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  4. Road Construction with Reduced Environmental Impacts: Performances and Innovative Evaluation Method
 
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conference paper not in proceedings

Road Construction with Reduced Environmental Impacts: Performances and Innovative Evaluation Method

Bueche, Nicolas  
•
Dumont, André-Gilles  
2012
BIT's 1st Annual World Congress of Greentech

As a substantial source of greenhouse gas (GHG) emissions and energy consumption, the road construction domain has to bring a contribution to the reduction of the environmental impacts. Indeed, an important part of the energy consumption and consequently environmental emissions can be attributed to the construction phase of the roads. During the production and compaction phases, a low viscosity of the bituminous mixture is required and this generally necessitates a temperature above 150 °C (hot mix asphalt - HMA). In order to reduce the environmental impacts, various types of warm mix asphalt (WMA) have been developed during the last fifteen years. The uses of these mixtures is however still limited in Europe, in particular because of the lack of knowledge concerning the performances, and the difficulty of choice between numerous products. The presentation will firstly describe the major technologies and performances that can be expected. A model for the choice of the most adapted technology will then be introduced. Indeed, the choice of the most favorable mixture for a given project is not necessarily straightforward and few of the GHG calculators currently available are able to perform a comparison at the asphalt mixture scale – despite the clearly important effects of the asphalt mixture type. The developed multi-criteria methodology takes into account various aspects such as mechanical performance and other qualitative criteria. The proposed model finally helps the road owner in his decision making process and optimizes the environmental impacts reduction.

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Type
conference paper not in proceedings
Author(s)
Bueche, Nicolas  
•
Dumont, André-Gilles  
Date Issued

2012

Subjects

road construction

•

energy

•

greenhouse gas emissions

•

environment

•

environmental impacts

•

bituminous mixture

•

warm mix asphalt

•

evaluation method

Peer reviewed

NON-REVIEWED

Written at

EPFL

EPFL units
LAVOC  
Event nameEvent placeEvent date
BIT's 1st Annual World Congress of Greentech

Baiyun, Chine

October 19-21,2012

Available on Infoscience
July 24, 2014
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/105237
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