Investigation on seasonal variation of thermal-induced strain in flexible pavements based on field and laboratory measurements
| Autor: | Leila Hashemian, Simita Biswas, Alireza Bayat |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
lcsh:TE1-450
Seasonal variation 0211 other engineering and technologies Thermal strain 02 engineering and technology Generation rate Laboratory testing 021105 building & construction 0502 economics and business Thermal medicine Geotechnical engineering lcsh:Highway engineering. Roads and pavements Civil and Structural Engineering 050210 logistics & transportation 05 social sciences Seasonality medicine.disease Asphalt strain gauge Field observation Asphalt Mechanics of Materials Slab Environmental science Thermal-induced strain Flexible pavement |
| Zdroj: | International Journal of Pavement Research and Technology, Vol 9, Iss 5, Pp 354-362 (2016) |
| ISSN: | 1996-6814 |
| DOI: | 10.1016/j.ijprt.2016.08.008 |
| Popis: | Pavement temperature variation has a large influence on the structural response of flexible pavements. Daily and seasonal temperature fluctuation causes expansion and contraction of pavement material, which then leads to the generation of thermal strain. In this study, field observation and laboratory tests were conducted to investigate seasonal variation of thermal-induced strain in flexible pavement. Field observations were conducted at the Integrated Road Research Facility (IRRF)’s test road in Edmonton, Alberta, Canada, which is fully equipped with structural and environmental monitoring instruments. The main objective of the field study was to compare the variation of thermal-induced strain in warm and cold seasons. Field results indicated that thermal-induced strain is 1.4–2.0 times greater in cold seasons than in warm seasons following the same pavement temperature variations; however, strain generation rate was greater in warm seasons. Laboratory testing of asphalt slab and cylindrical samples produced comparable ratios. Moreover, field observation and laboratory testing showed a similar trend of temperature and thermal strain variations. Keywords: Thermal-induced strain, Asphalt strain gauge, Field observation, Flexible pavement, Laboratory testing, Seasonal variation |
| Databáze: | OpenAIRE |
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