Rosphalt 50 bridge deck overlay
This report summarises the findings of a 8-year study of five bridge decks overlaid with Rosphalt-50, a proprietary asphalt paving mix developed by the Royston Laboratories Division of Chase Corporation in Pittsburgh, PA. The mix is produced by using polymeric additives. The purpose of this project is to evaluate the effectiveness and performance of a Rosphalt 50 bituminous overlay in two capacities: as a bridge deck wearing course and as a waterproofing membrane to prevent chlorides from penetrating the concrete bridge deck. The effectiveness of the material can be determined by comparing construction and maintenance costs of "Rosphalt 50" to the current prevailing methods of bridge deck protection, such as latex modified concrete and standard asphalt overlays with waterproofing membranes. Significant deterioration of the Rosphalt 50 asphalt overlays was noted at most of the sites after 8 years of service. As a result, Rosphalt 50 could be used as a 7 or 8 years overlay alternative but further study of current materials would be required before it is recommended as a longer term overlay alternative.
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Corporate Authors:
Pennsylvania. Department of Transportation. Bureau of Construction and Materials
Harrisburg, Pennsylvania United States -
Authors:
- Hughes, J J
- Publication Date: 1994-8
Language
- English
Media Info
- Pagination: 24p + appendices
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Serial:
- Issue Number: FHWA-PA-93-011+83-44
Subject/Index Terms
- TRT Terms: Bridge decks; Field tests; Life cycle costing; Materials; Overlays (Pavements); Pavement performance; Polymer asphalt; Waterproofing; Wearing course (Pavements)
- ATRI Terms: Bridge deck; Field test; Life cycle costs; Materials; Overlay; Pavement performance; Polymer modified asphalt; Waterproofing; Wearing course
- Subject Areas: Finance; Highways; Materials;
Filing Info
- Accession Number: 01400417
- Record Type: Publication
- Source Agency: ARRB
- Files: ITRD, ATRI
- Created Date: Aug 23 2012 7:35PM