Asphalt Overlay and Subsurface Drainage of Broken and Seated Concrete Pavement
Publication: Journal of Transportation Engineering
Volume 131, Issue 8
Abstract
This research was conducted to study subsurface drainage issues surrounding an asphalt overlay. The type of pavement that was examined in this study was a Superpave overlay on top of a Broken and Seated Jointed Reinforced Concrete Pavement (B&S JRCP). A finite-element model of the pavement was developed and a number of numerical analyses were performed to evaluate the movement of water in the pavement. The pavement drainage modeling was conducted using the SEEP/W 2002 in GEO-SLOPE program. A steady-state saturated flow analysis was used to obtain the flow path of the infiltrated water and flux quantity through the cross-sectional area in the pavement. This analysis was done for the pavement models with different layer arrangements and different drainage practices. The findings of this research revealed that high water permeability in the asphalt base and Superpave surface layers contributed to water flow into the pavement. This infiltration of water into the pavement structure is a serious issue that must be addressed in pavement drainage design. The broken and seated layer functions as an efficient drainage layer.
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References
Cedergren, H. R. (1974). Drainage of highway and airfield pavements, Wiley, New York.
Huang, Y. H. (1993). Pavement analysis and design, Prentice-Hall, Englewood Cliffs, N.J.
Johnson, F. L., and Chang, F. M. (1984). Drainage of highway pavement, Federal Highway Administration, Washington, D.C.
SEEP/W user’s guide. (1998). Version 5, Geo-Slope International Ltd., Calgary, Alta., Canada.
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© 2005 ASCE.
History
Received: Jul 20, 2004
Accepted: Oct 11, 2004
Published online: Aug 1, 2005
Published in print: Aug 2005
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