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Evaluation of thermal cracking probability for asphalt concretes with high percentage of RAP
Highlights Probability of thermal cracking was calculated using strength and thermal stresses. Probability of thermal cracking depends on quality and amount of RAP and AC type. 20% of RAP in wearing course increases the thermal cracking temperature by 5–6 °C. Addition of rejuvenator strongly mitigates the negative effect of the added RAP.
Abstract The paper presents determination of the probability of thermal cracking of asphalt mixtures with different reclaimed asphalt pavement (RAP) content on the basis of laboratory tests and analytical evaluation using thermal stress development method. Probability was evaluated taking into consideration: the type and gradation of the mixture and the quality and content of RAP. Thermal stresses were determined using two models: elastic and viscoelastic. Addition of RAP decreases the low-temperature properties of all the tested asphalt mixtures. In the case of wearing and binder courses, addition of 20% of RAP increases the cracking temperature by around 5–6 °C.
Evaluation of thermal cracking probability for asphalt concretes with high percentage of RAP
Highlights Probability of thermal cracking was calculated using strength and thermal stresses. Probability of thermal cracking depends on quality and amount of RAP and AC type. 20% of RAP in wearing course increases the thermal cracking temperature by 5–6 °C. Addition of rejuvenator strongly mitigates the negative effect of the added RAP.
Abstract The paper presents determination of the probability of thermal cracking of asphalt mixtures with different reclaimed asphalt pavement (RAP) content on the basis of laboratory tests and analytical evaluation using thermal stress development method. Probability was evaluated taking into consideration: the type and gradation of the mixture and the quality and content of RAP. Thermal stresses were determined using two models: elastic and viscoelastic. Addition of RAP decreases the low-temperature properties of all the tested asphalt mixtures. In the case of wearing and binder courses, addition of 20% of RAP increases the cracking temperature by around 5–6 °C.
Evaluation of thermal cracking probability for asphalt concretes with high percentage of RAP
Jaczewski, Mariusz (author) / Pszczola, Marek (author) / Alenowicz, Jacek (author) / Rys, Dawid (author) / Dolzycki, Bohdan (author) / Jaskula, Piotr (author)
2023-07-31
Article (Journal)
Electronic Resource
English
Springer Verlag | 2020
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