emissions, as well as a significant reduction of 18.3% in construction expenses pertaining to the implementation of the environmentally friendly mortar.…”

Section: Literature Review On Fly Ashmentioning

confidence: 99%

Evaluating the Elastic Constants of Concrete, Modified with Fly Ash and Marble Waste, and Their Effects on High-Rise Buildings Using ETABS Software

Moolchandani,

Sharma

2023

Sustainability

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This study involves partially replacing coarse aggregate with marble waste products, and partially replacing cement with fly ash, in order to obtain the best results. This study aims to determine how the use of these waste products affects the mechanical properties of the resulting concrete, which could have valuable implications for sustainable construction practices. Different samples were prepared by adding marble waste products, marble slurry powder, fly ash, and a combination of these in the concrete. The modulus of elasticity and Poisson’s ratio for the samples were calculated, and it was found that the samples with admixtures had lower moduli of elasticity and higher Poisson’s ratio values than did the conventional concrete mixture. Based on the values of elastic constants E and µ of the general and modified concrete mixtures, two structures are modelled for each concrete mixture and simulated using ETABS Ultimate software to evaluate and compare the practical applicability of the modified concrete mixtures. Both of the envisaged buildings are considered identical, having shear walls placed symmetrically. The response of the structure was analysed by applying earthquake load, wind load, and respective combinations according to IS codes. The storey displacement and storey stiffness under the lateral load and load combination were determined. The results showed that the modified concrete had comparable storey displacement and storey stiffness values to those of conventional concrete. The results indicate that the use of admixtures in concrete has several benefits, including improved workability, as well as adequate strength and durability, including resistance to deformation, as compared to conventional concrete.

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Section: Literature Review On Fly Ashmentioning

confidence: 99%

Evaluating the Elastic Constants of Concrete, Modified with Fly Ash and Marble Waste, and Their Effects on High-Rise Buildings Using ETABS Software

Moolchandani,

Sharma

2023

Sustainability

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“…Tiny and spherical granules of FA help in the particle packing of concrete and its lubrication, thereby improving the cohesion and workability of the concrete mix [22][23][24][25]. The large surface area of fine FA particles also interacts with cement hydration byproducts to save water consumption and enhance workability [26][27][28][29][30][31]. Fine FA also helps in reducing the bleeding and segregation to prepare a fresh homogeneous concrete.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Concrete Performance with Crumb Rubber and Waste Materials: A Study on Mechanical and Durability Properties

Moolchandani,

Sharma,

Kishan

2024

Buildings

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In addressing the dual challenges of sustainable waste management and environmental conservation in the construction industry, particularly the disposal of waste tire crumb rubber (CR) and the demand for eco-friendly building materials, this study explores a novel solution. It examines the sustainable incorporation of waste tire crumb rubber and mineral additions—namely silica fume (SF), marble slurry powder (MSP), and fly ash (FA)—as partial substitutes for natural fine aggregates and cement in concrete. Through comprehensive testing of seventeen concrete samples, the study reveals that the specific mix of R10S5M10F15 that contained 10% crumb rubber as replacement of fine aggregates, and 5% silica fume, 10% marble slurry powder and 15% fly ash as replacements of cement, not only achieves compressive and split tensile strength comparable to the control mix, while the 90 days flexural strength was improved by 4.48%; credited to SF’s pozzolanic action and the filler effects of MSP and FA, but also that the inclusion of CR, while reducing compressive strength due to material variations, enhances ductility and improves resistance to sulfate and acid attacks, despite increasing water absorption. The primary goal of this research is to investigate the feasibility and effectiveness of using waste materials in concrete to foster more sustainable construction practices. The objectives include a detailed assessment of the mechanical properties and durability of concrete incorporating these waste materials, aiming to determine the optimal mix proportions for their effective utilization. This study’s novelty lies in its detailed analysis of the synergistic effects of combining CR, SF, MSP, and FA in concrete, contributing to the field by offering a sustainable alternative approach to traditional concrete formulations and highlighting the delicate balance required for optimized concrete performance.

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Sustainability of pre-treated and nano-fly ash powder on the thermal stability and environmental impact of green mortars under ambient conditions

Cited by 2 publications

References 32 publications

Evaluating the Elastic Constants of Concrete, Modified with Fly Ash and Marble Waste, and Their Effects on High-Rise Buildings Using ETABS Software

Evaluating the Elastic Constants of Concrete, Modified with Fly Ash and Marble Waste, and Their Effects on High-Rise Buildings Using ETABS Software

Enhancing Concrete Performance with Crumb Rubber and Waste Materials: A Study on Mechanical and Durability Properties

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