Effects of the use of construction and demolition waste aggregates in cold asphalt mixtures

• Cold asphalt mixtures containing CDW as aggregate were studied.
• UCS, ITS and ITSM results improved by introducing CDW in the mixes.
• Mixtures containing CDW aggregates perform better against moisture and temperature.
• Classical design methods become inaccurate with CDWA cold mixes.
• The Addition of CDW to cold asphalt mixes is an effective tool of sustainable engineering.

Cold asphalt mixtures (CAM) with 100% recycled aggregates from construction and demolition waste (CDW) were researched to ecologically and economically improve cold asphalt mixtures. The present study indicates that the UCS, ITS, ITSM and moisture susceptibility were very satisfactory not only compared with a control mix with 100% natural aggregates (NA) but also with values given by different standards and recommendations. A new global approach to design these aggregates has also been explored because conventional methods are inaccurate in this case.