THE CONSTRUCTION OF AN EXPERIMENTAL PRESTRESSED CONCRETE ROAD AT WINTHORPE, NOTTINGHAMPSHIRE

THE PAPER DESCRIBES THE CONSTRUCTION OF AN EXPERIMENTAL PRESTRESSED CONCRETE ROAD AT WINTHORPE, NOTTINGHAMSHIRE. THE METHOD OF PRESTRESSING WAS BY HYDRAULIC JACKS AND GROUND ANCHORAGES. THE PRESTRESSED SLABS HAVE BEEN BLOCKED SO THAT THE PRESTRESS VARIES WITH DAILY AND SEASONAL CHANGES OF TEMPERATURE, AND MEASUREMENTS HAVE SHOWN A PRESTRESS/ TEMPERATURE RELATIONSHIP OF 50-80LB/SQ.IN./C. LOSSES OF PRESTRESS DUE TO CREEP AND SHRINKAGE WERE ABOUT 1200, 1000 AND 600LB/SQ.IN. DURING THE FIRST, SECOND AND THIRD SUMMERS, THE ROAD HAS NEEDED TO BE RESTRESSED EACH YEAR UP TO DATE. INSTRUMENTS IN REFERENCE SLABS INTENDED TO MEASURE SHRINKAGE HAVE SHOWN THAT THE CONCRETE HAS EXPANDED BY AN AVERAGE OF 50 IN./IN. AN AVERAGE COEFFICIENT OF SUBGRADE RESTRAINT OF 1.0 HAS BEEN DETERMINED ON THE ROAD. THE EXPERIMENT INCLUDED 5-IN. AND 7-IN. THICK PRESTRESSED SLABS AND 5-IN., 6-IN., 7-IN. AND 8-IN. THICK REINFORCED CONCRETE SLABS SO THAT A COMPARISON OF THE PERFORMANCE OF PRESTRESSED AND NORMAL CONSTRUCTION UNDER TRAFFIC WILL BE POSSIBLE. /AUTHOR/

• Corporate Authors:

  Institution of Civil Engineers

  One Great George Street, Westminster
  London,   United Kingdom  SW1P 3AA
• Authors:
  • Kidd, R A
  • Stott, J P
• Conference:
  • Institute of Civil Engineers Proceeding
• Publication Date: 1967-3

Media Info

• Pagination: p. 473-498
• Serial:
  • Volume: 66

Subject/Index Terms

• TRT Terms: Anchorages; Construction; Creep; Experimental roads; Hydraulic jacks; Prestressed concrete; Prestressing; Shrinkage; Temperature
• Subject Areas: Bridges and other structures; Construction; Highways;

Filing Info

• Accession Number: 00214713
• Record Type: Publication
• Report/Paper Numbers: Paper 6991
• Files: TRIS
• Created Date: Jun 22 2002 12:00AM