The research focuses on the question of the influence of age on the interlayer bonding properties of two layered specimens. The evaluation compares and discusses the behavior of different datasets from laboratory and in situ pavements from Switzerland, United Kingdom and Italy using traditional data evaluation and Artificial Neural Network (ANN) analysis. The results show that it is possible to use ANN techniques to derive models from datasets and to predict interlayer bond strength. The findings demonstrate that age has a positive effect on the interlayer bond of asphalt pavements and that long term oven ageing can lead to similar results as in situ ageing. In addition it was found that the positive effect of ageing is greater when a tack coat is used. According to the results of the investigation a linear model from all data would predict that maximum strength may roughly increase by 1% per month over a period of 10 years.

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Keywords Ageing, Artificial neural network, Asphalt pavements, Bond test devices, Tack coat
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Series RILEM Bookseries
Raab, C. (Christiane), Grenfell, J. (James), Halim, A.O, & Partl, M.N. (Manfred N.). (2016). Comparison of interlayer bond behavior due to ageing. RILEM Bookseries. doi:10.1007/978-94-017-7342-3_26