Effects of Seasonal Changes on Ride Quality at MnROAD
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Effects of Seasonal Changes on Ride Quality at MnROAD
Published Date
2008-07
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Minnesota Department of Transportation
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Report
Abstract
This project studied frost heave as it relates to different pavement design parameters and ride quality deterioration.
Elevations of frost pins embedded in MnROAD test sections were measured over four years. Pin elevation changes
were analyzed to show the amount of frost heave and degree of frost heave uniformity within a cell. Various plots
were made to show the elevation change and interquartile range of the pins over time. Statistical approaches such
as visual analyses, Student-t hypothesis testing, and ANOVA analysis were used in this study to evaluate the effect
of pavement design features on frost heave and roughness.
Subgrade and base type, pavement thickness, and drainage capabilities are the major design factors that affect frost
heave. The effects of frost heave on ride quality deterioration for flexible and rigid pavements could not be
confirmed or statistically rejected in this study. No seasonal adjustment factor for IRI measurement is
recommended for use in a pavement management system because no firm conclusions could be made from the data
concerning a seasonal effect on IRI measurements.
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Minnesota Department of Transportation
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Khazanovich, Lev; Bly, Peter; Shamin, Atika; Barnes, Randal J.. (2008). Effects of Seasonal Changes on Ride Quality at MnROAD. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/151434.
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