Compactability and mechanical properties of cold recycled mixes prepared with different nominal maximum sizes of RAP

The use of cold recycled asphalt mixtures (CRM) has been soaring during recent years. Reclaimed Asphalt Pavement (RAP) is the main component CRM, and despite numerous studies on impact different RAP types not deeply studied. This study compares volumetric several mechanical properties CRM prepared with from two sources various nominal maximum sizes (NMS). mix design was fixed, specimens were using gyratory compactors. Densities measured before after accelerated curing. Stiffness investigated Indirect Tensile Modulus, tension–compression, dynamic tests. Additionally, cracking behavior evaluated Strength Semi-Circular Bending particle size distribution a key factor in compactability CRMs Together temperature, most influential studied air void content, while differences NMS showed no clear trends.