Underseal Evaluation Project: Poweshiek County I-80 Near Milepost 189.5, Eastbound Roadway, MLR-85-10, 1985

(1985) Underseal Evaluation Project: Poweshiek County I-80 Near Milepost 189.5, Eastbound Roadway, MLR-85-10, 1985. Transportation, Department of

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Abstract

The purpose of this project was to determine the optimal hole pattern needed for undersealing work, and also to determine if it is feasible to underseal a roadway with existing longitudinal subdrains without plugging the subdrain system. At the test site the hole pattern had little effect on the grout distribution. It was found that the hole pattern, to be effective, must locate existing voids and that holes must extend at least 2 in. (5 cm) below the underside of the pavement. It appeared that pavements can be undersealed without significant damage to the existing subdrains, but special care is needed to assure that excess grout is not injected into the drainage system. Recommendations are made concerning the hole pattern, grout efflux time, and procedures for minimizing the risk of plugging the subdrains with grout.

Item Type: Departmental Report
Keywords: Concrete pavements, Holes, Pavement maintenance, Sealing (Technology), Subdrains, Undersealing, Patterns
Subjects: Transportation
Transportation > Roads and highways
Transportation > Research
ID Code: 16101
Deposited By: Iowa DOT Library
Deposited On: 18 Feb 2014 17:11
Last Modified: 01 Oct 2014 11:48
URI: http://publications.iowa.gov/id/eprint/16101