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

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

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

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Published In
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.
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