Predicting Embodied Carbon and Cost Effectiveness of Post-Tensioned Slabs Using Novel Hybrid Firefly ANN

Post-tensioning has become a strong contender for manufacturing reinforced concrete (RC) members, especially for flat slabs in large-span structures. Post-tensioned (PT) slabs can lead to considerable material savings while reducing the embodied carbon (embodied CO<sub>2</sub>), construc...

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Autores principales:	Iman Faridmehr, Moncef L. Nehdi, Mehdi Nikoo, Kiyanets A. Valerievich
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	post-tension reinforced concrete slab embodied carbon sustainability green construction Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/6dae98c73c214912b0e5dbd5a40c31a0
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spelling	oai:doaj.org-article:6dae98c73c214912b0e5dbd5a40c31a02021-11-11T19:51:59ZPredicting Embodied Carbon and Cost Effectiveness of Post-Tensioned Slabs Using Novel Hybrid Firefly ANN10.3390/su1321123192071-1050https://doaj.org/article/6dae98c73c214912b0e5dbd5a40c31a02021-11-01T00:00:00Zhttps://www.mdpi.com/2071-1050/13/21/12319https://doaj.org/toc/2071-1050Post-tensioning has become a strong contender for manufacturing reinforced concrete (RC) members, especially for flat slabs in large-span structures. Post-tensioned (PT) slabs can lead to considerable material savings while reducing the embodied carbon (embodied CO<sub>2</sub>), construction time, and life cycle maintenance and repair costs. In this research, a novel hybrid Firefly–Artificial Neural Network (Firefly–ANN) computational intelligence model was developed to estimate the cost effectiveness and embodied CO<sub>2</sub> of PT slabs with different design variables. To develop the dataset, several numerical models with various design variables, including the pattern of tendons, slab thickness, mechanical properties of materials, and span of slabs, were developed to investigate the sustainability and economic competitiveness of the derived designs compared to benchmark conventional RC flat slabs. Several performance measures, including punching shear and heel drop vibration induced by human activity, were used as design constraints to satisfy safety and serviceability criteria. The economic competitiveness of PT slabs was more evident in larger spans where the cost and embodied CO<sub>2</sub> emissions decreased by 39% and 12%, respectively, in PT slabs with a 12-m span length compared to conventional RC slabs. Sensitivity analysis also confirmed that the cost and embodied CO<sub>2</sub> emissions were very sensitive to the slab thickness by 86% and 62%, respectively.Iman FaridmehrMoncef L. NehdiMehdi NikooKiyanets A. ValerievichMDPI AGarticlepost-tensionreinforced concreteslabembodied carbonsustainabilitygreen constructionEnvironmental effects of industries and plantsTD194-195Renewable energy sourcesTJ807-830Environmental sciencesGE1-350ENSustainability, Vol 13, Iss 12319, p 12319 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	post-tension reinforced concrete slab embodied carbon sustainability green construction Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
spellingShingle	post-tension reinforced concrete slab embodied carbon sustainability green construction Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 Iman Faridmehr Moncef L. Nehdi Mehdi Nikoo Kiyanets A. Valerievich Predicting Embodied Carbon and Cost Effectiveness of Post-Tensioned Slabs Using Novel Hybrid Firefly ANN
description	Post-tensioning has become a strong contender for manufacturing reinforced concrete (RC) members, especially for flat slabs in large-span structures. Post-tensioned (PT) slabs can lead to considerable material savings while reducing the embodied carbon (embodied CO<sub>2</sub>), construction time, and life cycle maintenance and repair costs. In this research, a novel hybrid Firefly–Artificial Neural Network (Firefly–ANN) computational intelligence model was developed to estimate the cost effectiveness and embodied CO<sub>2</sub> of PT slabs with different design variables. To develop the dataset, several numerical models with various design variables, including the pattern of tendons, slab thickness, mechanical properties of materials, and span of slabs, were developed to investigate the sustainability and economic competitiveness of the derived designs compared to benchmark conventional RC flat slabs. Several performance measures, including punching shear and heel drop vibration induced by human activity, were used as design constraints to satisfy safety and serviceability criteria. The economic competitiveness of PT slabs was more evident in larger spans where the cost and embodied CO<sub>2</sub> emissions decreased by 39% and 12%, respectively, in PT slabs with a 12-m span length compared to conventional RC slabs. Sensitivity analysis also confirmed that the cost and embodied CO<sub>2</sub> emissions were very sensitive to the slab thickness by 86% and 62%, respectively.
format	article
author	Iman Faridmehr Moncef L. Nehdi Mehdi Nikoo Kiyanets A. Valerievich
author_facet	Iman Faridmehr Moncef L. Nehdi Mehdi Nikoo Kiyanets A. Valerievich
author_sort	Iman Faridmehr
title	Predicting Embodied Carbon and Cost Effectiveness of Post-Tensioned Slabs Using Novel Hybrid Firefly ANN
title_short	Predicting Embodied Carbon and Cost Effectiveness of Post-Tensioned Slabs Using Novel Hybrid Firefly ANN
title_full	Predicting Embodied Carbon and Cost Effectiveness of Post-Tensioned Slabs Using Novel Hybrid Firefly ANN
title_fullStr	Predicting Embodied Carbon and Cost Effectiveness of Post-Tensioned Slabs Using Novel Hybrid Firefly ANN
title_full_unstemmed	Predicting Embodied Carbon and Cost Effectiveness of Post-Tensioned Slabs Using Novel Hybrid Firefly ANN
title_sort	predicting embodied carbon and cost effectiveness of post-tensioned slabs using novel hybrid firefly ann
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/6dae98c73c214912b0e5dbd5a40c31a0
work_keys_str_mv	AT imanfaridmehr predictingembodiedcarbonandcosteffectivenessofposttensionedslabsusingnovelhybridfireflyann AT monceflnehdi predictingembodiedcarbonandcosteffectivenessofposttensionedslabsusingnovelhybridfireflyann AT mehdinikoo predictingembodiedcarbonandcosteffectivenessofposttensionedslabsusingnovelhybridfireflyann AT kiyanetsavalerievich predictingembodiedcarbonandcosteffectivenessofposttensionedslabsusingnovelhybridfireflyann
_version_	1718431413485699072

Predicting Embodied Carbon and Cost Effectiveness of Post-Tensioned Slabs Using Novel Hybrid Firefly ANN

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