RESURFACING BRIDGE DECKS
Deterioration of concrete is a problem that exists throughout the highway systems of the United States. In this investigation a system related to resurfacing and restoration of deteriorating concrete bridge decks in South Dakota, pertinent to protective covering and durability of the concrete deck, was developed. Under this study eight high quality mixes using crushed limestone and crushed quartzite on the continuous graded and gap graded basis were tested as overlay concrete with two curing methods for ultimate strength. Four types of bonding agents were used for bonding the overlay concrete to the base concrete. Tensile and shear-bond strength of bonding agents were investigated on the sandblasted saturated surface dry surface of base concrete. Compressive, tensile, flexural and shear strength of overlay concrete mixes were studied with relation to the method of curing. In this project, the shear strength of laboratory bonded specimens were compared with old bridge deck concrete core specimens. This study also included the monitoring of results of penetration of sodium choloride solution on the overlay concrete mixes and base concrete mixes. Latex modified concrete with modified "A" was also tested for strength and sodium chloride penetration for its performance as overlay concrete. A statistical method was used to evaluate the test results. On the basis of this analysis and the conclusions, a preliminary specification was developed to maintain and resurface the deteriorated bridge decks. /FHWA/
- Sponsored by the South Dakota Department of Transportation, and the Federal Highway Administration, DOT.
South Dakota School of Mines and Technology, Rapid CityCivil Engineering Research Center
Rapid City, SD United States 57701
- Coyle, W V
- Iyer, L S
- Publication Date: 1976-11
- Pagination: 193 p.
- TRT Terms: Aggregates; Bridge decks; Concrete; Limestone; Physical properties; Quartzite; Resurfacing; Social values; Statistical analysis; Wear
- Uncontrolled Terms: Concrete properties
- Old TRIS Terms: Community values
- Subject Areas: Data and Information Technology; Geotechnology; Highways; Maintenance and Preservation;
- Accession Number: 00165775
- Record Type: Publication
- Source Agency: Federal Highway Administration
- Report/Paper Numbers: FHWA-SD-77-608(72) Final Rpt.
- Files: TRIS, USDOT
- Created Date: Mar 29 1978 12:00AM