Multiobjective Mathematical Programming Model for the Optimization of End-of-Life Buildings’ Deconstruction and Demolition Processes

Nowadays, construction and demolition waste management has become a critical process for the construction industry, as the specific waste stream poses important environmental issues and challenges. In the case of dismantling end-of-life buildings, the selection of the appropriate technique between deconstruction and conventional demolition is a critical decision affecting the total volume and type of produced waste. Toward this effect, in this paper, a novel decision-making model for the optimization of end-of-life buildings’ deconstruction and demolition processes is proposed. The objective of the proposed model is the simultaneous and weighted optimization of the total cost and time for the completion of the deconstruction and demolition processes, taking into consideration economic, legislative, and environmental criteria. Finally, a demonstration of the application of the proposed model is presented via two specific case studies and by discussing a few interesting managerial insights.

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From Buildings’ End of Life to Aggregate Recycling under a Circular Economic Perspective: A Comparative Life Cycle Assessment Case Study

Sustainability ◽

10.3390/su13179625 ◽

2021 ◽

Vol 13 (17) ◽

pp. 9625

Author(s):

Ambroise Lachat ◽

Konstantinos Mantalovas ◽

Tiffany Desbois ◽

Oumaya Yazoghli-Marzouk ◽

Anne-Sophie Colas ◽

...

Keyword(s):

Life Cycle Assessment ◽

Life Cycle ◽

End Of Life ◽

Environmental Impacts ◽

Open Loop ◽

Decision Makers ◽

Construction And Demolition Waste ◽

Recycled Aggregates ◽

Demolition Waste

The demolition of buildings, apart from being energy intensive and disruptive, inevitably produces construction and demolition waste (C&Dw). Unfortunately, even today, the majority of this waste ends up underexploited and not considered as valuable resources to be re-circulated into a closed/open loop process under the umbrella of circular economy (CE). Considering the amount of virgin aggregates needed in civil engineering applications, C&Dw can act as sustainable catalyst towards the preservation of natural resources and the shift towards a CE. This study completes current research by presenting a life cycle inventory compilation and life cycle assessment case study of two buildings in France. The quantification of the end-of-life environmental impacts of the two buildings and subsequently the environmental impacts of recycled aggregates production from C&Dw was realized using the framework of life cycle assessment (LCA). The results indicate that the transport of waste, its treatment, and especially asbestos’ treatment are the most impactful phases. For example, in the case study of the first building, transport and treatment of waste reached 35% of the total impact for global warming. Careful, proactive, and strategic treatment, geolocation, and transport planning is recommended for the involved stakeholders and decision makers in order to ensure minimal sustainability implications during the implementation of CE approaches for C&Dw.

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Environmental Impacts and Benefits of the End-of-Life of Building Materials: Database to Support Decision Making and Contribute to Circularity

Sustainability ◽

10.3390/su132212659 ◽

2021 ◽

Vol 13 (22) ◽

pp. 12659

Author(s):

Ana Antunes ◽

Ricardo Martins ◽

José Dinis Silvestre ◽

Ricardo do Carmo ◽

Hugo Costa ◽

...

Keyword(s):

Decision Making ◽

Waste Management ◽

End Of Life ◽

Environmental Impacts ◽

Building Materials ◽

National Level ◽

Construction And Demolition Waste ◽

Demolition Waste ◽

Life Phase ◽

The Impact

This paper outlines a methodology for structuring a generic database of environmental impacts on the end-of-life phase of buildings, which can be used at the national level, in accordance with European standards. A number of different options are also considered for managing construction and demolition waste (CDW), as well as for promoting the circularity of materials in construction. The database structure has been developed for use by the main stakeholders who decide the disposal scenario for the main CDW flows, assess waste management plans, and identify the corresponding environmental aspects. The impact categories considered in this paper are global warming potential (GWP) and the abiotic depletion potential of fossil fuels (ADP (f.f.)). This lifecycle assessment (LCA) database further facilitates the identification of important information, such as possible treatments for CDW, or suppliers of recycled materials for use in new construction. Two demolition case studies were used to confirm the benefits of the proposed database. Two demolition scenarios are assessed—traditional and selective—in order to demonstrate the advantage of selective demolition in waste management. The results obtained from the environmental assessment of CDW flows demonstrate that the proposed database can be an important and useful tool for decision making about the end-of-life of construction materials, as it is designed to maximize their reuse and recycling. An innovative online platform can be created based on this database, contributing to the reduction of the environmental impacts associated with the end-of-life phase of buildings.

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Estimating the Generation of Construction and Demolition Waste by Using System Dynamics: A Proposed Model

2010 4th International Conference on Bioinformatics and Biomedical Engineering ◽

10.1109/icbbe.2010.5517850 ◽

2010 ◽

Cited By ~ 2

Author(s):

Gui Ye ◽

Hongping Yuan ◽

Hongxia Wang

Keyword(s):

System Dynamics ◽

Construction And Demolition Waste ◽

Demolition Waste ◽

Proposed Model

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An Integer Programming Model for Alternative Selection and Planning Stages for Cleaner Production Programs: a Case Study for Greenhouse Gases Reduction

Science and Technology Development Journal ◽

10.32508/stdj.v19i2.695 ◽

2016 ◽

Vol 19 (2) ◽

pp. 5-17

Author(s):

Thanh Van Tran ◽

Hai Thanh Le

Keyword(s):

