Effect of the recycling process and binder type on bituminous mixtures with 100% reclaimed asphalt pavement

• Published in: Construction & building materials 2018-04, Vol.167, p.440-448
• Main Authors: Nosetti, Adrián, Pérez-Madrigal, Domingo, Pérez-Jiménez, Félix, Martínez, Adriana H.
• Format: Article
• Language: English
• Subjects: Analysis; Asfalt; Asphalt pavements; Asphalt recycling temperatures; Bituminous materials; Bituminous mixture; Concrete cracking; Cracking resistance; Enginyeria civil; Fénix test; Half-warm recycled mixture; Infraestructures i modelització dels transports; Mechanical properties; Reciclatge; Temperature; Thermal properties; Transport per carretera; Waste management; Àrees temàtiques de la UPC
• ISSN: 0950-0618; 1879-0526
• DOI: 10.1016/j.conbuildmat.2018.02.042

•Three different recycling temperatures were compared in terms of cracking resistance.•Fénix test was used at different temperatures to evaluate the cracking resistance.•Hot and Half-warm recycled mixtures showed similar stiffness and ductility.•The ductility of hot and half-warm recycled mixtures was critical below 12 °C.•Cold recycled mixtures had the highest ductility and the lowest stiffness. There is a great interest in increasing the amount of recycled material used in asphalt mixes because of the beneficial impact on the environment. This is leading to the development of different recycling procedures, from cold in-situ to hot in-plant recycling. The objective of the study presented in this paper is to evaluate cracking resistance of recycled mixes manufactured by three types of processes, i.e., cold with emulsion, hot with high penetration bitumens and hot with emulsion (half-warm mixture), using 100% of reclaimed asphalt pavement (RAP) at different temperatures. Differences in their workability and ease of use are also analysed by gyratory compaction.