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Variations In Backcalculated Pavement Layer Moduli In Ltpp Seasonal Monitoring Sites
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Book Synopsis Variations in Backcalculated Pavement Layer Moduli in LTPP Seasonal Monitoring Sites by : EO. Lukanen
Download or read book Variations in Backcalculated Pavement Layer Moduli in LTPP Seasonal Monitoring Sites written by EO. Lukanen and published by . This book was released on 2000 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seasonal variations in structural parameters were calculated from Falling Weight Deflectometer data on 25 LTPP flexible seasonal monitoring sections. In all, 23,976 deflection basins were analyzed. The deflection basins were collected monthly between the fall of 1993 and the spring of 1995. The test locations were distributed around North America from Saskatchewan to South Texas and from Idaho to Maine. The sections all consisted of asphalt surfacing and granular bases (and some granular subbases) over subgrades. Asphalt thicknesses ranged from 46 to 277\mm. Seasonal variations observed on selected sections in this database and documented in this paper include variations in asphaltic materials with temperature, variations in moduli of the unbound materials with precipitation, and variations in moduli of unbound materials due to freeze/thaw. For moderately thick to thick asphalt sections (>125 mm) the temperature dependency can clearly be seen in the deflection basins. As expected, this variation in deflections, and AC modulus is sinusoidal over the year. The amplitude of the sinusoidal variations were found to be heavily influenced by the thickness of the AC layer. Thicker AC sections exhibited higher sinusoidal variations. Base and subgrade values tended to be influenced by temperature but remained more consistent throughout the year except in cases where freezethaw effects were seen. During freeze conditions, the moduli of the unbound (base and subgrade) layers drastically increased.
Book Synopsis Seasonal Variations in Backcalculated Pavement Layer Moduli in Minnesota by : JM. Ovik
Download or read book Seasonal Variations in Backcalculated Pavement Layer Moduli in Minnesota written by JM. Ovik and published by . This book was released on 2000 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in flexible pavement design have prompted agencies to move toward the development and use of mechanistic-empirical (M-E) design procedures. The purpose of this paper is to analyze seasonal trends in flexible pavement layer moduli in order to calibrate a mechanistic-empirical design procedure specific to Minnesota. The relationships investigated were between climate factors, surface and subsurface conditions, and pavement material properties. The results presented focus on the base and subgrade layers and show that the layer moduli vary with the state of moisture in the pavement. The data used to develop this approach were collected from four flexible pavement Long Term Pavement Performance Seasonal Monitoring Program sites (LTPP SMP) and the Minnesota Road Research Project (Mn/ROAD). Temperature data are used in this study to characterize the severity of a winter and to approximate the onset of freezing and thawing cycles. Finally, seasonal trends in pavement layer moduli were quantified for use in an M-E design of flexible pavements.
Book Synopsis Nondestructive Testing of Pavements and Backcalculation of Moduli by : Shiraz D. Tayabji
Download or read book Nondestructive Testing of Pavements and Backcalculation of Moduli written by Shiraz D. Tayabji and published by ASTM International. This book was released on 2000 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt: As with the previous two symposia, the 32 papers from the June/July, 1999, Seattle symposium present advances in the nondestructive testing of pavements using conventional falling weight deflectometer techniques and other promising techniques such as ground penetrating radar, rolling weight deflecto
Book Synopsis Seasonal Variations in the Moduli of Unbound Pavement Layers by : Cheryl Allen Richter
Download or read book Seasonal Variations in the Moduli of Unbound Pavement Layers written by Cheryl Allen Richter and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Characterizing Seasonal Variations in Pavement Material Properties for Use in a Mechanistic-empirical Design Procedure by : Jill M. Ovik
Download or read book Characterizing Seasonal Variations in Pavement Material Properties for Use in a Mechanistic-empirical Design Procedure written by Jill M. Ovik and published by . This book was released on 2000 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seasonal Variations of in Situ Materials Properties in New York State by : David Paul Orr
Download or read book Seasonal Variations of in Situ Materials Properties in New York State written by David Paul Orr and published by . This book was released on 2005 with total page 946 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advances in Materials and Pavement Performance Prediction II by : K. Anupam
Download or read book Advances in Materials and Pavement Performance Prediction II written by K. Anupam and published by CRC Press. This book was released on 2020-12-08 with total page 501 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inspired from the legacy of the previous four 3DFEM conferences held in Delft and Athens as well as the successful 2018 AM3P conference held in Doha, the 2020 AM3P conference continues the pavement mechanics theme including pavement models, experimental methods to estimate model parameters, and their implementation in predicting pavement performance. The AM3P conference is organized by the Standing International Advisory Committee (SIAC), at the time of this publication chaired by Professors Tom Scarpas, Eyad Masad, and Amit Bhasin. Advances in Materials and Pavement Performance Prediction II includes over 111 papers presented at the 2020 AM3P Conference. The technical topics covered include: - rigid pavements - pavement geotechnics - statistical and data tools in pavement engineering - pavement structures - asphalt mixtures - asphalt binders The book will be invaluable to academics and engineers involved or interested in pavement engineering, pavement models, experimental methods to estimate model parameters, and their implementation in predicting pavement performance.
