TY - GEN
T1 - Evaluation of the design of bonded whitetoppings based on performance data at the mnroad research facility
AU - Mu, Feng
AU - Vandenbossche, Julie M.
AU - Barman, Manik
PY - 2011/12/1
Y1 - 2011/12/1
N2 - The objective of this study is to review the existing bonded whitetopping design procedures and evaluate their efficiency using field data in order to provide useful recommendations for the development of a new design procedure. In total, four design methods are reviewed and evaluated, namely the Colorado Department of Transportation (CDOT) method, New Jersey Department of Transportation (NJDOT) method, Portland Cement Association (PCA) method and Illinois Centre for Transportation (ICT) method. The performance data for the bonded whitetopping sections constructed at the MnROAD Research Facility was used to perform an extensive evaluation of each of these design procedures. These sections provide a broad range of overlay designs so that a comprehensive evaluation could be performed. The performance of the NJDOT, the ICT, the PCA and the CDOT methods were evaluated using field observations at MnROAD. None of the methods yields perfect predictions for the fatigue development of the MnROAD overlay designs. The PCA and the CDOT methods seem to be able to yield the most reasonable predictions of the fatigue In the overlay. This might be due to the fact that these procedures allow for consideration of partial bonding, although no model is currently available for characterizing debonding at the interface. Future work in this area is greatly needed since debonding is the primary factor contributing to the failure of the overlay. During the evaluation, it was also identified that the stiffness of the asphalt layer has a significant impact on the accumulation of damage within the overlay. It was concluded that the variation in the stiffness of the asphalt layer with changing temperatures has a significant impact on the life of the overlay and must be considered to accurately predict the performance.
AB - The objective of this study is to review the existing bonded whitetopping design procedures and evaluate their efficiency using field data in order to provide useful recommendations for the development of a new design procedure. In total, four design methods are reviewed and evaluated, namely the Colorado Department of Transportation (CDOT) method, New Jersey Department of Transportation (NJDOT) method, Portland Cement Association (PCA) method and Illinois Centre for Transportation (ICT) method. The performance data for the bonded whitetopping sections constructed at the MnROAD Research Facility was used to perform an extensive evaluation of each of these design procedures. These sections provide a broad range of overlay designs so that a comprehensive evaluation could be performed. The performance of the NJDOT, the ICT, the PCA and the CDOT methods were evaluated using field observations at MnROAD. None of the methods yields perfect predictions for the fatigue development of the MnROAD overlay designs. The PCA and the CDOT methods seem to be able to yield the most reasonable predictions of the fatigue In the overlay. This might be due to the fact that these procedures allow for consideration of partial bonding, although no model is currently available for characterizing debonding at the interface. Future work in this area is greatly needed since debonding is the primary factor contributing to the failure of the overlay. During the evaluation, it was also identified that the stiffness of the asphalt layer has a significant impact on the accumulation of damage within the overlay. It was concluded that the variation in the stiffness of the asphalt layer with changing temperatures has a significant impact on the life of the overlay and must be considered to accurately predict the performance.
KW - Evaluation of whitetopping design
KW - ICT
KW - Interface debonding
KW - MnROAD whitetopping data
KW - NJDOT
KW - PCA and CODT methods
KW - Temperature dependence of asphalt stiffness
UR - http://www.scopus.com/inward/record.url?scp=84855593202&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84855593202&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84855593202
SN - 9780984065882
T3 - International Conference on Concrete Pavement Design, Construction and Rehabilitation
SP - 62
EP - 70
BT - International Conference on Concrete Pavement Design, Construction and Rehabilitation
T2 - International Conference on Concrete Pavement Design, Construction and Rehabilitation 2011
Y2 - 19 April 2011 through 20 April 2011
ER -