https://orcid.org/0000-0002-7940-2648
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Abstract
The assessment of performance is vital to ensure confidence in recycled materials. This paper presents a technical and environmental feasibility study of using reclaimed asphalt pavement (RAP), processed by milling and crushing, in pavement unbound granular layers. An experimental programme was undertaken to address the geometrical, physical, mechanical and environmental properties. The crushed RAP showed the best performance whereas milled RAP has had to be mixed with a natural aggregate to improve its properties. The laboratory and lysimeter leaching tests indicated that RAP does not pose environmental risk. The overall results highlighted the viability of using both RAP types for the aforementioned purpose.
Acknowledgements
The authors wish to thank the companies “Ambigroup SGPS SA” and “Teodoro Gomes Alho SA” (Portugal) for supplying the tested materials.
ORCID
Ana Cristina Freire http://orcid.org/0000-0002-7940-2648
José Manuel Coelho das Neves http://orcid.org/0000-0002-7131-7967
António José Roque http://orcid.org/0000-0003-4467-0164
Maria de Lurdes Antunes http://orcid.org/0000-0002-1911-517X