Numerical modeling of rubber asphalt pavement | |
| Author | Wichain Sommanawat |
| Call Number | AIT Thesis no.ST-02-1 |
| Subject(s) | Numerical analysis Asphalt-rubber |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering. |
| Publisher | Asian Institute of Technology |
| Abstract | Extending previous study at AIT in the investigation of physical properties of rubber asphalt, the present study attempts to conduct numerical investigation on the performance of rubber asphalt. The studies simulate 2D and 3D finite element models of flexible pavement using SAP2000 program. The results from the present finite element model are compared with results obtained by the elastic-viscoelastic multilayer program called KENLA YER. The comparisons between these two programs have shown that the results from SAP2000 compare well with KENLA YER in the case of elastic and viscoelastic. According to the comparison between the conventional asphalt and the rnbber asphalt, the 20% concentration of rubber powder is found to be the best mixture that can decrease the compressive strain on top of subgrade and the tensile strain at the bottom of asphalt layer. These two strains are the causes of the rutting depth and the fatigue cracking, respectively. Also, sensitivity analysis of the present model is carried out to examine the effects of individual parameters in the pavement responses. The 428 cases of flexible pavement designs were analyzed by SAP2000 program and the results are used to develop the design algorithm by SPSS program. The proposed algorithm performs very well in comparison with the results obtained by SAP2000 and the Asphalt Institute (AI) method. |
| Year | 2003 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Structural Engineering (STE) /Former Name = Structural Engineering and Construction (ST) |
| Chairperson(s) | Worsak Kanok-Nukulchai; |
| Examination Committee(s) | Tawatchai Tingsanchali;William Barry;Sak Kongsuwan; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2002 |