نتایج جستجو برای: pavement design model
تعداد نتایج: 2885471 فیلتر نتایج به سال:
Pavement deterioration rate is very difficult to predict because of the complexities in determining the pavement condition rating or difficulty in collecting detailed data, particularly in absence of sophisticated equipment or trained staff etc. A wide variety of Pavement Maintenance Systems (PMS) are used, but unfortunately either these systems do not use a formalized procedure to determine th...
Road pavements have considerable environmental burdens associated with their initial construction, maintenance and usage, which has led the pavement stakeholder community make congregate efforts to better understand and mitigate these negative effects. Life cycle assessment (LCA) is a versatile methodology to quantify the effect of decisions regarding the selection of resources and processes. H...
An existing permanent deformation (PD) model for the unbound granular materials (UGMs) in pavements, developed based on multistage (MS) repeated load triaxial (RLT) tests, was modified to better suit field conditions and software applications. The calibrated a few UGMs with series of moisture contents (w) using MS (to include stress-history effect) RLT tests validated by predicting PD under dif...
Roadway pavement surface distress information is critical for effective pavement asset management, and subsequently, transportation management agencies at all levels (i.e., federal, state, and local) dedicate a large amount of time and money to routinely evaluate pavement surface distress conditions as the core of their asset management programs. However, currently adopted ground-based evaluati...
Pavement cracks are important information for evaluating the road condition and conducting the necessary road maintenance. In this paper, we develop CrackTree, a fully-automatic method to detect cracks from pavement images. In practice, crack detection is a very challenging problem because of (1) low contrast between cracks and the surrounding pavement, (2) intensity inhomogeneity along the cra...
The design parameters are one of the important factors to ensure quality asphalt pavement design. In “Highway Asphalt Pavement Design Specification” (JTGD50-2017), stander China, used mixture anti-pressure resilience modulus at a single temperature 20 ℃ as metrics. However, mixture, sticky-bullet plastic material, shows different mechanical properties temperatures. China is vast territory, and ...
Abstract This paper reviews innovation of green pavement technology for storm water management in an urban environment. can be related with hydrological performance and assessments the permeable pavement. Features typical are presented discussed. Topics covered include recognizing important pavement, stormwater benefit detailed properties design. The information this provides stakeholders overv...
Evaluating existing flexible pavement condition is a pre-requisite to choose improvement technique that has to be adopted to enhance its quality. To evaluate existing pavements, non-destructive testing methods are desirable. Benkelman Beam and 5th Wheel Bump Integrator are used to conduct non-destructive tests like deflection and roughness surveys on the existing pavement of 4 lane divided carr...
In the present investigation, an experimental study was conducted to evaluate the thermal stresses in rigid pavement. In pavements design, temperature differential is having dominant role across the depth at critical locations. Seasonal climate changes influences the characteristic of pavement track. The study influences the behavior of the pavement slab in a nonlinear manner. The critical stre...
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