Strategy for an Improved Mechanistic-empirical Flexible Pavement Treatment Design

Austroads: Transport Research and Trends

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Following the update of the Austroads Guide to Pavement Technology Part 5: Pavement Evaluation and Treatment Design in 2019, Austroads commissioned the development of a strategy for future improvement of the mechanistic-empirical procedure (MEP) used in pavement rehabilitation and strengthening treatment design.

This webinar, presented by Dr Didier Bodin and Dr Geoff Jameson, outlines future research direction derived from the review of national and international literature and road agency best practice. Priority areas were identified through engagement with pavement designers across road agencies and industry. The main topics presented include:

Methods to characterise past and future fatigue damage of existing bound pavement layers.
Design method to quantify the extent of reflective cracking in treatment layers.
Enhanced use of traffic speed deflectometer data.

The roadmap for short, medium and long-term strategy will inform future research program towards providing pavement designers with improved pavement rehabilitation design procedures in the near future.

The webinar also discusses practical aspects of the pavement and subgrade layers moduli back-calculation from measured surface deflections.

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