نتایج جستجو برای: asphalt pavements
تعداد نتایج: 8113 فیلتر نتایج به سال:
Cold-in-place recycling (CIR) is an environmentally sustainable alternative for preservation of asphalt pavements. A major disadvantage of this practice is the lower strength of the cold-in-place mixtures. Addition of cement into this type of mixture is a method for increasing its bearing capacity. The effect of cement content on the mechanical properties of the cold-in-place recycled asphalt m...
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...
In this paper, three-dimensional elasto-plastic finite element analysis was performed on flexible pavements under vertical repeated traffic loads to evaluate their shakedown behavior. Six different pavements with different structural number (SN) were modeled and subjected to a wide range of cyclic vehicle loads. Shakedown limits were obtained considering both failure and serviceability restrain...
Laboratory performance of porous asphalt mixtures containing Ethylene Propylene Diene Monomer - EPDM
Porous asphalt pavements are environmentally friendly permeable road pavements. There is a need to improve the strength performance of porous mixtures. Waste Ethylene Propylene Diene Monomer (EPDM) rubber modification mixtures investigated in this study. The mixture was initially designed for selected mix aggregate gradation. EPDM scraps were replaced with filler materials at rate 2 % and 4 tot...
Rutting is one of the major distresses in the flexible pavements, which is heavily influenced by the asphalt mixtures properties at high temperatures. There are several methods for the characterization of the rutting resistance of asphalt mixtures. Flow number is one of the most important parameters that can be used for the evaluation of rutting. The flow number is measured by the dynamic creep...
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, ...
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