Integer Programming ◽

Greenhouse Gases ◽

Programming Model ◽

Electricity Consumption ◽

Cleaner Production ◽

Waste Reduction ◽

Integer Programming Model ◽

Proposed Model ◽

Selection Of

The selection of subjects (such as waste stream, process, apparatus, ect.) for improvement and development their alternatives when implementing cleaner production (CP) programs at the company in order to achieve the highest efficiency is a complex and timeconsuming process, especially in case when there are many subjects to be improved, and many alternatives for each subject. The problem in this case is which subject and its respective alternative is to be selected in order to obtain maximal waste reduction objective with minimization cost. To solve this problem, this article proposes an optimization mathematical model to support alternatives selection for CP programs. In this study, an integer programming model is applied for defining theselection steps of alternatives and setting the implementing plan within CP program. The proposed model is investigated in a real case study at a cassava starch factory in Tay Ninh, Vietnam (where is the most concentrated area of cassava processing in the country) with purpose to propose the measures for reduction of greenhouse gases (GHGs) and electricity consumption. The results show that this model can be considered as a new effective method for alternative CP selection and planning for CP implementation, especially in case of many subjects and alternatives. The solution of this model can be generalized to apply in any cases with unlimited number of subjects and alternatives.

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Considerations for better construction and demolition waste management: Identifying the decision behaviors of contractors and government departments through a game theory decision-making model

Journal of Cleaner Production ◽

10.1016/j.jclepro.2018.11.262 ◽

2019 ◽

Vol 212 ◽

pp. 190-199 ◽

Cited By ~ 29

Author(s):

Jianguo Chen ◽

Chunxiang Hua ◽

Chenyu Liu

Keyword(s):

Game Theory ◽

Decision Making ◽

Waste Management ◽

Construction And Demolition Waste ◽

Demolition Waste ◽

Decision Making Model ◽

Decision Behaviors

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Dynamic Disassembly Planning for Remanufacturing of Multiple Types of Products

Volume 6: 15th Design for Manufacturing and the Lifecycle Conference; 7th Symposium on International Design and Design Education ◽

10.1115/detc2010-28657 ◽

2010 ◽

Cited By ~ 1

Author(s):

Changmuk Kang ◽

Yoo S. Hong

Keyword(s):

Linear Programming ◽

End Of Life ◽

Programming Model ◽

Cost Minimization ◽

New Products ◽

Variable Level ◽

Proposed Model ◽

Return Flows ◽

Disassembly Plan ◽

Disassembly Planning

With the increased need for remanufacturing of end-of-life products, achieving economic efficiency in remanufacturing is urgently needed. The purpose of this study was to devise a cost-minimization plan for disassembly and remanufacturing of end-of-life products returned by consumers. A returned end-of-life product is disassembled into remanufacturable parts, which are supposed to be used for new products after being remanufactured. Each end-of-life product is disassembled into parts at variable levels as needed, taking into account not only disassembly but also manufacturing, remanufacturing, and holding inventory of remanufacturable parts. This study proposes a linear programming model for derivation of the optimal disassembly plan for each returned product, under deterministically known demand and return flows. For the purposes of an illustrative example, the proposed model was applied to the formulation of an optimal disassembly and remanufacturing plan of ‘Fuser Assembly’ of laser printers. The solution reveals that variable-level disassembly of products saves a significant remanufacturing cost compared with full disassembly.

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BIM-based information system for econo-enviro-friendly end-of-life disposal of construction and demolition waste

Automation in Construction ◽

10.1016/j.autcon.2021.103611 ◽

2021 ◽

Vol 125 ◽

pp. 103611

Author(s):

Yi Shi ◽

Jiuping Xu

Keyword(s):

Information System ◽

End Of Life ◽

Construction And Demolition Waste ◽

Demolition Waste

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MCDM approach for weighted ranking of candidates in e-voting

Informacijos mokslai ◽

10.15388/im.2019.86.23 ◽

2019 ◽

Vol 86 ◽

pp. 8-22 ◽

Cited By ~ 1

Author(s):

Rasim Alguliyev ◽

Ramiz Aliguliyev ◽

Farhad Yusifov

Keyword(s):

Decision Making ◽

Numerical Study ◽

Ranking And Selection ◽

Multi Criteria Decision Making ◽

Linguistic Variables ◽

Multi Criteria Evaluation ◽

Qualified Personnel ◽

Proposed Model ◽

Decision Making Model ◽

Selection Of

The aim of the study is the application of multi-criteria evaluation methods for ranking of candidates in e-voting. Due to the potential to enhance the electoral efficiency in e-voting multiple criteria, such as personality traits, activity and reputation in social media, opinion followers on election area and so on for the selection of qualified personnel can be considered. In this case, the number of criteria excesses in the decision-making stage directed us to the use of a multi-criteria decision making model (MCDM). This paper proposes MCDM for weighted ranking of candidates in e-voting. Criteria for the candidates’ ranking and selection are determined and each voter uses the linguistic scales for the ranking of each candidate. Candidates’ ranking is evaluated according to all criteria. In a numerical study, it is provided the candidates’ evaluation on the base of selected criteria and ranked according to the importance of criteria. To assess the importance of the criteria and to evaluate the suitability of the candidates for each of the criteria, the voters use linguistic variables. In practice, the proposed model can use different evaluation scales for the selection of candidates in e-voting. The proposed model allows selecting a candidate with the competencies based on the criteria set out in the e-voting process and making more effective decisions.

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