Investigation of thermal-induced strains in flexible pavements based on field data
| Autor: | Simita Biswas, Mohammad Hossein Shafiee, Negar Tavaf Zadeh, Leila Hashemian, Alireza Bayat |
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| Rok vydání: | 2017 |
| Předmět: |
Field data
0211 other engineering and technologies 020101 civil engineering 02 engineering and technology Thermal contraction 0201 civil engineering Ambient air Transverse plane Asphalt pavement 021105 building & construction Thermal Forensic engineering Environmental science Geotechnical engineering Anisotropy General Environmental Science Civil and Structural Engineering |
| Zdroj: | Canadian Journal of Civil Engineering. 44:244-252 |
| ISSN: | 1208-6029 0315-1468 |
| DOI: | 10.1139/cjce-2016-0458 |
| Popis: | Thermal-induced strains caused by daily temperature fluctuations are considered to be a direct impact of environmental factors on flexible pavements. This paper investigates thermal-induced strains in the longitudinal, transverse, and vertical directions at the bottom of hot mix asphalt (HMA) during a 16 month monitoring period. This study was conducted at the Integrated Road Research Facility (IRRF), which is a fully instrumented test road in Edmonton, Alberta, Canada. Noticeable variations for horizontal and vertical strains were observed as a function of ambient air temperature change. Results showed that the highest strains occurred in winter and spring, while the most pronounced strain fluctuations were captured during the spring-thaw period. Using the obtained data, coefficients of thermal contraction and expansion were determined during different seasons. It was found that thermal coefficients are different in three directions, illustrating the anisotropic properties of HMA. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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