Sustainable utilization of the bauxite residue (red mud) generated from alumina refining has recently increased due to environmental concerns because its high alkalinity and problematic pollutants when placed in landfills. This paper attempts review recent research findings utilizing red mud as a road material pavement structures literature, including bases asphalt mixtures. Previous laboratory...

This study explored the feasibility of lignin based biofuel co-product (BCP) for subgrade soil stabilization, and more specifically, its impact on Hot-Mix Asphalt (HMA) pavement performance using the Mechanistic-Empirical Pavement Design Guide (MEPDG). The HMA pavement systems with BCP stabilized subgrade under different traffic and climate conditions were modeled using mechanistic based damage...

Fall 2013 • Vol. 25 • No. 2 The exceptional fatigue and rutting resistance observed in section N7 made HiMA the material of choice in rehabilitating a nearby pavement test section that was completely failed. Oklahoma’s section N8 has a soft subgrade representative of native Oklahoma soil. The section was originally constructed in 2006 with 10 inches of asphalt over a stiff soil base, simulating...

High modulus bitumens modified by polystyrene-block-polybutadiene-block-polystyrene (SBS) with different molecular structure were investigated on dynamic shear rheometer and fluorescence microscopy to evaluate viscoelastic properties and morphology of binders. The results shows that storage modulus (G’) is obviously less than loss modulus (G”), which means viscous behaviour of bitumen is domina...

Aggregates constitute major part of the pavement structure. The engineering properties of the aggregates, as well as its shape (i.e. form and angularity) and texture, substantially affect the overall performance of the pavement (Kuo and Freeman 1998, Maerz 2004). A number of researchers reported that form and surface texture of aggregates have significant effect on the mechanical property of th...

This study investigates the field performance of Warm Mix Asphalt (WMA) road overlays containing various amounts RAP and binder. Rutting, International Roughness Index (IRI), transverse, longitudinal alligator cracking are key parameters considered here. Our research is based on a Specific Pavement Study-10 experiment (SPS-10) conducted in nine states North America (eight USA one Canada) that i...

The Hamburg wheel tracking test (HWTT) is a widely used testing procedure designed to accelerate and simulate the rutting phenomena in laboratory. Rut depth, as one of outputs HWTT, dependent on number parameters related mix design conditions. This study introduces new model for predicting depth asphalt mixtures using deep learning technique - convolution neural network (CNN). A database contai...