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Statistical investigation of two different interlayer shear test methods

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Abstract

The performance of multi-layered pavement systems strongly depends on interlayer bonding. In order to evaluate this parameter, some countries have developed their own test method. However, different devices generally provide different results due to the test conditions. In this article, the statistical investigation of two interlayer shear test methods is shown considering different asphalt materials and different specimen preparation techniques. Both test methods provided comparable results showing the same ranking in interlayer shear stress for different test conditions and the same level of precision in terms of scatter of the results. Moreover, the repeatability limit was found to be dependent on the test method, the pavement material and the compaction technique. It is worth noting that this extensive experimental investigation paves the way for the incoming European Standardization process involving the two shear test methods.

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Authors and Affiliations

  1. Istituto di Idraulica e Infrastrutture Viarie, Università Politecnica delle Marche, Via Brecce Bianche, 60131, Ancona, Italy

    Felice A. Santagata, Gilda Ferrotti & Francesco Canestrari

  2. Department Materials and Systems for Civil Engineering, Swiss Federal Laboratories for Materials Testing and Research (EMPA), Überlandstrasse 129, 8600, Dubendorf, Switzerland

    Manfred N. Partl

Authors
  1. Felice A. Santagata
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  2. Gilda Ferrotti
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  3. Manfred N. Partl
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  4. Francesco Canestrari
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Correspondence to Francesco Canestrari.

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Santagata, F.A., Ferrotti, G., Partl, M.N. et al. Statistical investigation of two different interlayer shear test methods. Mater Struct 42, 705–714 (2009). https://doi.org/10.1617/s11527-008-9414-6

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  • DOI: https://doi.org/10.1617/s11527-008-9414-6

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