Life cycle assessment of bituminous pavements produced at various temperatures in the Belgium context |
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| Institution: | 1. Faculty of Applied Engineering Sciences, University of Antwerp, Rodestraat 4, 2000 Antwerp, Belgium;2. Faculty of Applied Economic Sciences, University of Antwerp, Prinsstraat 13, 2000 Antwerp, Belgium;1. Slovenian National Building and Civil Engineering Institute, Dimičeva ulica 12, 1000 Ljubljana, Slovenia;2. Structum d.o.o., Tovarniška cesta 26, 5270 Ajdovščina, Slovenia;1. DICAM – Dipartimento di Ingegneria Civile, Ambientale, Aerospaziale e dei Materiali, Scuola Politecnica, Università degli Studi di Palermo, Palermo, Italy;2. DEIM – Dipartimento di Energia, Ingegneria dell’Informazione e Modelli Matematici, Scuola Politecnica, Università degli Studi di Palermo, Palermo, Italy;1. Department of Civil Engineering: Transport, School of Civil Engineering (E.T.S.I.C.C.P.), Technical University of Madrid (UPM), Calle Profesor Aranguren s/n, 28040 Madrid, Spain;2. ISA, School of Physics, A28, The University of Sydney, NSW 2006, Australia;1. School of Transportation, Southeast University, Nanjing, 210096, China;2. College of Engineering, Tibet University, Lhasa, Tibet, 850011, China;1. School of Civil and Mechanical Engineering, Curtin University, Perth, WA 6845, Australia;2. Department of Civil and Environmental Engineering, United Arab Emirates University, Al Ain, United Arab Emirates;1. Department of Civil Engineering, University of Minho, 4800-058 Guimarães, Portugal;2. C-TAC, Department of Civil Engineering, University of Minho, 4800-058 Guimarães, Portugal |
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| Abstract: | Bituminous mixture is the premier material for road construction in Belgium. Innovative technologies to improve energy efficiency of pavement constructions are necessary. Warm mix asphalt may provide significant energy savings to the asphalt industry, but the environmental impact of the total life cycle has to be investigated. The use of additives may counteract the reduced environmental impact due to energy savings. This paper presents the results of an environmental impact assessment of four wearing course test sections. Using life cycle assessment, hot mix asphalt is compared to a cold asphalt mix with emulsion and warm mix asphalt with two types of additives: a synthetic zeolite and an organic Fischer–Tropsch wax. Neither hot nor warm mix asphalt could be preferred based on the results of this study, because the additive has a major influence on the environmental results. It was seen that the production of bitumen, the transport and energy in order to generate heat mainly contribute to the total environmental impact. The results from the sensitivity analyses show that the total environmental impact of the life of the pavement can vary significantly based on the choice of the specific data source and service life. |
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| Keywords: | Life cycle assessment (LCA) Warm mix asphalt (WMA) Hot mix asphalt (HMA) Additives Sensitivity analysis Contribution analysis |
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