[01] Saad Issa Sarsam, Department of Civil Engineering, College of Engineering, University of Baghdad, Baghdad, Iraq. [02] Zainalabiden Nihad, Department of Civil Engineering, College of Engineering, University of Baghdad, Baghdad, Iraq.

The resilient characteristics is a measure to the flexibility of asphalt concrete. Asphalt concrete mixtures were prepared using the hot mix HMA and the warm mix WMA techniques. Specimens of 102 mm diameter and 63.5 mm height for hot mix were mixed and compacted using Marshal method at 150°C, while the two type of warm mixtures were mixed and compacted at 110°C using medium curing cutback and cationic emulsion. Specimens were subjected to repeated indirect tensile stresses ITS, and repeated double punch shear stress. Another group of specimens were subjected to moisture damage. A third group of specimens of 102 mm in diameter and 102 mm in height were tested under repeated compressive stress. Beam specimens 380 mm in length, 80 mm width and 50 mm height were prepared under static compaction to the same target density. The deformation (total, permanent and resilient) were monitored and the resilient modulus Mr under each testing technique was calculated. Higher Mr could be observed for HMA mixture under tensile and shear stresses when compared to the WMA mixtures, while the WMA shows higher Mr values than HMA under compressive and flexural stresses.

Warm Mix, Asphalt Concrete, Resilient, Modulus, Repeated Load, Deformation

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