دانلود ترجمه مقاله آسفالت های بتنی پیش ساخته

Precast slabs are considered an advantageous repair method for extending the service life of distressed concrete pavement. Benefits include long life expectancy of concrete slabs cast in factory-controlled conditions and the fact that fully cured precast slabs can potentially be put into use almost immediately upon installation, making them attractive for use on heavily traveled highways where work windows for full-depth repairs are short. These benefits can only be realized if precast slabs are constructed and installed with proper materials and adequate supervision, as there are many factors that can affect the structural and functional life of this increasingly popular type of pavement. This paper describes the evolution of precast concrete pavements in various countries and, in particular, in the United States. The design, construction, and installation of a particular system of precast slabs called Super-Slab™, is explained, and an overview of the results of accelerated load testing with a heavy vehicle simulator (HVS) recently performed in California are presented. The general conclusion is that the use of precast slabs for concrete pavement rehabilitation is being seriously evaluated in the United States at various levels, and it is being considered favorably by the Federal Highway Administration, American Association of State Highway and Transportation Officials, and various State and other highway agencies. There is also growing interest in this technology in other countries.