RAPID DETERMINATION OF THE CHLORIDE PERMEABILITY OF CONCRETE
Techniques have been developed for determination of the permeability of a variety of concretes to chloride ions in a relatively rapid period of time. The most promising method involves application of d.c. voltage in the range of 60.0-80.0 volts for 6-hours to either a section of a reinforced concrete bridge deck or a core taken from a concrete structure. Both variations involve conditioning of the specimen prior to test so as to eliminate test anomalies caused by low slample moisture contents. Core specimens can be tested at the rate of one specimen per day with a total of 2 days needed for a complete test including conditioning. The field apparatus is capable of conducting four tests within one working week on a given bridge deck. Results have been shown to yield reasonably good correlation with FHWA 90-day ponding data on companion specimens. Concretes can be ranked according to high, moderate, low, or very low chloride permeability. Further work is needed in order to make the test more applicable to field testing of bridge deck overlays. (FHWA)
- Record URL:
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Corporate Authors:
Construction Technology Laboratories, Inc.
5400 Old Orchard Road
Skokie, IL United States 60077-1030Federal Highway Administration
Engineering Research and Development Bureau, 1200 New Jersey Avenue, SE
Washington, DC United States 20590 -
Authors:
- WHITING, D
- Publication Date: 1981-9
Media Info
- Media Type: Digital/other
- Pagination: 174 p.
Subject/Index Terms
- TRT Terms: Bridge decks; Chlorides; Concrete; Concrete structures; Core samples; Overlays (Pavements); Permeability; Reinforced concrete bridges; Testing
- Uncontrolled Terms: Rapid methods
- Old TRIS Terms: Cores
- Subject Areas: Highways; Materials; I32: Concrete;
Filing Info
- Accession Number: 00345771
- Record Type: Publication
- Report/Paper Numbers: FHWA-RD-81-119 Final Rpt., FCP 34K1-012
- Contract Numbers: DOT-FH-11-9305
- Files: NTL, TRIS, USDOT
- Created Date: Feb 27 1982 12:00AM