Survival Analysis of Fatigue and Rutting Failures in Asphalt Pavements
Fatigue and rutting are two primary failure mechanisms in asphalt pavements. The evaluations of fatigue and rutting performances are significantly uncertain due to large uncertainties involved with the traffic and pavement life parameters. Therefore, deterministically it is inadequate to predict whe...
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Journal of Engineering |
| Online Access: | http://dx.doi.org/10.1155/2016/8359103 |
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| author | Pabitra Rajbongshi Sonika Thongram |
| author_facet | Pabitra Rajbongshi Sonika Thongram |
| author_sort | Pabitra Rajbongshi |
| collection | DOAJ |
| description | Fatigue and rutting are two primary failure mechanisms in asphalt pavements. The evaluations of fatigue and rutting performances are significantly uncertain due to large uncertainties involved with the traffic and pavement life parameters. Therefore, deterministically it is inadequate to predict when an in-service pavement would fail. Thus, the deterministic failure time which is known as design life (yr) of pavement becomes random in nature. Reliability analysis of such time (t) dependent random variable is the survival analysis of the structure. This paper presents the survival analysis of fatigue and rutting failures in asphalt pavement structures. It is observed that the survival of pavements with time can be obtained using the bathtub concept that contains a constant failure rate period and an increasing failure rate period. The survival function (S(t)), probability density function (pdf), and probability distribution function (PDF) of failure time parameter are derived using bathtub analysis. It is seen that the distribution of failure time follows three parametric Weibull distributions. This paper also works out to find the most reliable life (YrR) of pavement sections corresponding to any reliability level of survivability. |
| format | Article |
| id | doaj-art-5efa655b1ce148aaa7800e453e147b82 |
| institution | Kabale University |
| issn | 2314-4904 2314-4912 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
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| series | Journal of Engineering |
| spelling | doaj-art-5efa655b1ce148aaa7800e453e147b822025-02-03T05:53:49ZengWileyJournal of Engineering2314-49042314-49122016-01-01201610.1155/2016/83591038359103Survival Analysis of Fatigue and Rutting Failures in Asphalt PavementsPabitra Rajbongshi0Sonika Thongram1Civil Engineering Department, National Institute of Technology, Silchar, Silchar, Assam 788010, IndiaCivil Engineering Department, National Institute of Technology, Silchar, Silchar, Assam 788010, IndiaFatigue and rutting are two primary failure mechanisms in asphalt pavements. The evaluations of fatigue and rutting performances are significantly uncertain due to large uncertainties involved with the traffic and pavement life parameters. Therefore, deterministically it is inadequate to predict when an in-service pavement would fail. Thus, the deterministic failure time which is known as design life (yr) of pavement becomes random in nature. Reliability analysis of such time (t) dependent random variable is the survival analysis of the structure. This paper presents the survival analysis of fatigue and rutting failures in asphalt pavement structures. It is observed that the survival of pavements with time can be obtained using the bathtub concept that contains a constant failure rate period and an increasing failure rate period. The survival function (S(t)), probability density function (pdf), and probability distribution function (PDF) of failure time parameter are derived using bathtub analysis. It is seen that the distribution of failure time follows three parametric Weibull distributions. This paper also works out to find the most reliable life (YrR) of pavement sections corresponding to any reliability level of survivability.http://dx.doi.org/10.1155/2016/8359103 |
| spellingShingle | Pabitra Rajbongshi Sonika Thongram Survival Analysis of Fatigue and Rutting Failures in Asphalt Pavements Journal of Engineering |
| title | Survival Analysis of Fatigue and Rutting Failures in Asphalt Pavements |
| title_full | Survival Analysis of Fatigue and Rutting Failures in Asphalt Pavements |
| title_fullStr | Survival Analysis of Fatigue and Rutting Failures in Asphalt Pavements |
| title_full_unstemmed | Survival Analysis of Fatigue and Rutting Failures in Asphalt Pavements |
| title_short | Survival Analysis of Fatigue and Rutting Failures in Asphalt Pavements |
| title_sort | survival analysis of fatigue and rutting failures in asphalt pavements |
| url | http://dx.doi.org/10.1155/2016/8359103 |
| work_keys_str_mv | AT pabitrarajbongshi survivalanalysisoffatigueandruttingfailuresinasphaltpavements AT sonikathongram survivalanalysisoffatigueandruttingfailuresinasphaltpavements |