A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Sensitivity of Input Variables for Rigid Pavement Rehabilitation Strategies in the MEPDG
The Mechanistic-Empirical Pavement Design Guide (MEPDG) can be used to design new and rehabilitated rigid pavements. The design of new pavements has been investigated extensively and reported in several research reports and publications. However, the rigid pavement rehabilitation options within the MEPDG have not been studied to the same extent. Several rehabilitation options are available for rigid pavements in the MEPDG: (a) JPCP over JPCP (unbonded), (b) JPCP over HMA (white-topping), (c) CRCP over JPCP (unbonded), and (d) CRCP over HMA (white-topping). To evaluate the impact of various design inputs on the predicted performance for the four rehabilitation options, preliminary one variable at a time (OAT) and detailed sensitivity analyses were performed. While the preliminary OAT sensitivity analysis investigated the input variables specific to the existing pavement layers, it also determined the variable effects on the overall pavement performance. The inputs related to the new pavement layer were held constant in OAT analysis because several studies have addressed their sensitivity. The OAT results identified the significant input variables of the existing pavement layers. Subsequently, based on the results of OAT sensitivity analysis, a detailed sensitivity analysis was performed. The detailed sensitivity analyses included the significant variables identified in OAT analyses in addition to the sensitive inputs previously identified for new pavement layers. Full factorials were designed to determine statistical significant main and two-way interaction effects. This paper highlights the process of identifying the most sensitive input variables for rehabilitation design options. In addition, the most important variables that affected the predicted performance for rigid rehabilitation designs in the MEPDG were identified.
Sensitivity of Input Variables for Rigid Pavement Rehabilitation Strategies in the MEPDG
The Mechanistic-Empirical Pavement Design Guide (MEPDG) can be used to design new and rehabilitated rigid pavements. The design of new pavements has been investigated extensively and reported in several research reports and publications. However, the rigid pavement rehabilitation options within the MEPDG have not been studied to the same extent. Several rehabilitation options are available for rigid pavements in the MEPDG: (a) JPCP over JPCP (unbonded), (b) JPCP over HMA (white-topping), (c) CRCP over JPCP (unbonded), and (d) CRCP over HMA (white-topping). To evaluate the impact of various design inputs on the predicted performance for the four rehabilitation options, preliminary one variable at a time (OAT) and detailed sensitivity analyses were performed. While the preliminary OAT sensitivity analysis investigated the input variables specific to the existing pavement layers, it also determined the variable effects on the overall pavement performance. The inputs related to the new pavement layer were held constant in OAT analysis because several studies have addressed their sensitivity. The OAT results identified the significant input variables of the existing pavement layers. Subsequently, based on the results of OAT sensitivity analysis, a detailed sensitivity analysis was performed. The detailed sensitivity analyses included the significant variables identified in OAT analyses in addition to the sensitive inputs previously identified for new pavement layers. Full factorials were designed to determine statistical significant main and two-way interaction effects. This paper highlights the process of identifying the most sensitive input variables for rehabilitation design options. In addition, the most important variables that affected the predicted performance for rigid rehabilitation designs in the MEPDG were identified.
Sensitivity of Input Variables for Rigid Pavement Rehabilitation Strategies in the MEPDG
Brink, Wouter C. (author) / Harsini, Iman (author) / Haider, Syed W. (author) / Buch, Neeraj (author) / Chatti, Karim (author) / Baladi, Gilbert Y. (author) / Kutay, Emin (author)
2013 Airfield & Highway Pavement Conference ; 2013 ; Los Angeles, California, United States
Airfield and Highway Pavement 2013 ; 528-538
2013-06-18
Conference paper
Electronic Resource
English
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