Suitable evaluation of distress is beneficial to understanding the in situ performance deck pavement. This study attempts evaluate long-term American ChemCo epoxy asphalt concrete on Xihoumen Bridge (XHMB) after 12 years service. The traditional indexes were adopted reveal XHMB. Then, based typical distresses, a new pavement index (PPI) was proposed characterize authentic condition. Finally, an...

Wireless Weigh-In-Motion: using road vibrations to estimate truck weights by Ravneet Singh Bajwa Doctor of Philosophy in Electrical Engineering and Computer Science University of California, Berkeley Professor Pravin Varaiya, Chair Vehicle count and weight data plays an important role in traffic planning, weight enforcement, and pavement condition assessment. This data is primarily obtained thr...

The new AASHTO Mechanistic–Empirical Pavement Design Guide (MEPDG) provides pavement analysis and performance predictions for various feasible design scenarios. The MEPDG performance predictions for the anticipated climatic and traffic conditions depends on the values of the input parameters that characterize the pavement materials, layers, design features, and condition. This paper focuses on ...

Hot-in-place recycling of asphalt pavement is one the important regeneration technologies engineering, which apply to pavements with fewer diseases, excellent driving quality, slight rutting, and good structural strength. However, surface layer some road sections was aging, penetration index aged at 25°C lower than 20(0.1mm), does not meet recommended requirements criterion in China. In 2019, 3...

pavement materials have great impact on heat island control under the urban canyon layer. understanding the properties of pavement materials can help to reduce the heat island effect. introducing the main properties of pavement surfaces affecting sol-air temperature and mean radiant temperature - such as albedo, permeability, conductivity, thickness, emissivity, irradiation and convective air f...

The principles underlying current mechanistic–empirical pavement design methods for fully flexible pavements have changed little in the past 30 years. They generally use linear elastic theory to determine the permissible strain at critical locations in the pavement structure to safeguard the road against excessive fatigue and structural deformation. These criteria are calibrated using performan...

Backanalysis or backcalculation of in-service pavement mechanical properties (such as elastic modulus) from pavement Non-Destructive Test (NDT) deflection data is a routine practice carried out by highway engineers for pavement structural condition evaluation, remaining life calculations, and mechanistic-based analysis. Owing to the complexity of this ill-conditioned inverse modeling problem, n...