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This paper evaluates the potential of semantic technologies to facilitate building material circulation in the construction industry within the Circular Economy (CE) context. It suggests building material passports as a data source for the materials to be circulated and then integrates them by means of Linked Data. A common language is proposed to combine and re-use the material data in the CE with the creation of two ontologies: Circular Exchange Ontology (CEO) and the Circular Materials and Activities Ontology (CAMO). The ontologies annotate materials under a CE classification scheme and describe the elements required for material exchange to occur: actors, the activities they perform and the referents of these activities (resources, products, tools and waste). An evaluation of the ontologies is made by means of use case-driven SPARQL queries. Further, a wide-scale evaluation addresses how a decentralized data ecosystem can enable users to publish information and dynamically interact with different repositories to exchange materials. Results indicate that these ontologies can foster a circulation medium between diverse construction industry resources. Future work contemplates validation of both ontologies in a real-world-setting with computer scientists and companies in the construction sector in the Benelux area.
Keywords
BIM, linked data, circular economy, circular building, semantic web

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Chicago
Sauter, Elke, Rob Lemmens, and Pieter Pauwels. 2018. “CEO & CAMO Ontologies : a Circulation Medium for Materials in the Construction Industry.” In Life Cycle Analysis and Assessment in Civil Engineering: Towards an Integrated Vision: Proceedings of the Sixth International Symposium on Life-Cycle, ed. Robby Caspeele, Luc Taerwe, and Dan Frangopol. London, UK: Taylor & Francis.
APA
Sauter, E., Lemmens, R., & Pauwels, P. (2018). CEO & CAMO Ontologies : a circulation medium for materials in the construction industry. In R. Caspeele, L. Taerwe, & D. Frangopol (Eds.), Life Cycle Analysis and Assessment in Civil Engineering: Towards an Integrated Vision: Proceedings of the Sixth International Symposium on Life-Cycle. Presented at the 6th International Symposium on Life-Cycle Civil Engineering , London, UK: Taylor & Francis.
Vancouver
1.
Sauter E, Lemmens R, Pauwels P. CEO & CAMO Ontologies : a circulation medium for materials in the construction industry. In: Caspeele R, Taerwe L, Frangopol D, editors. Life Cycle Analysis and Assessment in Civil Engineering: Towards an Integrated Vision: Proceedings of the Sixth International Symposium on Life-Cycle. London, UK: Taylor & Francis; 2018.
MLA
Sauter, Elke, Rob Lemmens, and Pieter Pauwels. “CEO & CAMO Ontologies : a Circulation Medium for Materials in the Construction Industry.” Life Cycle Analysis and Assessment in Civil Engineering: Towards an Integrated Vision: Proceedings of the Sixth International Symposium on Life-Cycle. Ed. Robby Caspeele, Luc Taerwe, & Dan Frangopol. London, UK: Taylor & Francis, 2018. Print.
@inproceedings{8604544,
  abstract     = {This paper evaluates the potential of semantic technologies to facilitate building material circulation in the construction industry within the Circular Economy (CE) context. It suggests building material passports as a data source for the materials to be circulated and then integrates them by means of Linked Data. A common language is proposed to combine and re-use the material data in the CE with the creation of two ontologies: Circular Exchange Ontology (CEO) and the Circular Materials and Activities Ontology (CAMO). The ontologies annotate materials under a CE classification scheme and describe the elements required for material exchange to occur: actors, the activities they perform and the referents of these activities (resources, products, tools and waste). An evaluation of the ontologies is made by means of use case-driven SPARQL queries. Further, a wide-scale evaluation addresses how a decentralized data ecosystem can enable users to publish information and dynamically interact with different repositories to exchange materials. Results indicate that these ontologies can foster a circulation medium between diverse construction industry resources. Future
work contemplates validation of both ontologies in a real-world-setting with computer scientists and companies in the construction sector in the Benelux area.},
  author       = {Sauter, Elke and Lemmens, Rob and Pauwels, Pieter},
  booktitle    = {Life Cycle Analysis and Assessment in Civil Engineering: Towards an Integrated Vision: Proceedings of the Sixth International Symposium on Life-Cycle},
  editor       = {Caspeele, Robby and Taerwe, Luc and Frangopol, Dan},
  isbn         = {9781138626331},
  language     = {eng},
  location     = {Ghent, Belgium},
  pages        = {8},
  publisher    = {Taylor \& Francis},
  title        = {CEO \& CAMO Ontologies : a circulation medium for materials in the construction industry},
  year         = {2018},
}