Assessment of effectiveness of rejuvenator on artificially aged porous asphalt concrete

• Porous asphalt concrete was prepared from an artificially aged loose asphalt mixture.
• The aged porous asphalt concrete specimens were immersed in a rejuvenator.
• The rejuvenator didn’t change stiffness modulus of the aged porous asphalt concrete.
• The rejuvenator didn’t change fracture properties of the aged porous asphalt concrete.
• No rejuvenation of the rejuvenator was detected in this research.

The service life of porous asphalt pavements is limited due to raveling. Preventive maintenance to porous asphalt pavements by means of spraying rejuvenators on the pavement surfaces is considered as cost-effective. In the research of this paper, a loose asphalt mixture was artificially aged and then compacted. A rejuvenator was applied to the prepared porous asphalt concrete specimens. The stiffness modulus and indirect tensile strength of the specimens were measured using the indirect tensile tests. The results show that the application of the rejuvenator did not change the stiffness modulus and indirect tensile strength of the porous asphalt concrete specimens.