A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Sampling Location Impact on Measured Asphalt Content of Hot Mix Asphalt
In May 2000, CDOT requested a forensic study of a project located on I- 25 north of Denver. The request was made because, within a year of the 1997 overlay, longitudinal cracking appeared in the surface. Transverse cracks were attributed to reflective cracking. However, the longitudinal cracks appeared to be surface initiated. In October 2000, a forensic team reviewed the project and established a sampling and testing plan to take cores from the roadway. Based on data analysis of the cores, the higher than expected in-place air voids, the low effective asphalt, and segregation within the mat, all contributed to the early cracking. The forensic team suggested that CDOT investigate the sampling locations for hot mix asphalt (HMA) that are allowed by Colorado Procedure 41 to determine if all locations provide statistically equivalent asphalt contents.
Sampling Location Impact on Measured Asphalt Content of Hot Mix Asphalt
In May 2000, CDOT requested a forensic study of a project located on I- 25 north of Denver. The request was made because, within a year of the 1997 overlay, longitudinal cracking appeared in the surface. Transverse cracks were attributed to reflective cracking. However, the longitudinal cracks appeared to be surface initiated. In October 2000, a forensic team reviewed the project and established a sampling and testing plan to take cores from the roadway. Based on data analysis of the cores, the higher than expected in-place air voids, the low effective asphalt, and segregation within the mat, all contributed to the early cracking. The forensic team suggested that CDOT investigate the sampling locations for hot mix asphalt (HMA) that are allowed by Colorado Procedure 41 to determine if all locations provide statistically equivalent asphalt contents.
Sampling Location Impact on Measured Asphalt Content of Hot Mix Asphalt
M. Abu-Hassan (author)
2002
56 pages
Report
No indication
English
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