Enabling circularity in construction: A technology-phase alignment of construction four point zero and circular economy principles

Enabling circularity in construction: A technology-phase alignment of construction four point zero and circular economy principles

ABSTRACT

Integrating Construction four point zero technologies-the construction-specific application of Industry four point zero-with circular economy principles presents a transformative opportunity for the construction sector to enhance sustainability, improve resource efficiency, and build long-term resilience. Construction four point zero refers to the digitalisation and automation of processes through technologies such as Building Information Modelling, the Internet of Things, blockchain, digital twins, robotics, and artificial intelligence. Given the construction industry's significant environmental footprint and contribution to global waste, aligning Construction four point zero with circular economy principles is essential for shifting from traditional linear practices towards regenerative, closed-loop systems. While sectors such as transport and manufacturing have already demonstrated the benefits of Industry four point zero technologies in reducing waste and optimising resources, construction has been comparatively slow to embed these innovations across buildings and infrastructure. In addition, despite growing scholarly and industry interest, there remains no comprehensive framework that systematically integrates Construction four point zero technologies with circular economy principles across all stages of the construction lifecycle.

This study addresses this gap through a systematic literature review of fifty-eight peer-reviewed articles published between twenty fifteen and twenty twenty-four, following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. The review focused on English-language publications directly examining the intersection of Construction four point zero and circular economy in the construction sector, while excluding non-peer-reviewed studies from unrelated industries. Thematic and co-occurrence analyses were applied to map the alignment of circular economy principles with Construction four point zero technologies across seven phases of construction: Planning, Design, Tendering, Manufacturing, Construction, Operation, and End-of-Life. The study contributes a conceptual framework that visualises these alignments and highlights key opportunities and barriers for advancing circularity through digital transformation within the construction industry.

The findings highlight that Building Information Modelling and Internet of Things play pivotal roles in lifecycle planning, operational efficiency, and resource optimisation, while artificial intelligence and digital twins support predictive maintenance, material recovery, and closed-loop optimisation. In contrast, robotics and blockchain remain underutilised in manufacturing and deconstruction, representing significant untapped potential to advance circularity. Persistent challenges, including fragmented stakeholder collaboration, siloed practices, and slow technological adoption, continue to impede the sector's ability to fully realise circular economy ambitions.

Future research should focus on fostering early stakeholder engagement and promoting cross-phase integration of Construction four point zero technologies to enhance circular outcomes. Further studies are also needed to empirically validate the proposed framework across diverse project contexts and geographical settings. In addition, future research should examine the evolving role of emerging technologies, particularly artificial intelligence, in accelerating the transition towards circular construction and scaling sustainable innovation across the sector.

One. Introduction

The global construction industry is facing growing pressure to move away from traditional linear models that rely on intensive resource extraction and waste generation. In response, Circular Economy principles have gained traction as a transformative approach that seeks to close material loops, reduce environmental impact, and promote long-term sustainability through strategies such as reuse, recycling, repair, and regeneration across the asset lifecycle.

Complementing this shift, Construction four point zero, a subset of Industry four point zero, introduces advanced digital technologies that support the transition to circular construction. Technologies such as Building Information Modelling, the Internet of Things, Artificial Intelligence, robotics, and blockchain, enhance traceability, automation, data-driven decision-making, and stakeholder collaboration throughout the project lifecycle. These technologies collectively form a digital ecosystem capable of enabling circular construction practices in a more integrated and scalable manner.

Despite increasing interest, a major gap remains; there is currently no comprehensive framework that maps how Construction four point zero technologies can support Circular Economy principles across all phases of the construction lifecycle. This lack of structured guidance limits both theoretical insight and practical application for stakeholders. This study addresses that gap by proposing a structured, lifecycle-oriented framework that links Circular Economy principles to Construction four point zero technologies-highlighting their individual and synergistic potential to promote circularity in construction.

The study is guided by the following research questions:

One) How are the phases of the construction lifecycle examined in the context of circular economy principles within the existing literature?

Two) What phase-specific strategies for circular economy implementation are identified in construction research, and how do these strategies support the core principles of circularity?

Three) How do Construction four point zero technologies correspond with circular economy principles throughout the construction lifecycle as reflected in the scholarly discourse?

The remainder of this article is structured as follows: Section Two reviews the relevant literature, highlighting gaps in existing Circular Economy frameworks and Construction four point zero integration. Section Three describes the methodology used in the system review. Section Four presents and discusses the findings, starting with an analysis of research trends and progressing to the core principles of the circular economy and their integration into distinct phases of construction. It further explores actionable circular economy strategies and examines the transformative role of Construction four point zero technologies in enhancing circularity through efficiency, transparency, and sustainability. Section Five concludes the paper by summarising the key contributions and outlining directions for future research.