LIFE CYCLE ANALYSIS OF RECYCLED MATERIALS FROM CONSTRUCTION AND DEMOLITION WASTE (CDW) PROVIDED BY TRANSPORT INFRASTRUCTURES

Author(s): Freire, A. C. , Neves, J. (2), Martins, I. , Roque, A. J. , Correia, E. , Ferreira, C. , Vieira, C. S. , Pinto, M. I. M. , Gonçalves, J.
Paper category: Proceedings
Book title: IV International Conference Progress of Recycling in the Built Environment
Editor(s): Isabel M. Martins, Carina Ulsen, Yury Villagran
ISBN:
e-ISBN: Isabel M. Martins, Carina Ulsen, Yury Villagran
Publisher: RILEM Publications SARL
Publication year: 2018
Pages: 226-233
Total Pages: 08
Language : English

Abstract: Recycling CDW is the solution for an efficient management in civil engineering works,
contributing to the preservation of natural resources. Bound and unbound pavement layers are
an option for the use of recycled materials. The recovery of waste produced during pavements
life cycle is required due to the present demand and future foreseeable shortage of resources,
the need to preserve the environment and the goal of “zero landfill”. It is necessary to evaluate
the materials that constitute the road pavements to be used in maintenance and rehabilitation
operations. Based on the results obtained in a study carried out on a national road, this paper
evaluates the quantities and associated costs of CDW produced during the pavement
maintenance and rehabilitation and CDW recycling potential as secondary materials for
transportation infrastructures taking into consideration the life cycle of the pavement. Given
the objectives of a circular economy, the environmental impact of the interventions carried
out throughout pavement life cycle is presented, by quantifying the consumed energy and its
equivalent as Carbon Footprint (CF). It was concluded that the increase of the CDW recycling
rate has a great impact in the budget of pavement rehabilitation, as well as in CO2 emissions.

Online publication : 2018
Publication type : full_text
Public price (Euros) : 0.00