LABORATORY RESEARCH ON PAVEMENTS CONTINUOUSLY REINFORCED WITH WELDED WIRE FABRIC

RESEARCH WAS CONDUCTED ON CONCRETE PAVEMENTS USING WELDED WIRE FABRIC AS THE PRINCIPAL REINFORCEMENT. THE SPECIMENS CHOSEN WERE 28 FT LONG BY 3 FT WIDE BY 8 INCHES THICK. THE REINFORCEMENT CONSISTED OF EITHER 6 X 12, 0/3, 6 X 12, 00000/0, OR 4 X 12, 00000/0 WELDED WIRE FABRIC. THE SPECIMENS WERE CAST IN A PORTABLE FORM IN WHICH THE AMOUNT OF STEEL, THE LOCATION OF THE STEEL, AND THE DEPTH OF SLAB COULD BE VARIED. EACH OF THE SPECIMENS WAS FABRICATED WITH WEAKENED PLANES SUCH THAT THE SLABS WOULD CRACK AT DEFINITE LOCATIONS IN THE TESTING REGION OF THE SLAB. THIS PERMITTED MEASUREMENT OF STRAINS IN THE FABRIC AT THESE PREDETERMINED CRACKS. THE SLABS WERE TESTED ON AN ELASTIC SUBGRADE HAVING A SUBGRADE MODULUS OF APPROXIMATELY 160 PCI, ALTHOUGH THE SUBGRADE MODULUS COULD BE VARIED WITHIN REASONABLE LIMITS. THE SPECIMENS WERE LOADED WITH VERTICAL STATIC LOADS TO SIMULATE TRAFFIC LOADS AND HORIZONTAL LOADS TO SIMULATE STRESSES INDUCED BY TEMPERATURE CHANGES. ELECTRIC SR-4 STRAIN GAGES WERE PLACED AT VARIOUS LOCATIONS ON THE FABRIC TO DETERMINE THE STRESSES IN THE FABRIC. VERTICAL DEFLECTIONS OF THE SLABS WERE OBTAINED BY USE OF FEDERAL DIAL INDICATORS, AND CRACK WIDTHS OR SURFACE STRAINS IN THE CONCRETE WERE OBTAINED BY USE OF A WHITTEMORE STRAIN GAGE. /AUTHOR/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrbbulletin/238/238-003.pdf
• Supplemental Notes:
  • No 238, pp 39-47, 8 FIG, 13 REF Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • Gutzwiller, M J
  • Waling, J L
• Publication Date: 1960

Media Info

• Media Type: Digital/other
• Pagination: 3p
• Monograph Title: Experimental Continuously-Reinforced Concrete Pavements: Progress Reports-1959
• Serial:
  • Highway Research Board Bulletin
  • Issue Number: 238
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Continuously reinforced concrete pavements; Cracking; Deflection; Fabrication; Loads; Modulus of elasticity; Slabs; Static loads; Steel; Strain gages; Strain measurement; Stresses; Subgrade (Pavements); Temperature; Welded wire fabrics; Width
• Uncontrolled Terms: Horizontal loads
• Subject Areas: Geotechnology; Highways; Materials; Pavements;

Filing Info

• Accession Number: 00206937
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Aug 12 1994 12:00AM