Les pŽtroles bruts contiennent de nombreux constituants Ñ dont les asphaltnes Ñ qui peuvent tre adsorbŽs sur les surfaces minŽrales et modifier leurs caractŽristiques de mouillage. Ce qui distingue les asphaltnes des autres constituants de l'huile est leur tendance ˆ s'agrŽger et mme ˆ se sŽparer du pŽtrole en rŽaction ˆ des modifications du pouvoir solvant du pŽtrole. Du fait qu'ils change...

Asphalt concrete pavements in hot and dry climates deteriorate prematurely some time after their construction. This degradation is accelerated under the effect of heavy vehicle traffic pressure high temperatures bitumen has softened. A study was conducted on RN1 Burkina Faso order to analyze evolution temperature process asphalt pavements. It consisted one hand recording at different points ins...

Cold-applied asphalt mixtures are often used for pavement repair, primarily because of the small quantities involved and/or the unavailability of hotmixed asphalt. These cold-applied mixtures have poorer rutting resistance than hot mix asphalt because additives, often solvent, are required to provide adequate workability for them to be placed at ambient temperatures. This study primarily evalua...

background: asphalt workers are exposed to dangerous agents in his workplace that might result in occupational diseases. benzo (a) pyrene as a human carcinogen, is emission from hot asphalt and asphalt workers are exposed with it. the aim of this study was, evaluation of respiratory exposure to benzo (a) pyrene among asphalt workers. method: in this study, 42 samples were collected from breathi...

BACKGROUND Hippotherapy uses horseback riding movements for therapeutic purposes. In addition to the horse's movement, the choice of equipment and types of floor are also useful in the intervention. The quantification of dynamic parameters that define the interaction of the surface of contact between horse and rider provides insight into how the type of floor surface variations act upon the sub...

Each of pavements’ life cycle phases such as material extraction, transportation, construction, operation, rehabilitation, and end-of-life emits greenhouse gases. Such emissions can be influenced by climate change via changes in the rates of pavement deterioration and thus intensity and frequency of maintenance and rehabilitation. However, climate change has not been given full considerations i...

This study investigated the effect of high asphalt binder replacement for a low N-design asphalt mixture including RAP and RAS on performance indicators such as permanent deformation, fracture, fatigue potentials, and stiffness, was studied. An experimental program included complex modulus, fracture, overlay reflective cracking resistance, wheel track permanent deformations, and push-pull fatig...

A key factor for safe and comfortable driving on roads are properly reflective well visible pavement surfaces at night. The brightness of the road surface depends amount light falling it reflection properties any point. luminance its physical condition, age type pavement, direction illumination, observation conditions. Different pavements can have different characteristics that depend texture, ...