Effects of moisture on warm mix asphalt containing Sasobit

Abstract

Abstract. The asphalt industry has been at the forefront of sustainable development.Warm Mix Asphalt (WMA) has been developed to cope with issues such as high energy prices and air pollution. These mixes require less energy and generate fewer pollutants during production in comparison with conventional Hot Mix Asphalt (HMA). Although a promising technology, the durability of WMA is not clear because long-term WMA eld performance data is limited. This study investigated the susceptibility of Sasobit-modi ed WMA to moisture, since moisture damage is a major cause of premature pavement failure in asphalt concrete. To this end, WMA samples were made using di erent concentrations of Sasobit and the results were compared with those from HMA mixtures. The e ect of hydrated lime as an anti-stripping agent was also investigated. The tensile strength ratios indicate that the introduction of hydrated lime and Sasobit increased the resistance of asphalt mixtures to moisture. Fracture energy and toughness were used to evaluate the crack resistance of specimens under dry and wet conditions. In comparison with Sasobit, hydrated lime increased crack resistance of mixtures. The results indicate that hydrated lime can be used as a compatible and e ective anti-stripping agent for WMAs containing Sasobit.

PZT-based Antiferroelectric Material Based on Building Roof Film Rolling Process and Preparation Method Thereof

“…The measured sample can also be plated with an electrode and directly connected to the impedance analyzer for measurement. Because the added test voltage is not very large, it does not need to consider the change of the physical structure and properties of the material, which is superior to other test methods; At the same time, the measurement of more than 100 frequency points of 480 orders of magnitude can be completed in one hour, which is faster [15]. When the dielectric is in the external electric field, assuming that the external electric field is…”