Evaluation of Deterioration on US 20 in Webster County, MLR-91-1, 1991

(1991) Evaluation of Deterioration on US 20 in Webster County, MLR-91-1, 1991. Transportation, Department of


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Ten miles of U.S. Highway 20 in Webster County began to show deterioration in 1990. Any deterioration was unexpected, since the road was just constructed in 1986 and 1987. The deterioration looked much like the staining and cracking of D-cracking. Cracking was found on 391 joints throughout the 10 mile four lane divided highway. Evaluation of cores from the project reveal low air contents at those locations where cracking is occurring. The cause of the low air contents can only be speculated on. A possible cause may be the vibration from the paver coupled with the additional vibration at the joints. Other projects constructed in 1986 and 1987 with the same equipment show no signs of distress.

Item Type: Departmental Report
Keywords: Air content, Cracking, Deterioration, Four lane highways, Pavement joints, Pavers, Vibration
Subjects: Transportation > Pavements
Transportation > Roads and highways
Transportation > Research
Transportation > Maintenance and preservation
ID Code: 17174
Deposited By: Iowa DOT Library
Deposited On: 10 Jun 2014 15:36
Last Modified: 10 Jun 2014 15:36
URI: https://publications.iowa.gov/id/eprint/17174