There are some places such as bridges in the heavily industrialized area where the pavement should have a strong resistance against heavy axle loading and waterproof function. In those places, many polymer-modified asphalt (PMA) pavements were applied to protect premature cracking, severe rutting and water intrusion without success. This study evaluated important properties of the special type asphalt concrete (AC) mix which is highly condensed to be almost void-free condition developed for those places. A PMA binder (PG82-34) was used for the mix at target air void of 0% in the mix design. The strength against deformation (SD) was measured by Kim Test at 60C. The flexural strength and fracture toughness were measured at -20C, and the resistance against reflection cracking at 25C. The void-free AC mix showed best performance in all four properties. Therefore, the void-free AC can be applied for heavy duty bridge pavement where waterproofing function and higher rutting and cracking resistance are required.

polymer-modified asphalt, SIS, deformation strength, tensile strength, fracture toughness