A mechanistic analysis for flexible pavement under heavy truck loads | |
| Author | Chavalit Lerdhirunwong |
| Call Number | AIT RSPR no. TE-01-03 |
| Subject(s) | Pavements, Flexible Mechanics, Analytic |
| Note | A research study submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Civil Engineering |
| Publisher | Asian Institute of Technology |
| Series Statement | Research studies project report ; no. TE-01-03 |
| Abstract | In the empirical approach of the flexible pavement design, the design charts are used to identify the structural thickness. The design charts are constructed based on the collected data from road tests. The mechanistic approach is another approach that determines the stress, strain, and deflection occurred in pavement structure when loads are applied. The material properties play an important role in the mechanistic method. This research applies a mechanistic approach for analyzing the structural capacity of the existing pavement. Three routes, which were originally designed by using empirical method, are selected as case studies. These routes are located in the heavy truck loading area. Fatigue cracking and permanent deformation are failure types that are obtained from the horizontal tensile strain at the bottom of asphalt layer and the compressive strain at the top of subgrade layer. In this study, the selected routes are redesigned by using the same design standard and design parameters, but the asphalt surface thickness of the selected routes is designed based on the actual traffic composition. The comparison of allowable and calculated strain is used to plan and schedule the rehabilitation strategy using asphalt overlay technique. The thickness of asphalt overlay is scheduled in order to prevent the critical failures and prolong the life of the selected routes. |
| Year | 2002 |
| Corresponding Series Added Entry | Asian Institute of Technology. Research studies project report ; no. TE-01-03 |
| Type | Research Study Project Report (RSPR) |
| School | School of Civil Engineering |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Transportation Engineering (TE) |
| Chairperson(s) | Pannapa Herabat; |
| Examination Committee(s) | Yordphol Tanaboriboon;Park, Dongjoo; |
| Degree | Special Studies Project Report (M.Eng.) - Asian Institute of Technology, 2002 |