FATIGUE TESTS OF PRESTRESSED CONCRETE PAVEMENTS

THE FATIGUE CHARACTERISTICS OF PRESTRESSED CONCRETE PAVEMENTS WERE STUDIED BY REPETITIVE MOVING LOAD TESTS ON 16 REDUCED SCALE PRESTRESSED CONCRETE SLABS. EACH SLAB WAS 16 FT LONG, 12 FT WIDE, AND 1 IN. THICK. VARIABLES WERE MAGNITUDE OF LOAD, AMOUNT OF LONGITUDINAL AND TRANSVERSE PRESTRESS, AND SUBGRADE STRENGTH. RELATIONSHIPS WERE ESTABLISHED BETWEEN LOAD MAGNITUDE, PRESTRESSED PAVEMENT PROPERTIES, AND THE NUMBER OF LOAD COVERAGES CAUSING FAILURE. DATA FROM TESTS ON SLABS WITH VARYING MAGNITUDES OF PRESTRESS INDICATE THAT A MINIMUM PRESTRESS OF APPROXIMATELY 30 PSI IN BOTH LONGITUDINAL AND TRANSVERSE DIRECTIONS IS REQUIRED TO AVOID TOP SURFACE CRACKING WHEN RELATIVELY FEW MOVING LOADS GREATER THAN THOSE CAUSING BOTTOM SURFACE CRACKING ARE APPLIED REPEATEDLY AT INTERIOR LOCATIONS. DATA FROM TESTS ON SLABS CAST ON FOUNDATIONS OF DIFFERENT STRENGTHS INDICATED THAT AN INCREASE IN THE FOUNDATION STRENGTH RESULTED IN AN INCREASE IN THE NUMBER OF LOAD COVERAGES CAUSING FAILURE. /AUTHOR/

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• Supplemental Notes:
  • No 239, pp 175-196, 18 FIG, 8 TAB, 8 REF
• Authors:
  • Christensen, A P
  • Colley, B E
• Publication Date: 1968

Media Info

• Serial:
  • Highway Research Record
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Accelerated tests; Concrete pavements; Fatigue tests; Foundations; Load tests; Motion; Moving industry; Prestressed concrete; Prestressing; Repeated loads; Slabs; Subgrade (Pavements)
• Subject Areas: Freight Transportation; Highways; Pavements;

Filing Info

• Accession Number: 00206988
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Jan 31 1994 12:00AM