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<p>We address a non-destructive testing of bitumen insulations. A new approach to its <i>in situ</i> monitoring is proposed. It is based on single impact microindentation. To describe the straining process of a bitumen coating, we analyzed Maxwell and Voigt rheological models. It is shown experimentally that Maxwell model suits well for this task. Temporal changes of the rigidity coefficient in the coating depending on the ambient temperature were measured. It has been established that microindentation-based method is effective for the assessment of the insulation aging. Thermal aging experiments and measurements were carried out to confirm the applicability of the proposed approach.</p>

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Evaluation of properties in bitumen insulation by impact microindentation on the base of rheological models

  • 期刊论文

  • 发表日期：

    2025年1月30日

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  • Alexander Kren,
  • Alexander Machikhin

摘要

We address a non-destructive testing of bitumen insulations. A new approach to its in situ monitoring is proposed. It is based on single impact microindentation. To describe the straining process of a bitumen coating, we analyzed Maxwell and Voigt rheological models. It is shown experimentally that Maxwell model suits well for this task. Temporal changes of the rigidity coefficient in the coating depending on the ambient temperature were measured. It has been established that microindentation-based method is effective for the assessment of the insulation aging. Thermal aging experiments and measurements were carried out to confirm the applicability of the proposed approach.