Title: Comparison of In-situ Response from Companion Asphalt Pavement Sections in Different Climates
Abstract: Full-scale flexible pavement test sections were constructed as part of a national cracking group experiment on the NCAT Test Track (Auburn, Alabama) and at MnROAD (Monticello, Minnesota). These sections were intended to provide field performance data for comparison with various laboratory cracking performance tests to improve testing and cracking specifications. The sections were designed with various cracking potential and thus have differing stiffness and dynamic responses under loading. Embedded response instrumentation (i.e., strain gauges and pressure cells) were installed at both sites to evaluate in situ pavement response. The instruments, data collection and processing procedures were kept as uniform as possible to facilitate valid comparisons between sites. This paper compares dynamic pressure response measurements from similar pavement sections constructed in different climates at two accelerated pavement testing facilities. The measured pavement temperature was used to normalize the pavement response data to a reference temperature. As expected, the measured pressure response was affect by the asphalt stiffness and depth of the sensors. The coordination between testing facilities allowed for a more direct comparison of pavement response data and can be improved upon in future investigations to provide further direct comparisons between additional facilities.
Publication Year: 2020
Publication Date: 2020-01-01
Language: en
Type: book-chapter
Indexed In: ['crossref']
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