Journal Published Online: 22 March 2021
Volume 49, Issue 6

Evaluation and Development of Performance-Engineered Specifications for Monotonic Loading Cracking Performance Assessment Tests and Indicators

CODEN: JTEVAB

Abstract

This study investigated the validity of various monotonic cracking performance assessment testing standards and indicators to describe the expected cracking performance in the field. A total number of 17 field test sections with known field cracking performance were selected and evaluated. Field cores were extracted from these sections, and a comprehensive laboratory testing program was carried out. The authors conducted four monotonic testing standards and calculated 11 performance indicators. The study findings showed that there was no direct correlation between the laboratory testing results of monotonic tests and indicators and the observed field cracking performance. The variable air void content and thickness of the extracted field cores are believed to influence the laboratory testing results of monotonic tests and indicators. Therefore, this study proposed an alternative approach to develop performance specifications (thresholds) for monotonic tests and indicators. The thresholds were developed indirectly using a correlation between cyclic testing and both monotonic tests and the observed field cracking performance. The results demonstrated the effectiveness and success of the proposed approach in developing performance thresholds. Pass/fail cracking performance assessment thresholds were proposed for various monotonic indicators to distinguish between asphalt mixes with good, fair, and poor cracking resistance. Besides, the study recommends the Weibull cracking resistance index, determined from the indirect tension test, as a simple performance indicator to assess mixes resistance to cracking.

Author Information

Alkuime, Hamza
Department of Civil Engineering, The Hashemite University, Zarqa, Jordan
Kassem, Emad
Department of Civil and Environmental Engineering, University of Idaho, Moscow, USA
Bayomy, Fouad M. S.
Department of Civil and Environmental Engineering, University of Idaho, Moscow, USA
Nielsen, Richard J.
Department of Civil and Environmental Engineering, University of Idaho, Moscow, USA
Pages: 19
Price: $25.00
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Stock #: JTE20200590
ISSN: 0090-3973
DOI: 10.1520/JTE20200590