In order to study the self-healing performance of macroscopic fractures asphalt mixtures, semicircular bending (SCB) tests were used test 90# base SBS (Styrene–Butadiene–Styrene) modified and + CR (Chloroprene Rubber) composite mixtures. The F-H-F (the mixture specimen was fatigued for a certain number times, then healed under conditions, until destroyed) carried out, fatigue life recovery rate...

Abstract Recycling pavements is beneficial on various levels, since using reclaimed asphalt (RA) has a positive effect the economy and environmental protection at same time. Removed old pavement no longer considered as waste material, which to be landfilled, but useful material for further applications. Leading reduction of need virgin materials preserve planet. At start, RA was used constructi...

Traditional LCA of central plant hot recycling shows that, the higher RAP added, the less energy consumed. This conclusion is mainly based on the calculation of reduced raw material. However, when the content of Reclaimed asphalt pavement mixture (RAP) reaches some level, it is needed to take measures such as using additive or improved construction method for maintain the performance of asphalt...

A laboratory study was made of the effects of crushed particles, both coarse and fine aggregate, on the stability of bituminous-aggregate mixtures. Crushed limestone and varying percentages of crushed and uncrushed gravel were used as the coarse aggregate while variation in the shape of the fine aggregate was obtained by using rounded natural sand and crushed-stone sand. These aggregates were u...

The primary objective of this research is to evaluate the feasibility of several WMA mixtures as potential asphalt paving mixtures for Nebraska pavements. To that end, three well-known WMA additives (i.e., Sasobit, Evotherm, and Advera synthetic zeolite) were evaluated. For a more realistic evaluation of the WMA approaches, trial pavement sections of the WMA mixtures and their HMA counterparts ...

Warm-Mix-Asphalt (WMA) allows aggregates to be coated with asphalt binder at a temperature lower than the Hot-Mix-Asphalt (HMA) temperatures by using additives that make mixtures more workable and viscosity reduced. Due cost environmental advantages of WMA, it is now frequently employed in pavement. WMA two percentages zeolite (0.3% 0.5%) used this research. The optimum content has value compar...

Asphalt road reflectance spectra change as pavement ages. This provides the possibility for remote sensing to be used to monitor a change in asphalt pavement conditions. However, the relatively narrow geometry of roads and the relatively coarse spatial resolution of remotely sensed imagery result in mixtures between pavement and adjacent landcovers (e.g., vegetation, buildings, and soil), incre...