CONCRETE-POLYMER MATERIALS FOR HIGHWAY APPLICATIONS
The use of concrete-polymer materials for highway applications has been studied with the objective of providing durable materials that would reduce maintenance in highway structures. Several significant developments resulted from this research. Partial-depth polymer impregnation was developed for improving durability of bridge decks. The process includes drying the concrete, cooling the surface, applying a low viscosity monomer solution to a sand cover, and permitting it to soak into the concrete, and applying heat to polymerize the monomer in the concrete to a depth of 0.5 in. (1.3 cm) or more. Post-tensioned polymer-impregnated beams were made and tested to determine the structural behavior. Beams with an I-shaped cross-section and a span of 8 ft (2.7 m) were fully impregnated with a monomer solution. High strength wire tendons were post-tensioned and the beams were tested to determine the flexural and shear behavior. Significant increases in strength and stiffness were observed. Time-dependent deflections were reduced by an order of magnitude. Polymer concrete was developed for repairing bridge decks. Clean, dry, graded aggregate is placed in the repair area and a monomer system that has sufficient promoter and initiator to polymerize at ambient conditions is applied to fully saturate the aggregate. Polymerization occurs in 30 to 45 minutes, producing a sound and durable repair. A polymer concrete overlay was developed to waterproof bridge decks. A thin layer of dry sand is covered with coarse aggregate. Two monomer solutions are applied and polymerization occurs at ambient temperature. (FHWA)
- Study conducted in cooperation with the Department of Transportation, Federal Highway Administration. Research Study Title: "Polymer-Impregnated Concrete for Highway Application".
University of Texas, AustinCenter for Highway Research, 200 West 21st Street
Austin, TX USA 78712
Texas State Department of Highways & Public TranspTransportation Planning Division, P.O. Box 5051
Austin, TX USA 78763
- Fowler, D W
- Publication Date: 1979-3
- Pagination: 32 p.
- TRT Terms: Admixtures; Beams; Bridge decks; Durability; Impregnation (Engineering); Polymer concrete; Posttensioning; Road construction; Waterproofing
- Subject Areas: Highways; Materials; I32: Concrete;
- Accession Number: 00319122
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: FHWA-TX-79-03+114-9FFinal Rpt.
- Contract Numbers: Res Stdy 3-9-71-114
- Files: TRIS, STATEDOT
- Created Date: Nov 19 1980 12:00AM