Selection of Circular Proposals in Building Projects: An MCDM Model for Lifecycle Circularity Assessments Using AHP
The circular economy (CE) in construction literature engages with individual CE concepts, mostly at the ‘macro’/‘meso’ levels, and lacks holistic frameworks of indicators for circularity assessments (CAs) to inform decision-making at the ‘micro’ (project) level. This article presents a model using t...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-07-01
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| Series: | Buildings |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-5309/12/8/1110 |
| _version_ | 1797439078266830848 |
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| author | Mohamed Abadi David R. Moore |
| author_facet | Mohamed Abadi David R. Moore |
| author_sort | Mohamed Abadi |
| collection | DOAJ |
| description | The circular economy (CE) in construction literature engages with individual CE concepts, mostly at the ‘macro’/‘meso’ levels, and lacks holistic frameworks of indicators for circularity assessments (CAs) to inform decision-making at the ‘micro’ (project) level. This article presents a model using the Analytic Hierarchy Process (AHP) for circular proposal selection in building projects based on a previously validated conceptual framework. The model involves twelve circularity indicators (CIs) classed under five themes relevant to building lifecycle stages. A questionnaire survey was used to establish the final weight vector of CIs. Participants acknowledged the immediate and prolonged effects of design on circularity and viewed waste as ‘design flaws’ but focused on aspirational design indicators relevant to achieving future circularity and missed opportunities for embedding circular materials in design. Moreover, UK participants showed distinctive behaviours towards CAs (proactive/reactive) based on work experience. ‘UK-Experts’ focused on ‘front-end’ design indicators, while ‘UK-Non-experts’ focused on ‘back-end’ waste management indicators. The findings indicate a partial transition to CE better described as a ‘recycle/reuse economy’. CAs and multiple-criteria decision-making (MCDM) techniques facilitate automated decision-making, which provides a new pathway to digital transformation within built environment. Future research will develop a decision-making tool and apply the proposed model in real-life projects. |
| first_indexed | 2024-03-09T11:47:34Z |
| format | Article |
| id | doaj.art-7138b623fd344d7e8061ca56ced358fd |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-09T11:47:34Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-7138b623fd344d7e8061ca56ced358fd2023-11-30T23:19:26ZengMDPI AGBuildings2075-53092022-07-01128111010.3390/buildings12081110Selection of Circular Proposals in Building Projects: An MCDM Model for Lifecycle Circularity Assessments Using AHPMohamed Abadi0David R. Moore1Department of Mechanical, Aerospace and Civil Engineering (MACE), The University of Manchester, Engineering Building A, Oxford Road, Manchester M13 9PL, UKScott Sutherland School of Architecture and Built Environment, Robert Gordon University, Aberdeen AB10 7AQ, UKThe circular economy (CE) in construction literature engages with individual CE concepts, mostly at the ‘macro’/‘meso’ levels, and lacks holistic frameworks of indicators for circularity assessments (CAs) to inform decision-making at the ‘micro’ (project) level. This article presents a model using the Analytic Hierarchy Process (AHP) for circular proposal selection in building projects based on a previously validated conceptual framework. The model involves twelve circularity indicators (CIs) classed under five themes relevant to building lifecycle stages. A questionnaire survey was used to establish the final weight vector of CIs. Participants acknowledged the immediate and prolonged effects of design on circularity and viewed waste as ‘design flaws’ but focused on aspirational design indicators relevant to achieving future circularity and missed opportunities for embedding circular materials in design. Moreover, UK participants showed distinctive behaviours towards CAs (proactive/reactive) based on work experience. ‘UK-Experts’ focused on ‘front-end’ design indicators, while ‘UK-Non-experts’ focused on ‘back-end’ waste management indicators. The findings indicate a partial transition to CE better described as a ‘recycle/reuse economy’. CAs and multiple-criteria decision-making (MCDM) techniques facilitate automated decision-making, which provides a new pathway to digital transformation within built environment. Future research will develop a decision-making tool and apply the proposed model in real-life projects.https://www.mdpi.com/2075-5309/12/8/1110construction circular economylifecycle circularity assessmentscircularity indicatorsbuilt environmentmultiple-criteria decision-makinganalytic hierarchy process |
| spellingShingle | Mohamed Abadi David R. Moore Selection of Circular Proposals in Building Projects: An MCDM Model for Lifecycle Circularity Assessments Using AHP Buildings construction circular economy lifecycle circularity assessments circularity indicators built environment multiple-criteria decision-making analytic hierarchy process |
| title | Selection of Circular Proposals in Building Projects: An MCDM Model for Lifecycle Circularity Assessments Using AHP |
| title_full | Selection of Circular Proposals in Building Projects: An MCDM Model for Lifecycle Circularity Assessments Using AHP |
| title_fullStr | Selection of Circular Proposals in Building Projects: An MCDM Model for Lifecycle Circularity Assessments Using AHP |
| title_full_unstemmed | Selection of Circular Proposals in Building Projects: An MCDM Model for Lifecycle Circularity Assessments Using AHP |
| title_short | Selection of Circular Proposals in Building Projects: An MCDM Model for Lifecycle Circularity Assessments Using AHP |
| title_sort | selection of circular proposals in building projects an mcdm model for lifecycle circularity assessments using ahp |
| topic | construction circular economy lifecycle circularity assessments circularity indicators built environment multiple-criteria decision-making analytic hierarchy process |
| url | https://www.mdpi.com/2075-5309/12/8/1110 |
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