The use of cold recycled asphalt mixtures (CRM) has been soaring during recent years. Reclaimed Asphalt Pavement (RAP) is the main component CRM, and despite numerous studies on impact different RAP types not deeply studied. This study compares volumetric several mechanical properties CRM prepared with from two sources various nominal maximum sizes (NMS). mix design was fixed, specimens were us...

The use of reclaimed asphalt pavement (RAP) is increasing importance due to fast-growing amounts demolished road materials. However, can contain relevant pollutants such as carcinogenic polycyclic aromatic hydrocarbons (PAHs) and toxic metals. In order improve the mechanical properties recycled asphalt, rejuvenators are used reduce stiffness aged binder. These in turn may potentially mobilise l...

The Fremont Bridge is steel tied arch bridge over the Willamette River in Portland, Oregon. It carries traffic on Interstate 405 and US Highway 30 between downtown and north Portland. . The bridge was constructed in 1973, and the paving on the original steel deck consisted of epoxy asphalt concrete followed by an asphalt concrete overlay. The pavement performed for nearly 40 years before it nee...

Properly designed and maintained asphalt pavements operate for ten to twenty-five years have be rehabilitated after that period. Cold in-place recycling has priority over all other rehabilitation methods since it is done without preheating transportation of reclaimed pavement. Multiple researches on the performance cold recycled mixtures been done; however, unclear how entire pavement structure...

This study analyses the possibilities of using up to 30% reclaimed asphalt pavement as a substitute material for natural aggregate, along with fly ash replacing 20% or 40% Portland cement in stabilizations 4% and 6% binder. The Proctor test was used determine maximum dry density optimal moisture content cement-based stabilizations. compressive strength tested after 7, 28, 90 days. Parameters in...

The public, industry, and governments have become increasingly interested in green design and sustainable development. Construction activities affect the environment significantly, so environmental issues should be considered seriously. Thousands of miles of roads are paved every year with asphalt and steel-reinforced concrete. What are the environmental effects of the two materials? If asphalt...

In this study, an artificial neural network was developed in order to analyze flexible pavement structure and determine its critical responses under the influence of standard axle loading. In doing so, more than 10000 four-layered flexible pavement sections composed of asphalt concrete layer, base layer, subbase layer, and subgrade soil were analyzed under the impact of standard axle loading. P...

Reclaimed asphalt pavement (RAP) is considered one of the valuable alternatives to raw materials due reducing need use materials, which are less in some world regions. It additionally reduces highly-priced new bitumen required inside asphaltic mixture manufacturing and contributes preservation natural resources. To achieve maximum benefit from integration RAP mixture, it necessary investigate a...