NEW LENGTH OF PRESTRESSED HIGHWAY PAVEMENT SLIPFORMED EASILY, QUICKLY

THE 3200 FEET OF PRESTRESSED, 24-FOOT-WIDE CONCRETE PAVEMENT SLIPFORMED ON THE ACCESS ROAD TO THE DULLES AIRPORT OUTSIDE WASHINGTON, D. C., CONSTITUTED THE FIRST FULL-SIZE HIGHWAY PRESTRESSED PAVEMENT CONSTRUCTED. THE WET BURLAP CURING MEDIUM WAS COVERED WITH POLYETHYLENE AND STRAW TO PROTECT THE CONCRETE FROM NIGHTTIME TEMPERATURES WELL BELOW FREEZING. THE FOUNDATION CONSISTS OF A 28-FOOT-WIDE 4% CEMENT-TREATED SUBBASE 6 INCHES THICK, THAT WAS CURED WITH A BITUMINOUS MEMBRANE AND COVERED WITH TWO LAYERS OF 4-MIL POLYETHYLENE TO REDUCE FRICTION UNDER THE SLABS. SOX SLABS WERE USED. PRESTRESSING DETAILS ARE GIVEN. A UNIQUE FEATURE OF THE DESIGN IS THE RELATIVELY LOW PRESTRESS IN THE SLABS; AT THE ENDS THE COMPRESSIVE STRESS IN THE CONCRETE IS ONLY 200 PSI.

• Publication Date: 1972-5

Media Info

• Features: Figures; Photos;
• Pagination: p. 102-4
• Serial:
  • Roads and Streets
  • Volume: 115
  • Issue Number: 5
  • Publisher: Donnelley (Reuben H) Corporation

Subject/Index Terms

• TRT Terms: Concrete pavements; Paving; Prestressed concrete; Prestressing; Slabs
• Subject Areas: Construction; Highways; Pavements;

Filing Info

• Accession Number: 00215545
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 2 1973 12:00AM