04083nas a2200457 a 4500 20260818085929.0 240118s2022 th u m tt 000 a eng d .b12417270 AIT Thesis no.TE-21-06 Thinn Thinn Deflection-based approach for mechanistic design of flexible pavement Pathum Thani, Thailand : Asian Institute of Technology, 2022 529 leaves : ill. Thesis; no. TE-21-06 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Transportation Engineering Thesis (M.Eng.) - Asian Institute of Technology, 2022 In Thailand, the Department of Highways (DOH) adopted both empirical and mechanistic methods for the pavement analysis and design. Recently, the deflection based design approach has been comprehensively reviewed by the DOH for the possible adoption of local design standard and practice. One of the main reasons was that Thailand road authorities e.g., DOH and the Department of Rural Roads (DRR), consider the falling weight deflectometer (FWD) for the new construction and rehabilitation of road pavement. In addition, such the FWD has been globally accepted as the non-destructive test for deflection measurement and structural capacity evaluation. Ultimately, the implication of FWD deflections for localized pavement analysis and design shall be developed and proposed to Thailand road authorities. Due to the aforementioned reason, this study presented the deflection-based mechanistic pavement design of flexible pavement. The FWD was selected as the main loading application, and the standard Thai truck was selected to represent the design traffic loads for reference and comparison with the FWD in this study. A typical loading stress of 800 kPa was practically adopted by the DOH according to the FWD testing protocol, whereas the standard 10-wheel 25-ton truck having a tandem axle-dual wheel configuration with a tire pressure of 690 kPa (100 psi) was adopted for Thailand pavement design and analysis. KENLAYER computer program based on multi-layered elastic system was used to predict pavement responses, e.g., surface deflections, horizontal tensile strains, and vertical compressive strains. In multi-layered elastic analysis, the pavement layers were assumed to be homogeneous, isotropic, and linearly/nonlinearly elastic. The analysis results indicated that the flexible pavement design using a deflection-based approach was simple and conservative. Pavements Design Computer programs Pavements, Flexible Design Kunnawee Kanitpong, Chairperson Auckpath Sawangsuriya, Examination Committee Santoso, Djoen San, Examination Committee His Majesty the King{u2019}s Scholarships, Scholarship Donor Asian Institute of Technology. Thesis; no. TE-21-06 Full-Text http://203.159.5.9/ait-thesis/Viewer/viewer.php?id=B20353 .b12417270 mnait a 240401 0 240229 m a a 0 mnarc mnarc mnait mnait 40 61 20 Barcode : 30050121038540 CREATED : 2024-01-18 RECORD # : i13478199 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : - CREATED : 2024-01-18 RECORD # : i13478205 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050121065907 CREATED : 2024-02-23 RECORD # : i13486743 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050121065915 CREATED : 2024-02-23 RECORD # : i13486755 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 26271 26271 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.TE-21-06 30050121038540 2026-08-18 08:59:29 1 2026-08-18 40 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.TE-21-06 2026-08-18 08:59:29 2026-08-18 61 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.TE-21-06 30050121065907 2026-08-18 08:59:29 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.TE-21-06 30050121065915 2026-08-18 08:59:29 2 2026-08-18 20