This report discusses the implementation of a pavement condition rating (PCR) procedure to sample sections of the road network system. The resources needed are identified for such implementation. The uses of PCR data at the network and project level are also identified. The report stresses the development of a data base for integration of the various engineering systems for pavement management ...

IN T R O D U C T IO N It is generally agreed that a wet pavement surface presents less resistance to skidding than does the same surface in a dry condition. It is also well known that ice and snow are very slippery; but on the other hand, they are special conditions which do not reflect any skid characteristic of the pavement surface. It is, therefore, the wet surface condition that is critical...

The void at the bottom of a cement concrete slab is common problem composite pavements. It great significance to evaluate spring stiffness, size, and soil base elastic modulus timely accurately for maintenance guarantee pavement performance. In this paper, joint modeled load transfer mechanism realized by using groups simulating dowels that connect two slabs joint. A database established based ...

The purpose of this study is to build the binary logit model of an airport pavement that could monitor the pavement condition in near real time using microwave remote sensing satellite, then the relationship between the international roughness index (IRI) of an airport and backscattering values from PALSAR images of the ALOS satellite was determined. Total 390 data were used in analysis. This m...

Ultraviolet radiation is the main cause of degradation in asphalt pavement. To improve performance pavement used strong ultraviolet (UV) region western plateau, China, this study explores effects adding nano-montmorillonite and carbon black to SBS-modified asphalt. Through conventional index detection, dynamic shear rheological tests, low-temperature bending creep UV aging high- performance, fa...

Highways and in particular their pavements are the fundamental components of the road network. They require continuous maintenance since they deteriorate due to changing traffic and environmental conditions. Monitoring methods and efficient pavement management systems are needed for optimizing maintenance operations. Pavement performance prediction models are useful tools for determining the op...

Spending costs in construction of road pavements has turned this subject into one of the significant points in transportation infrastructure of countries. Concrete slabs consider as a paving method with ability of reducing the rehabilitation needs. Therefore, to manage costs and optimize the thickness of concrete pavements, recognizing the amount of determinative factors’ influence will be requ...

Plastids are multifunctional, pleomorphic organelles of purported endosymbiotic origin that in plants and green algae display a characteristic double membrane envelope (Wise, 2007). All plastids originate fromcolorless proplastids, and a simple pigmentation-based classification distinguishes chloroplasts from other plastids by the presence of chlorophyll, chromoplasts by the predominance of oth...

Reduction in vehicle fuel consumption is one of the main benefits considered in technical and economic evaluations of road improvements considering its significance. Surface roughness, texture, and structural response are the main pavement characteristics influencing rolling resistance. This project investigates the increase in vehicle energy consumption caused by the structural response of a c...

A pavement structure consists of several layers for the primary purpose of transmitting and distributing traffic loads to the subgrade. Rutting is one form of pavement distresses that may influence the performance of road pavements. Geosynthetics is one type of synthetic materials utilized for improving the performance of pavements against rutting. Various studies have been conducted on using d...