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Optimization of biogenic supplementary cementitious materials in concrete prepared from East-Indian Lemon Grass (Cymbopogon flexuosus) and poultry litter using response surface methodology
https://orcid.org/http://orcid.org/0000-0003-0114-3858
Developing construction materials from biomass and biowaste as a substitute for conventional cement has been receiving immense global interest in recent times, due to issues like greenhouse gas (GHG) emissions (e.g. CO2), rapid depletion of non-renewable resources, and extensive energy consumption during cement production. Supplementary cementitious materials (SCMs) like fly ash, slag, and natural pozzolans can substitute conventional cement partially and can contribute to reducing GHG emissions and the environmental footprint of cement production. This study aims to prepare bio-based pozzolans from East-Indian lemon grass (Cymbopogon flexuosus) and poultry litter and to investigate the mechanical properties of concrete through their utilization as SCMs. The optimization process involves central composite design (CCD)-based response surface methodology (RSM) for modelling and statistical analyses using experimental data from the study. Analysis of variance (ANOVA) revealed the model’s significance, with coefficient of determination (R2) of 0.9956. The individual and synergistic effects of the considered factors on compressive strength were analysed using three-dimensional response surface plot. Based on RSM analysis, concrete prepared by substituting 17.57% of ordinary Portland cement with SCM (which was cured for 25.82 days with a water–cement ratio of 0.54) yielded the optimum compressive, flexural and split tensile strengths of 33.94 ± 0.12, 8.78 ± 0.02 and 3.06 ± 0.02 N/mm2, respectively. Furthermore, the SCM-mixed concrete exhibited enhanced durability properties compared to traditional ones. The findings also demonstrate the robustness of RSM as a significant tool for optimization of concrete performance. Moreover, the characterization results of pyrolytic lemon grass bio-oil (LG-BO) confirm its bioenergy potential, thereby suggesting its diverse utilization in various applications.
Optimization of biogenic supplementary cementitious materials in concrete prepared from East-Indian Lemon Grass (Cymbopogon flexuosus) and poultry litter using response surface methodology
https://orcid.org/http://orcid.org/0000-0003-0114-3858
Developing construction materials from biomass and biowaste as a substitute for conventional cement has been receiving immense global interest in recent times, due to issues like greenhouse gas (GHG) emissions (e.g. CO2), rapid depletion of non-renewable resources, and extensive energy consumption during cement production. Supplementary cementitious materials (SCMs) like fly ash, slag, and natural pozzolans can substitute conventional cement partially and can contribute to reducing GHG emissions and the environmental footprint of cement production. This study aims to prepare bio-based pozzolans from East-Indian lemon grass (Cymbopogon flexuosus) and poultry litter and to investigate the mechanical properties of concrete through their utilization as SCMs. The optimization process involves central composite design (CCD)-based response surface methodology (RSM) for modelling and statistical analyses using experimental data from the study. Analysis of variance (ANOVA) revealed the model’s significance, with coefficient of determination (R2) of 0.9956. The individual and synergistic effects of the considered factors on compressive strength were analysed using three-dimensional response surface plot. Based on RSM analysis, concrete prepared by substituting 17.57% of ordinary Portland cement with SCM (which was cured for 25.82 days with a water–cement ratio of 0.54) yielded the optimum compressive, flexural and split tensile strengths of 33.94 ± 0.12, 8.78 ± 0.02 and 3.06 ± 0.02 N/mm2, respectively. Furthermore, the SCM-mixed concrete exhibited enhanced durability properties compared to traditional ones. The findings also demonstrate the robustness of RSM as a significant tool for optimization of concrete performance. Moreover, the characterization results of pyrolytic lemon grass bio-oil (LG-BO) confirm its bioenergy potential, thereby suggesting its diverse utilization in various applications.
Optimization of biogenic supplementary cementitious materials in concrete prepared from East-Indian Lemon Grass (Cymbopogon flexuosus) and poultry litter using response surface methodology
https://orcid.org/http://orcid.org/0000-0003-0114-3858
Developing construction materials from biomass and biowaste as a substitute for conventional cement has been receiving immense global interest in recent times, due to issues like greenhouse gas (GHG) emissions (e.g. CO2), rapid depletion of non-renewable resources, and extensive energy consumption during cement production. Supplementary cementitious materials (SCMs) like fly ash, slag, and natural pozzolans can substitute conventional cement partially and can contribute to reducing GHG emissions and the environmental footprint of cement production. This study aims to prepare bio-based pozzolans from East-Indian lemon grass (Cymbopogon flexuosus) and poultry litter and to investigate the mechanical properties of concrete through their utilization as SCMs. The optimization process involves central composite design (CCD)-based response surface methodology (RSM) for modelling and statistical analyses using experimental data from the study. Analysis of variance (ANOVA) revealed the model’s significance, with coefficient of determination (R2) of 0.9956. The individual and synergistic effects of the considered factors on compressive strength were analysed using three-dimensional response surface plot. Based on RSM analysis, concrete prepared by substituting 17.57% of ordinary Portland cement with SCM (which was cured for 25.82 days with a water–cement ratio of 0.54) yielded the optimum compressive, flexural and split tensile strengths of 33.94 ± 0.12, 8.78 ± 0.02 and 3.06 ± 0.02 N/mm2, respectively. Furthermore, the SCM-mixed concrete exhibited enhanced durability properties compared to traditional ones. The findings also demonstrate the robustness of RSM as a significant tool for optimization of concrete performance. Moreover, the characterization results of pyrolytic lemon grass bio-oil (LG-BO) confirm its bioenergy potential, thereby suggesting its diverse utilization in various applications.
Optimization of biogenic supplementary cementitious materials in concrete prepared from East-Indian Lemon Grass (Cymbopogon flexuosus) and poultry litter using response surface methodology
Energ. Ecol. Environ.
Bora, Neelam (author) / Daimary, Niran (author) / Athparia, Mondita (author) / Loganathan, M. K. (author) / Kataki, Rupam (author)
Energy, Ecology and Environment ; 9 ; 382-403
2024-08-01
22 pages
Article (Journal)
Electronic Resource
English
| European Patent Office | 2023
| European Patent Office | 2023
| European Patent Office | 2024
| European Patent Office | 2023