The construction industry is undergoing a significant transformation driven by digitalization and an unwavering commitment to implementing circular economy (CE) principles and sustainability into its core practices. Emerging digital technologies (DTs), such as Material Passports (MPs), Building Information Modelling (BIM) Artificial Intelligence (AI) and Scanning technologies, Blockchain technology (BCT), the Internet of Things (IoT) stand out as pivotal tools capable of expediting the transition towards CE implementation in buildings. This study highlights the significant potential of six DTs to support CE application throughout the building lifecycle. Furthermore, it delves into the potential synergies among these diverse DTs, highlighting the additional benefits that collaboration can bring across different lifecycle stages of a building project. Particular emphasis is placed on the integration of MPs with other DTs, showing promise in assessing resource availability, volumes, and flows. This integration optimizes waste reduction and recycling plans, contributing to more precise selective and smart deconstruction planning. The combined use of DTs offers substantial benefits to stakeholders, enabling them to make informed decisions regarding maintenance and understand the current quality of specific materials. Through these means, the study aims to provide a comprehensive overview of the array of DTs propelling circular building practices. It also explores emerging trends in this dynamic field, scrutinizing the effectiveness of adopting these technologies throughout the building life cycle stages, and anticipating potential challenges these technologies may face.

The transition towards a Circular Economy (CE) stands as a pivotal strategy in reshaping our prevailing consumption patterns towards more sustainable resource management. Within this context, the European Union places a strong emphasis on elevating recycling and renovation rates while reducing dependence on primary resources, with a particular focus on the construction industry. Material and Building Passports have emerged as potential tools to facilitate this transition. They play a multifaceted role in CE, serving to raise awareness of the building’s performance, functioning as digital repositories of extensive data, and acting as consulting instruments for stakeholders involved in renovation actions, energy management, and building operation. However, a universally accepted definition of these tools remains elusive, and diverse interpretations persist. To contribute to a deeper understanding of these tools, this study embarks on a comprehensive review, tracing their evolutionary journey and delving into the potentialities and synergies they offer in fostering circularity throughout the life cycle of buildings. It also examines the barriers hindering their full-scale development and adoption, including the lack of standardization and legislative measures, financial constraints, issues of stakeholder involvement and responsibility, as well as challenges associated with data accessibility.

The twin transition driven by European agendas emphasises the dual benefits of integrating digital technologies with green sustainability concepts. In the built environment and construction sector, this integration is exemplified by leveraging digitalisation to enhance circularity in construction processes. This chapter explores this synergy by focusing on the development and application of Material and Building Passports (MPs and BPs). It discusses how these passports are digitally utilised to optimise circularity aspects of buildings and construction materials. The chapter delineates the evolution of MPs and BPs, clarifying their various definitions, variants, and potential applications to support the sector's twin transition. Additionally, it examines numerous initiatives and pilot projects aimed at defining the passports, including their requirements and conditions, and the standardisation efforts to ensure their widespread adoption through a unified content structure. The roles of MPs and BPs across different lifecycle stages are elaborated, with a particular emphasis on the enhanced functionalities enabled by Building Information Modelling (BIM). Moreover, the chapter identifies several barriers impeding the full adoption of these passports, such as legislative and standardisation challenges, information security concerns, lack of collaboration, and issues with information accessibility and sharing. It concludes by suggesting future research directions to further refine the passports for optimised use by construction industry stakeholders.

Eko-verimlilik, daha az atık, kaynak ve enerji kullanımı ile ürün üretme ilkesidir. Bu özelliğe göre eko-verimlilik, sadece çevresel kaygılar için değil, aynı zamanda endüstriyel verimliliğin korunması, doğal kaynaklar ve ekonomik büyüme gibi birçok alan için de önemlidir. İşletmeler için süreç verimliliğinin arttırılması, doğal kaynak kullanımının azaltılması ve hammadde tüketiminin azaltılması, operasyonel verimliliği ve kârlılığı sağlayacaktır. Böylece, eko-verimli işletmeler, verimliliği arttırırken maliyetleri azaltacak ve daha rekabetçi hale gelecektir. Türkiye'de pek çok işletme, eko-verimli hale gelebilmek için danışmanlık hizmeti almaya ve Ar-Ge uygulamalarına ihtiyaç duymaktadır. Ancak, çevre odaklı bakış açısı dışındaki eko-verimlilik kavramının henüz net olarak tanımlanamamış ve anlaşılamamış olmasıyla beraber, ülkemizdeki yetersiz yenilik kapasitesi nedeniyle bu kavram yeterince uygulanamamaktadır. Bu çalışmanın amacı, eko-verimlilik kavramını açıklamak, uluslararası düzeyde kabul görmüş tanımlarından bahsetmek ve küresel gelişimini göstermektir. Ayrıca, ulusal ve işletme düzeyinde eko-verimliliğin uygulanma sürecine ilişkin temel adımları içeren akış diyagramları çalışma kapsamında sunulmaktadır.

The characteristics of supply chains in the construction industry give rise to several information and collaboration system needs, such as system affordability and adaptability. The presence of several companies from a variety of industries in supply chains for the construction industry sets them apart. Information sharing and system integration therefore require cooperation and trust. In the manufacturing industry, a lot of efforts are being made to create tools, technologies, and strategies that would allow supply chain actors to communicate with one another and work together. However, it is more challenging to establish a solid environment for inventory and data management in the construction industry. The Internet and information technology are now being used in the construction industry to strengthen cross-organizational relationships. The employment of these tools in this industry is occasionally hampered by limitations like security worries, a lack of managerial commitment, high costs, and deployment rigidity. Additionally, a dynamic configuration of supply chains is required to integrate with more adaptable business models, increase internationalization, and enhance coordination. For this reason, this study primarily explores the inventory and supply chain tools currently in use in the construction industry and evaluates their functionality from a business and consumer perspective. Other areas of study are based on either inventory management for circular buildings or cross-organizational cooperation, and they include secure data storage, information exchange among stakeholders, and their modification. In the end, it aims to emphasize the key problems with data and inventory management in the construction industry, as well as inform about the potential technology solutions to make a guidance of academic and industry specialists within this study.