A new awareness on sustainable materials and construction techniques is promoting field applications of cold bitumen emulsion mixtures. Cold in-plant recycling (CPR) techniques with bitumen emulsion ensure important benefits in terms of energy saving and amount of recycled materials while maximising the performance and production stability of mixtures. This study describes the construction of a pavement trial section where a cold-recycled asphalt mixture (CRAM) was placed as binder course. The CRAM was manufactured in-plant, using about 90% of reclaimed asphalt, bitumen emulsion and cement. The evolution of indirect tensile stiffness modulus (ITSM) was monitored on both laboratory-compacted specimens and cores extracted from the pavement. From the analysis of results, it can be affirmed that the increase of ITSM due to the curing process was faster for laboratory specimens with respect to field

FIELD BEHAVIOUR OF COLD-RECYCLED ASPHALT MIXTURES FOR BINDER COURSES

Chiara Mignini;Andrea Graziani
2019

Abstract

A new awareness on sustainable materials and construction techniques is promoting field applications of cold bitumen emulsion mixtures. Cold in-plant recycling (CPR) techniques with bitumen emulsion ensure important benefits in terms of energy saving and amount of recycled materials while maximising the performance and production stability of mixtures. This study describes the construction of a pavement trial section where a cold-recycled asphalt mixture (CRAM) was placed as binder course. The CRAM was manufactured in-plant, using about 90% of reclaimed asphalt, bitumen emulsion and cement. The evolution of indirect tensile stiffness modulus (ITSM) was monitored on both laboratory-compacted specimens and cores extracted from the pavement. From the analysis of results, it can be affirmed that the increase of ITSM due to the curing process was faster for laboratory specimens with respect to field
978-2-35158-223-7
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11566/267168
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