Forensic Investigation of Early Cracking on I-25 in Denver, Colorado

Anderson, Mike; D'Angelo, John; Huber, Gerry

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Forensic Investigation of Early Cracking on I-25 in Denver, Colorado

2001-10-01
By Anderson, Mike ; D'Angelo, John ; Huber, Gerry

File Language:

English

[PDF - 11.53 MB]

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Creators:

Anderson, Mike ; D'Angelo, John ; Huber, Gerry
Corporate Creators:

Asphalt Institute ; Heritage Research Group
Corporate Contributors:

Colorado. Department of Transportation ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

CDOT-DTD-R-2001-10
Resource Type:

Tech Report
Geographical Coverage:

United States ; Colorado
Edition:

Final Report
Corporate Publisher:

Colorado. Department of Transportation
Description:

The pavement distress on I-25 includes both transverse cracking and longitudinal cracking within the wheel paths. The transverse cracking is very likely reflective cracking from the underlying layers. The longitudinal cracking is surface-initiated (top down).Regardless of the cracking mechanism, the appearance of the longitudinal cracks was earlier in the pavement life than would be expected. A sampling plan was developed to obtain cores from two sections, one with distress and the other without distress. A slab was taken from a trench across the lane. Three longitudinal cracks were present in the lane. There was also a comparison to are habilitation project on I-70. I-70 is an HMA overlay of a PCC pavement and the pavement structure will not respond exactly the same; however, it is one year older and has similar traffic to I-25.At each of the longitudinal cracks on I-25 there was segregation present within the mat. The segregation was particularly severe at one of the cracks. There are no signs of moisture damage in the 1997 overlay. Some stripping was observed in the remaining portion of the 1984 mixture and there is some indication of stripping in the older mixture in the lower layers. Stripping does not appear to be severe.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/93435/dot_93435_DS1.pdf
File Type:

[PDF - 11.53 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:02ec29f658901405819d3399f3e87ebef1d9d809e381eb703b04e364db9f75083b72ed8739082ce534f21e5b086ce4486141a47d29f4a829c2afa164755c5037

File Language:

English

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