Test Method to Evaluate the Effect of Interface Bond Conditions on Top-Down and Reflective Cracking

Authors

  • Yu Chen University of Florida
  • George Lopp University of Florida
  • Reynaldo Roque University of Florida

DOI:

https://doi.org/10.4186/ej.2012.16.4.91

Keywords:

Interface, bond, asphalt, cracking, fracture.

Abstract

A composite specimen interface-cracking (CSIC) test was developed to evaluate the effect of the characteristics of the interface between asphalt layers on resistance to top-down and reflective cracking. The system involves repeated tensile loading and monitoring of the rate of damage development (reduction in stiffness) on composite specimens specifically designed for this purpose. Top-down cracking tests were performed on open-graded friction course (OGFC) mixtures placed on dense-graded mixtures using both a conventional tack coat and a polymer-modified asphalt emulsion (PMAE) at a higher application rate. Reflective cracking tests were performed on dense-graded mixtures. Results clearly indicated that use of polymer-modified bonding material significantly reduced the rate of damage development for both top-down and reflective cracking. The testing and interpretation methods developed can be used to optimize bonding materials and application rates for enhanced cracking performance. The methods may also provide a suitable specification test for bonded systems.

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Author Biographies

Yu Chen

Civil and Coastal Engineering, University of Florida, Gainesville, Florida, USA

George Lopp

Civil and Coastal Engineering, University of Florida, Gainesville, Florida, USA

Reynaldo Roque

Civil and Coastal Engineering, University of Florida, Gainesville, Florida, USA

Published

Vol 16 No 4, Feb 27, 2012

How to Cite

[1]
Y. Chen, G. Lopp, and R. Roque, “Test Method to Evaluate the Effect of Interface Bond Conditions on Top-Down and Reflective Cracking”, Eng. J., vol. 16, no. 4, pp. 91-98, Feb. 2012.