Circular economy implementation in railway systems beyond net zero

Kaewunruen, Sakdirat; Guo, Yunlong; Jing, Guoqing; Matsumoto, Akira

doi:10.3389/fbuil.2023.1239740

Cited by 11 publications

(3 citation statements)

References 14 publications

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“…Although every professional involved with the built environment sector attempts to embrace sustainability, circular economy and energy efficiency as the primary driver of their design, net zero has not been achieved at the European level 20 , 21 , 43 . This is evident by the annual deep energy renovation rate of merely 0.2% on average in the EU 20 .…”

Section: Introductionmentioning

confidence: 99%

“…potentials to reuse and recycle, energy consumption reduction, cash savings, fuel efficiency, novel cost-effective and resilient renovation technologies, new energy harvesting apparatus, and new circular business capabilities. While quantifying these positive impacts, optimal benefits have been estimated between 100 and 170 kWm/m 2 annually per building over its life cycle (by the European Commission's Building Directive) [19][20][21] .…”

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confidence: 99%

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Comparisons of stakeholders' influences, inter-relationships, and obstacles for circular economy implementation on existing building sectors

Kaewunruen,

Teuffel,

Donmez Cavdar

et al. 2024

Sci Rep

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Buildings are energy- and resource-hungry: their construction and use account for around 39% of global carbon dioxide emissions; they consume around 40% of all the energy produced; they are responsible for over 35% of the EU's total waste generation; and account for about 50% of all extracted (fossil) materials. Therefore, they present a significant challenge to meeting national and international Net Zero targets of reducing greenhouse emissions and fossil resource use. The CircularB Project, is at the heart of this issue, which will underpin synergies of multi-scale circular perspectives (from materials, to components, to assets and built environments), digital transformation solutions, data-driven and complexity science, stakeholder behavioral science, and interdisciplinary capabilities towards achievable, affordable and marketable circular solutions for both new and existing buildings, for sustainable urban design, and for circular built environments across Europe. This paper contributes to the project by deriving new insights into the stakeholders’ influences, inter-relationships, and obstacles in the implementation of circular economy concepts on existing building stocks in Europe, which represent over 90% of whole building assets. In order to identify and derive the insights, our study is rigorously based on (i) a robust critical literature review of key documentations such as articles, standards, policy reports, strategic roadmaps and white papers; and (ii) interviews with relevant stakeholders and decision makers. Uniquely, our work spans across all scales of CE implementation from materials, to products and components, to existing building stocks, and to living built environments. The findings point out the current challenges and obstacles required to be tackled. Inadequacies of financial incentives and governmental enforcement (via policy, legislation, or directive) are commonly found to be the most critical obstacles found throughout Europe. Circular economy is the global challenge and not just a single country can resolve the climate issue without the cooperation of other countries. The insights thus highlight the essential need for harmonized actions and tactical/pragmatic policies promoted and regulated by the European Commission, national and local governments who can dominate the influence, promote inter-relationship, and overcome the barriers towards circular economy much more effectively.

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Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

Comparisons of stakeholders' influences, inter-relationships, and obstacles for circular economy implementation on existing building sectors

Kaewunruen,

Teuffel,

Donmez Cavdar

et al. 2024

Sci Rep

Self Cite

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“…The network expansion is commonly to resolve constantly increasing passenger demand and reducing capacity constraints, which are the challenges that modern urban transportation services must deal with (Shiwakoti et al, 2018). Simultaneously, the developed public transport and high-speed railway systems need to be attractive and create added value for passengers and potential users, which underpins a pillar of sustainability (Kaewunruen et al, 2019;Kaewunruen et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Agent-based modelling of high-speed railway interdependent critical infrastructures facing physical and cyber threats

Kongsap,

Kaewunruen

2024

Front. Built Environ.

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Globally, high-speed rail systems serve nearly 2 billion passenger-km daily. By virtue, they are a critical infrastructure like telecommunication and power networks. Accordingly, they become a catalyst for societal and economic growth stemming from the mobility business. The highspeed rail operations are very complex and interdependent, owing to the escalated demands for long-distance interconnected transportation. In recent years, there have been unreasonable delays for passengers as a new norm due to unfortunate train cancellations and relaxation of mobility performance requirements. Therefore, accurate measurements, monitoring and prediction of disruptive impacts and service performance metrices are indispensable. Within the scope of high-speed rail services, this paper examines how agent-based and multi-agent-based models are utilized to address such the challenges. Our findings reveal that the current use of agents or multi-agent models has some limitations for practical applications. Previous studies showed that mathematical methods to assess the resilience of critical infrastructures, railway scheduling, and vehicle dispatching can yield more satisfactory outcomes, although the approaches can be relatively time-consuming. In contrast, agent-based and multi-agent-based models can shorten processing time and uncover disruptive events more promptly. The paper thus showcases several emerging concepts, including i) the utilization of big data for crisis management, ii) interconnectivity analysis of high-speed rail infrastructures, and iii) enhancement of transport resilience. In addition, our findings identify the most influential agents and their possible applications to enhance systems resilience of highspeed rail networks when dealing with unforeseen physical and cyber threats.

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Stakeholders’ Role, Inter-Relationships, and Obstacles in the Implementation of Circular Economy

Bajare,

Zsembinszki,

Yiatros

et al. 2024

Springer Tracts in Civil Engineering

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The building sector contributes around 39% of global carbon dioxide emissions and consumes nearly 40% of all the energy produced. Over the whole life cycle, the building sector yields over 35% of the EU's total waste generation. These facts substantiate the necessity to implement circular economy in the built environments, in order to mitigate global warming and climate change emergency. This chapter highlights the state-of-the-art knowledge and research gap with respect to the stakeholders’ influences, inter-relationships, and obstacles for circular economy implementation on building stocks. In this chapter, a robust critical literature review of key documentations such as research articles, industry standards, policy reports, strategic roadmaps, case studies, and white papers has been rigorously conducted together with expert interviews. The state-of-the-art review addresses multi scales of CE practices adopted within the built environments. This chapter spells out current challenges and obstacles often encountered by various stakeholders. Case studies related to circular economy implementation have been drawn in order to promote such the CE practices across value chains in different regions and counties; and to overcome the barriers for circular economy implementation.

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Circular economy implementation in railway systems beyond net zero

Cited by 11 publications

References 14 publications

Comparisons of stakeholders' influences, inter-relationships, and obstacles for circular economy implementation on existing building sectors

Comparisons of stakeholders' influences, inter-relationships, and obstacles for circular economy implementation on existing building sectors

Agent-based modelling of high-speed railway interdependent critical infrastructures facing physical and cyber threats

Stakeholders’ Role, Inter-Relationships, and Obstacles in the Implementation of Circular Economy

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