Considering life-cycle environmental impacts and society's willingness for optimizing construction and demolition waste management fee: An empirical study of China

2019 ◽  
Vol 206 ◽  
pp. 1004-1014 ◽  
Author(s):  
Jiayuan Wang ◽  
Huanyu Wu ◽  
Vivian W.Y. Tam ◽  
Jian Zuo
Keyword(s):  
Life Cycle ◽  
Empirical Study ◽  
Waste Management ◽  
Environmental Impacts ◽  
Construction And Demolition Waste ◽  
Demolition Waste

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

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.

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

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.

scholarly journals Application of life cycle assessment (LCA) methodology and economic evaluation for construction and demolition waste: a Colombian case study

2021 ◽  
Vol 25 (3) ◽  
pp. 341-351
Author(s):  
Sindy Sofía Suárez Silgado ◽  
Lucrecia Janneth Calderon Valdiviezo ◽  
Leandro Fernando Mahecha Vanegas
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Impacts ◽  
Raw Materials ◽  
Construction And Demolition Waste ◽  
Lca Methodology ◽  
Environmental Implications ◽  
Demolition Waste ◽  
Secondary Sources ◽  
Management Processes

The construction industry consumes more raw materials and energy than any other economic activity and generates the largest fraction of waste, known as construction and demolition waste (CDW). This waste has significant environmental implications, most notably in South American countries such as Colombia, where it is handled inappropriately. This study evaluated the management processes currently used for fractions of construction and demolition waste generated in Ibagué (Colombia). The environmental impacts of the management of 1 kg of CDW were also calculated. Other CDW management alternatives were evaluated. The percentage of the fraction of the waste and the treatment or management processes used were modified to determine its environmental and economic viability. The information was obtained through telephone interviews and visits to recycling plants, construction companies, quarries, government entities, and inert landfills. It was completed with secondary sources and the Ecoinvent v.2.2 databases. Life Cycle Assessment (LCA) methodology and the SimaPro 8 software were used to calculate the environmental impacts. An economic study of each management process and each alternative was also carried out. A comparison of the other options revealed the current choice contributes most to the environmental impacts in all categories. This study indicates that the most beneficial alternative in environmental and economic terms in Ibagué (Colombia) is where 100% of the metals are recovered, 100% of excavated earth is reused, and 100% of the stone waste is recycled (alternative 3). This alternative remained the most favorable when a sensitivity analysis was carried out with different distances (30 km and 50 km).

scholarly journals Potential Energy Savings from Circular Economy Scenarios Based on Construction and Agri-Food Waste in Italy

Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8561
Author(s):  
Patrizia Ghisellini ◽  
Amos Ncube ◽  
Gianni D’Ambrosio ◽  
Renato Passaro ◽  
Sergio Ulgiati
Keyword(s):  
Life Cycle ◽  
Potential Energy ◽  
Environmental Impacts ◽  
Circular Economy ◽  
Energy Savings ◽  
Construction Materials ◽  
Construction And Demolition Waste ◽  
Recycled Aggregates ◽  
Demolition Waste ◽  
Environmentally Sustainable

In this study, our aim was to explore the potential energy savings obtainable from the recycling of 1 tonne of Construction and Demolition Waste (C&DW) generated in the Metropolitan City of Naples. The main fraction composing the functional unit are mixed C&DW, soil and stones, concrete, iron, steel and aluminium. The results evidence that the recycling option for the C&DW is better than landfilling as well as that the production of recycled aggregates is environmentally sustainable since the induced energy and environmental impacts are lower than the avoided energy and environmental impacts in the life cycle of recycled aggregates. This LCA study shows that the transition to the Circular Economy offers many opportunities for improving the energy and environmental performances of the construction sector in the life cycle of construction materials by means of internal recycling strategies (recycling C&DW into recycled aggregates, recycled steel, iron and aluminum) as well as external recycling by using input of other sectors (agri-food by-products) for the manufacturing of construction materials. In this way, the C&D sector also contributes to realizing the energy and bioeconomy transition by disentangling itself from fossil fuel dependence.

Life cycle assessment of construction and demolition waste management

2015 ◽  
Vol 44 ◽  
pp. 196-205 ◽  
Author(s):  
Stefania Butera ◽  
Thomas H. Christensen ◽  
Thomas F. Astrup
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Waste Management ◽  
Construction And Demolition Waste ◽  
Demolition Waste
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