Book Synopsis Temperature Predictions and Adjustment Factors for Asphalt Pavement by : Erland O. Lukanen
Download or read book Temperature Predictions and Adjustment Factors for Asphalt Pavement written by Erland O. Lukanen and published by . This book was released on 2000 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the results of an analysis of the response that deflections and backcalculated asphalt moduli have to the pavement temperature. The study used deflection and temperature data from 40 sites monitored in the Seasonal Monitoring Program of the Long Term Pavement Performance (LTPP) program. The report presents improved methods of estimating the temperature within an asphalt pavement based on the measurement procedures used for the LTPP program. The data necessary to estimate the temperature within the asphalt included the surface temperature, time of day, depth below the surface, and the average air temperature from the previous day.
Book Synopsis Seasonal Variation in Material Properties of a Flexible Pavement by :
Download or read book Seasonal Variation in Material Properties of a Flexible Pavement written by and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Seasonal variation of temperature and moisture cause considerable changes in the load-carrying capacity of pavements in geographical areas subject to extreme freeze/thaw conditions. Pavement engineers in these areas must be able to quantify the variation in the load-carrying capacity of a pavement in order to design it adequately. The Seasonal Monitoring Program (SMP) of the Long Term Pavement Performance (LTPP) study of the U.S.A. Federal Highway Administration (FHWA) is monitoring seasonal variations in Falling Weight Deflectometer (FWD) deflections, air temperature, rainfall, soil temperature, moisture content, and soil electrical resistance at numerous sites across North America. The present study relates changes in pavement load carrying capacity represented by the pavement layer resilient moduli to selected environmental factors on the SMP site near Oak Lake, Manitoba. The most significant environmental parameters causing seasonal variation in pavement layer resilient moduli are identified as surface temperature (asphalt layer) and Thawing Index (base and subgrade layers). The examination of the material properties of this single pavement site during any time of the year is an important first step towards the adoption of mechanistic pavement design and rehabilitation procedures at the Manitoba Department of Highways and Transportation. For the covering abstract of this conference see IRRD number 872978.
Book Synopsis Back-calculation of Layer Parameters for LTPP Test Sections by : Harold L. Von Quintus
Download or read book Back-calculation of Layer Parameters for LTPP Test Sections written by Harold L. Von Quintus and published by DIANE Publishing. This book was released on 2002 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Backcalculation of layer parameters for LTPP test sections by :
Download or read book Backcalculation of layer parameters for LTPP test sections written by and published by DIANE Publishing. This book was released on with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Backcalculation of Layer Moduli of LTPP General Pavement Study (GPS) Sites by :
Download or read book Backcalculation of Layer Moduli of LTPP General Pavement Study (GPS) Sites written by and published by . This book was released on 1997 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Material Characterization and Seasonal Variation in Material Properties by :
Download or read book Material Characterization and Seasonal Variation in Material Properties written by and published by . This book was released on 2006 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Backcalculation of Layer Moduli of LTPP General Pavement Study (GPS) Sites by : Brian Killingsworth
Download or read book Backcalculation of Layer Moduli of LTPP General Pavement Study (GPS) Sites written by Brian Killingsworth and published by . This book was released on 1997 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report details the activities and process by which the re-backcalculation of Long Term Pavement Performance (LTPP) General Pavement Study (GPS) test sections were completed. It details how the backcalculation program was selected, lists the GPS sections re-backcalculated, presents the results of the revised backcalculations and discusses the problem sections that were encountered. The report is also accompanied by a data base that contains results from the original Strategic Highway Research Program (SHRP) backcalculation process and those sections that were re-backcalculated.
Download or read book Transportation Research Record written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seasonal Variation of Flexible Pavement Backcalculated Moduli by : Gary J. Wang
Download or read book Seasonal Variation of Flexible Pavement Backcalculated Moduli written by Gary J. Wang and published by . This book was released on 1995 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seasonal Variations of Pavement Layer Moduli Determined Using in Situ Measurements of Pavement Stress and Strain by : Lauren J. Swett
Download or read book Seasonal Variations of Pavement Layer Moduli Determined Using in Situ Measurements of Pavement Stress and Strain written by Lauren J. Swett and published by . This book was released on 2007 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt:
