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Assessment of Bond Strength on Geosynthetic Interlayered Asphalt Overlays Using FEM

  • S. ShiyamalaaEmail author
  • K. Rajagopal
Conference paper
  • 44 Downloads
Part of the Lecture Notes in Civil Engineering book series (LNCE, volume 56)

Abstract

Reflective cracking is the major issue in hot mix asphalt overlays. Many methods are developed to retard these reflective cracking; among them, the most suitable method is the usage of interlayers. Geosynthetics has good tensile strength and can act as a stress reliever thus making these suitable as an interlayer for reducing the propagation of reflective cracking in hot mix asphalt overlay. The inclusion of geosynthetics in HMA overlays affect the bond between the overlay and existing pavement. The reduction in bond strength between the overlay and existing pavement will lead to delamination of the overlay. This study is going to explain how the bond strength is going to vary for different geosynthetics namely, coir, jute and synthetic interlayered asphalt overlays using finite element analysis. Prony parameters are going to be used to define HMA Property. The cohesive zone model is adopted to define the interface properties in the numerical model. The bond strength of geosynthetic interlayered asphalt overlays at three different temperatures as 10, 20 and 30 °C are going to be evaluated using finite element analysis.

Keywords

Reflective cracking Hot mix asphalt overlays Geosynthetics Finite element analysis 

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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  1. 1.Civil Engineering DepartmentIndian Institute of Technology MadrasChennaiIndia

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