Conventional element-centric BIM-LCA integration omits temporary works and faces semantic barriers, causing significant carbon underreporting. We propose a dynamic ontology-driven framework to overcome this. Its semantic core is a novel System-Element-Process-Resource-Carbon ontology, shifting assessment from static elements to context-aware construction processes. An automated pipeline transforms OpenBIM data into a carbon knowledge graph, capturing permanent and temporary emissions. A neuro-symbolic multi-agent system enables natural language querying and scenario simulation for interactive decision support. The framework ensures more complete and automated carbon accounting and establishes a semantic foundation for data continuity across the project lifecycle.
This paper addresses the tension between blockchain’s technical potential and the need for legal compliance in highly regulated property markets. Drawing on Institutional Cryptoeconomics, we propose a hybrid governance architecture for real estate transactions in Belgium that complements, rather than replaces, existing legal frameworks. The system combines smart contracts for automated escrow and settlement, an AI-based assistant to reduce ex ante coordination costs, and civil notaries as institutional oracles for legal validation. By embedding algorithms within mandated structures, this “trustworthy” governance model aims to reduce transaction costs while ensuring regulatory alignment, offering a scalable template for adoption in real estate.
Scotland’s construction industry operates at a circularity rate of just 1.3%, despite construction accounting for approximately 50% of all material consumption. The European Union’s Construction Products Regulation and the Ecodesign for Sustainable Products Regulation mandate Digital Product Passports (DPPs) for construction materials, assuming linear supply chains, with no governance model for reclaimed materials re-entering circulation. This paper addresses this gap by applying Ostrom’s principles for commons governance to a blockchain-based digital marketplace for construction material reuse. We employ hybrid methods to propose a prototype architecture of seven smart contracts designed for EU DPP compliance
Building on the concept of digital threads in manufacturing, we introduce a blockchain-verified 3DPC specimen passport serving as an unforgeable digital ID, adding traceability and trust to 3DCP. The passport utilises a decentralised ledger and smart contracts to cryptographically anchor a lifecycle data record, creating an immutable, auditable chain of custody from digital design to 3DPC grade. By implementing the tamper-proof logging of process parameters, sensor data, and final grade, this work aims to address one of the core challenges of 3DCP standardisation. The specimen passport is a tool for compliance and data-driven certification, fostering the industrial adoption of 3DCP.
Buildings significantly contribute to global energy consumption, especially in France and Europe, making their optimization crucial for addressing climate change. Integrating Building Performance Simulations (BPS) with Internet of Things (IoT) systems offers a promising solution for efficient energy management. While IoT systems enable real-time monitoring and control, they often miss complex physical phenomena like thermal dynamics. BPS fills this gap using mathematical models. However, interoperability is essential for effective collaboration. This paper presents the Web of Simulations Ontology (WoSO) to address these challenges, demonstrating its application in a pilot office building in France for the European BuildON project.
