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Abstract
Asphalt pavements form an integral part of any transportation system. The structural capacity of the hot mix asphalt concrete layers depends on many factors including its temperature. Moreover, temperature can be a major contributor to several types of distresses. Therefore, temperature is a significant factor that affects the performance and life span of a pavement. The Sultanate of Oman's road network expanded at a phenomenal pace from approximately 10 km of paved roads in 1970 to 9,673 km in 2001. with the recent SHRP and LTTP research findings, it was necessary to investigate the applicability of the models developed from these research studies to Oman's environmental conditions and more generally to the Arabian Gulf climate. This paper presents the research undertaken to develop models to predict high and low asphalt pavement temperatures in Oman. A pavement monitoring station was set-up at the Sultan Qaboos University (SQU) campus to monitor air, pavement temperatures and solar radiation. Data were collected for 445 days. Daily minimum and maximum temperatures were recorded. A regression analysis was used to develop the low pavement temperature model. A stepwise regression was used to develop high temperature models using air temperature, solar radiation, and duration of solar radiation as independent variables. The developed models were compared with the SHRP and LTPP models. The SHRP and LTPP models were found to be more conservative than the developed models, which are more suitable for predicting pavement temperatures in Oman, and more generally in the Gulf region.
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References
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- Annual Meeting, Washington DC.
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- Hermansson, A., 2001, "Mathematical Model for Calculation of Pavement Temperatures: Comparisons of Calculated and Measured Temperatures," Transportation Research Record 1764, TRB, National Research Council, Washington, DC, pp. 180-188.
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- Mohseni, A. and Symons, M., 1998a, "Effect of Improved LTPP AC Pavement Temperature Models on Superpave Performance Grades," Presented at Transportation Research Board 77th Annual Meeting, Washington, D.C.
- Mohseni, A. and Symons, M., 1998b, "Improved AC Pavement Temperature Models from LTPP Seasonal Data," Presented at Transportation Research Board 77th Annual Meeting, Washington, D.C.
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- Shao, L., Park, S.W. and Kim, Y.R., 1997, "A Simplified Procedure for Prediction of Asphalt Pavement Subsurface Temperatures Based on Heat Transfer Theories," Transportation Research Record 1568, TRB,
- National Research Council, Washington, DC, pp. 114- 123.
- Solaimanian, M. and Kennedy, T.W., 1993, "Predicting Maximum Pavement Surface Temperature Using Maximum Air Temperature and Hourly Solar Radiation", Transportation Research Record 1417, TRB, National Research Council, Washington, DC, pp. 1-11.
References
Al-Abdul Wahhab, H.I. and Balghunaim, F.A., 1994,"Asphalt Pavement Temperature Related to Arid Saudi Environment," J. of Materials in Civil Engineering, American Society of Civil Engineers , 6 (1), pp. 1-14.
Al-Abdul Wahhab, H.I., Asi, I.M., Al-Dubabe, A. and Ali, M.F., 1997, "Development of Performance Based Bitumen Specifications for the Gulf Countries," Construction and Building Materials, 11(1), pp. 15 22.
Bosscher, P. J., Bahia, H. U., Thomas, S. and Russell, J. S., 1998, "The Relation Between Pavement Temperature and Weather Data: A Wisconsin Field Study to Verify the Superpave Algorithm," Transportation Research Record 1609, TRB, National Research Council, Washington, DC, pp. 1-11.
Diefenderfer, B.K., Al-Qadi, I.L., Reubush, S.D. and Freeman, T.E., 2002, "Development and Validation of A Model to Predict Pavement Temperature Profile," Presented at Transportation Research Board 82nd
Annual Meeting, Washington DC.
Hermansson, A., 2000, "Mathematical Model for Calculation of Pavement Temperatures: Comparisons of Calculated and Measured Temperatures," Transportation Research Record 1699, TRB, National Research Council, Washington, DC, pp. 134-141.
Hermansson, A., 2001, "Mathematical Model for Calculation of Pavement Temperatures: Comparisons of Calculated and Measured Temperatures," Transportation Research Record 1764, TRB, National Research Council, Washington, DC, pp. 180-188.
Lukanen, E. O., Han, C. and Skok, E. L. Jr., 1998, "Probabilistic Method of Asphalt Binder Selection Based on Pavement Temperature," Transportation Research Record 1609, TRB, National Research Council, Washington, DC, pp. 12-20.
Marshall, C., Meier, R.W. and Welsh, M., 2001, "Seasonal Temperature Effects on Flexible Pavements in Tennessee," Presented at Transportation Research Board 80th Annual Meeting, Washington, DC.
MINITAB Statistical Software Release 13, 2000, User's Guide, Minitab Inc.
Mohseni, A., 1998, "LTPP Seasonal Asphalt Concrete (AC) Pavement Temperature Models," Report FHWA-RD-97-103, Federal Highway Administration, U.S. Department of Transportation, p. 71.
Mohseni, A. and Symons, M., 1998a, "Effect of Improved LTPP AC Pavement Temperature Models on Superpave Performance Grades," Presented at Transportation Research Board 77th Annual Meeting, Washington, D.C.
Mohseni, A. and Symons, M., 1998b, "Improved AC Pavement Temperature Models from LTPP Seasonal Data," Presented at Transportation Research Board 77th Annual Meeting, Washington, D.C.
Neter, J., Wasserman, W. and Kunter, M.H., 1990, "Applied Linear Statistical Models," Third Edition, Richard D. Irwin, Inc., Boston, p. 1181.
Shao, L., Park, S.W. and Kim, Y.R., 1997, "A Simplified Procedure for Prediction of Asphalt Pavement Subsurface Temperatures Based on Heat Transfer Theories," Transportation Research Record 1568, TRB,
National Research Council, Washington, DC, pp. 114- 123.
Solaimanian, M. and Kennedy, T.W., 1993, "Predicting Maximum Pavement Surface Temperature Using Maximum Air Temperature and Hourly Solar Radiation", Transportation Research Record 1417, TRB, National Research Council, Washington, DC, pp. 1-11.