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Precast, Prestressed Concrete for Bridge Decks
| Content Provider | Semantic Scholar |
|---|---|
| Author | Gutzwiller, Martin J. Lee, Robert H. Scholer, Charles F. |
| Copyright Year | 1971 |
| Abstract | THE OBJECT WAS TO DEVELOP A BRIDGE DECK UNIT THAT COULD REPLACE A DETERIORATED DECK IN THE SHORTEST TIME. INHERENT IN THE PRECAST CONSTRUCTION IS THE QUALITY CONTROL FACTOR FOR MIXING AND PLACING CONCRETE. LABORATORY TESTS DEVELOPED A SLAB 6 INCHES THICK AND 4 FEET WIDE PRESTRESSED ALONG ITS LONGITUDINAL AXIS. THE BUTTING JOINT THAT PRODUCED THE LOWEST STRESS CONCENTRATION PROVED TO BE A FLAT TONGUE-AND-GROOVE JOINT SEPARATED BY A 1/16-INCH NEOPRENE PAD. A CAULKING SEALANT WAS PLACED IN THE TOP SURFACE OF THE JOINT TO MAKE THE JOINT WATERPROOF. TO PROVIDE CONTINUITY BETWEEN THE SLAB AND SUPPORTING BEAMS, A HOLD-DOWN DEVICE USED BY ASSOCIATION OF AMERICAN RAILROADS TO FASTEN RAILS TO PRECAST CONCRETE TIES WAS TESTED AND USED. ACTUAL FIELD INSTALLATIONS ARE NOW BEING OBSERVED AND STRESS MONITORED WITH SATISFACTORY SUCCESS. /FHWA/ |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://onlinepubs.trb.org/Onlinepubs/sr/sr116/116-007.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
