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The paper presents the results of calculations and laboratory determination of thermal stresses at low temperatures. The modified Hills and Brien's method was used to calculate the thermal stresses in asphalt layers of pavements and the results were compared against the values obtained at a laboratory with the Thermal Stress Restrained Specimen Test (TSRST) method. The laboratory investigations were conducted using plain grade bitumen, modified bitumen with SBS elastomer modification and multigrade type bitumen. It was found that the type of bitumen binder in asphalt concrete is of significant importance to the value of the calculated thermal stresses. For the cooling rate of 10ºC/h the lowest value was obtained for asphalt concrete produced with the use of multigrade type bitumen. This fact can be an indication of a better resistance to low temperature cracking. The thermal stresses were had the highest values for asphalt concrete produced with plain bitumen. A good correlation was obtained between the thermal stresses calculated with the Hills and Brien's procedure and the values of thermal stresses determined with the TSRST method.
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- Kategoria:
- Aktywność konferencyjna
- Typ:
- publikacja w wydawnictwie zbiorowym recenzowanym (także w materiałach konferencyjnych)
- Tytuł wydania:
- 7th International RILEM International Conference on Cracking in Pavements : Mechanisms, Modeling, Testing, Detection, Prevention and Case Histories strony 0 - 0
- Język:
- angielski
- Rok wydania:
- 2012
- Opis bibliograficzny:
- Pszczoła M., Judycki J.: Evaluation of Thermal Stresses in Asphalt Layers in Comparison with TSRST Test Results// 7th International RILEM International Conference on Cracking in Pavements : Mechanisms, Modeling, Testing, Detection, Prevention and Case Histories/ ed. eds. A. Scarpas, N. Kringos, I. Al-Quadi, A. Loizos Holandia: Springer, 2012, s.0-0
- Weryfikacja:
- Politechnika Gdańska
wyświetlono 121 razy