Design Of Overlays Based On Pavement Condition Roughness And Deflections
Download Design Of Overlays Based On Pavement Condition Roughness And Deflections full books in PDF, epub, and Kindle. Read online free Design Of Overlays Based On Pavement Condition Roughness And Deflections ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
| Author | : Kenneth H. McGhee |
| Publisher | : |
| Total Pages | : 54 |
| Release | : 1982 |
| Genre | : Pavements |
| ISBN | : |
Changing economic conditions have led to a need for more objective means of prioritizing pavement resurfacing needs and for determining the required thickness of resurfacings. Both of these issues have been addressed in the study for which this document constitutes the final report. Earlier reports on the study were directed at the development of a pavement maintenance rating system and a tentative method for designing the thickness of overlays. The present report is divided into two parts. The first deals with field trials and verification of the pavement rating system and the second with further development of thickness design procedures. Among the major findings of the study are : 1. An objective rating system can be used to provide a common basis of comparison of pavements between various raters. 2. Methods for designing the thickness of overlays based on the volume of traffic and the existing pavement structure, or on a combination of the two, appear to be practical. Material developed in the study is being used in an inventory of Virginia interstate pavements.
| Author | : Nari K. Vaswani |
| Publisher | : |
| Total Pages | : 25 |
| Release | : 1978 |
| Genre | : Pavements |
| ISBN | : |
Data collected on 111 interstate highway projects in Virginia were analyzed by multi-regression analysis and the rating coefficient for each type of distress determined. By this means, the total pavement distress and, hence, the maintenance rating of each pavement was obtained. The types of distress that were found to influence the maintenance rating were longitudinal cracking, alligator cracking, rutting pushing, raveling, and patching. Then, a method for designing the required thickness of an overlay was developed based on taking the thickness equivalency of an asphaltic concrete overlay in Virginia as equal to 0.5 (the thickness equivalency of an asphaltic concrete for new construction is 1.0) and the overlay thickness as a function of the ratio of the traffic, in terms of 18-kip (8,160 kg) equivalents, carried by the pavement before the overlay to the traffic it would carry after the overlay, depending on the durability of the asphaltic mix. This design method does not require the use of a deflection measuring device.
| Author | : Nari K. Vaswani |
| Publisher | : |
| Total Pages | : 13 |
| Release | : 1977 |
| Genre | : |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 156 |
| Release | : 1986 |
| Genre | : Pavements |
| ISBN | : |
| Author | : Fred N. Finn |
| Publisher | : Transportation Research Board National Research |
| Total Pages | : 76 |
| Release | : 1984 |
| Genre | : Technology & Engineering |
| ISBN | : |
This synthesis will be of interest to pavement designers and others concerned with the design of asphalt concrete overlays. Information is presented on reasons for overlaying a pavement and on the vaious methods available for design of an asphalt overlay. A pavement overlay may be required because of inadequate ride quality, excessive pavement distress, reduced friction between tire and pavement, high user costs, or inadequate structural capacity for planned use. This report of the Transportation Research Boad discusses the current methods used for designing asphalt concrete overlays with emphasis on deflection-based and analytical procedures.
| Author | : |
| Publisher | : |
| Total Pages | : 188 |
| Release | : 1983 |
| Genre | : Bridges |
| ISBN | : |
| Author | : Zhong Wu |
| Publisher | : |
| Total Pages | : 74 |
| Release | : 2009 |
| Genre | : Pavements |
| ISBN | : |
The objective of this research was to develop an overlay design method/procedure that is used for a structural overlay thickness design of flexible pavement in Louisiana based upon (1) in-situ pavement conditions and (2) non destructive test (NDT) methods, specifically the falling weight deflectometer (FWD) and/or Dynaflect. Fifteen overlay rehabilitation projects were selected for this study. These projects were strategically located throughout Louisiana with different traffic levels. At each selected project, NDT deflection tests including the falling weight deflectometer (FWD) and Dynaflect were performed at a 0.1-mile interval. For some of the selected projects, detailed condition survey data including cracking, rut depth, International Roughness Index (IRI), mid-depth temperature, and pavement thickness was also collected. Six NDT-based overlay design methods were selected and used in the overlay thickness design analysis.
| Author | : James A. Crovetti |
| Publisher | : |
| Total Pages | : 76 |
| Release | : 2005 |
| Genre | : Pavements |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 1368 |
| Release | : 1983 |
| Genre | : Aeronautics |
| ISBN | : |
| Author | : R. J. Wedner |
| Publisher | : |
| Total Pages | : 126 |
| Release | : 1980 |
| Genre | : Pavements |
| ISBN | : |
Project monitored flexible pavement dynamic deflections, roughness, and distress over a six-year period. Results show present surface condition and serve as a basis for evaluating rehabilitation needs.
