Seasonal variations in backcalculated pavement layer moduli in Minnesota Academic Article

abstract

• 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.

authors

• Birgisson, Bjorn

published proceedings

• NONDESTRUCTIVE TESTING OF PAVEMENTS AND BACKCALCULATION OF MODULI, 3RD VOLUME

author list (cited authors)

• Ovik, J. M., Birgisson, B., & Newcomb, D. E.

citation count

• 2

complete list of authors

• Ovik, JM||Birgisson, B||Newcomb, DE

publication date

• January 2000

publisher

• ASTM International  Publisher

published in

• n1040-1695ISSN  Journal

keywords

• Environmental Effects
• Material Properties
• Mechanistic-empirical Design
• Seasonal Changes

Digital Object Identifier (DOI)

• 10.1520/STP14764S

start page

• 129

end page

• 143

volume

• 1375

issue

• 1375

URL

• http://dx.doi.org/10.1520/stp14764s