LCA of alternative granular materials – Assessment of ecotoxicity and toxicty for road case studies

Agnès Jullien (1) , Chantal Proust (2, 3) , O. Yazoghli-Marzouk (4)

1 IFSTTAR - Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux
2 ISTO - Institut des Sciences de la Terre d'Orléans - UMR7327
3 Biogéosystèmes Continentaux - UMR7327
4 Cerema Direction Centre-Est - Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement - Direction Centre-Est

This paper assesses alternative granular material use as regards ecotoxicity and toxicity. Stockpiling and use in various roads are considered. Leachates datasets of materials and field tests are collected from literature, the study is focused on MSWI BA, RAP and FS. LCIs due to leaching and percolation are built. Corresponding impacts were determined using a mid-point method: the EP TP results exhibit significant differences between the resources in favour of including such impact to LCA for recycling assessment. A model to allocate all the leaching potential to the alternative resource is proposed and discussed for better assessment within LCA framework.

Mots clés: LCA Alternative materials Ecotoxicity Toxicity Impacts Road

Domaines: Planète et Univers [physics]

Agnès Jullien, Chantal Proust, O. Yazoghli-Marzouk. LCA of alternative granular materials – Assessment of ecotoxicity and toxicty for road case studies. Construction and Building Materials, 2019, 227, 116737 (7 p.). ⟨10.1016/j.conbuildmat.2019.116737⟩. ⟨insu-02281334⟩