AN EXPERIMENTAL SELF-STRESSING PAVEMENT, RT. 2, GLASTONBURY, FINAL REPORT

IN 1963, THREE SLABS 24' X 500' X 6" THICK WERE PLACED ON RTE. 2 IN GLASTONBURY, CONNECTICUT. LONGITUDINAL STEEL CONSISTED OF 21-1/2" 7-WIRE STRANDS ON 14" CENTERS AND TRANSVERSE STEEL CONSISTED OF #7 RE-BARS ON 2' CENTERS. THE CONCRETE CONTAINED CALCIUM SULFO-ALUMINATE ADHYDRITE WHICH EXPANDED ON HYDRATION AND STRETCHED THE STEEL TO CREATE A SELF-STRESSING PRESTRESSED PAVEMENT. GROWTH OF EACH SLAB WAS ABOUT 1 FOOT WHICH WAS ONLY 1/3 OF THAT NEEDED. HENCE, THE PAVEMENT CRACKED AND BEHAVED SIMILARLY TO A CONTINUOUSLY REINFORCED CONCRETE PAVEMENT. SLEEPER SLABS, SPECIAL TERMINAL JOINTS AND A BOND-BREAKING MEDIUM WERE USED IN THE CONSTRUCTION. STRAINS IN THE STEEL, LENGTH CHANGES OF THE SLABS, CRACK INTERVALS, CRACK OPENINGS, TRAFFIC, AND SURFACE CONDITION WERE ALL OBSERVED FOR 8 YEARS AND THE RESULTS ARE DISCUSSED. THE ADJACENT JOINTED PAVEMENT HAS ENCROACHED THE EXPANSION SPACE OF THE SLABS AND THE SURFACE CONDITION IS POOR. RESURFACING MAY SOON BE NECESSARY. TWO PREVIOUS PUBLISHED REPORTS IN HRB RECORDS PROVIDE MORE DETAILS. /FHWA/

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Filing Info

  • Accession Number: 00212097
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Jun 1 1971 12:00AM