SAWED JOINTS IN CONCRETE PAVEMENTS: PROGRESS AND PROBLEMS

THE PRACTICE OF CUTTING JOINTS IN THE HARDENED CONCRETE BY MEANS OF SPECIAL SAWING EQUIPMENT OF VARIOUS MAKES UTILIZING DIAMOND OR SILICON CARBIDE BLADES OR DISCS IS DESCRIBED. THE PURPOSE OF EXPERIMENTING WITH SAWED JOINTS WAS TO FIND A TYPE OF JOINT THAT WOULD CAUSE SMOOTHER RIDING AND BE LESS SUBJECT TO SPALLING THAN THE CUSTOMARY FORMED JOINTS. IT HAS BEEN TRIED WITH APPARENT SUCCESS UPON A VARIETY OF PAVEMENT DESIGNS BOTH REINFORCED AND PLAIN WITH SLAB LENGTHS FROM 15 TO 100 FEET, BOTH WITH AND WITHOUT LOAD TRANSFER DEVICES OF VARIOUS DESIGNS. A VARIETY OF SAWING EQUIPMENT IS AVAILABLE FROM A NUMBER OF MANUFACTURERS. THE COST OF SAWING VARIES WITH DEPTH. COST ALSO DEPENDS UPON THE TYPE OF AGGREGATE, AGE OR HARDNESS OF CONCRETE MORTAR AT THE TIME OF SAWING, DEPTH OF CUT, TYPE OF EQUIPMENT AND SKILL OF OPERATORS. PROBLEMS IN REGARD TO JOINT SPACING, WIDTH OF CUT, AND SEALING AND CURING ARE DISCUSSED.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrbbulletin/132/132-004.pdf
• Supplemental Notes:
  • No 132, pp 31-34 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:
  • Coppage, E J
• Publication Date: 1956

Media Info

• Media Type: Digital/other
• Pagination: 4p
• Monograph Title: Concrete control and construction
• Serial:
  • Highway Research Board Bulletin
  • Issue Number: 132
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Aggregates; Carbides; Concrete curing; Concrete hardening; Concrete pavements; Drill bits; Economics; Joint sealing; Pavement design; Sawed joints; Silicon alloys; Spacing
• Uncontrolled Terms: Hardened concrete
• Old TRIS Terms: Diamond bits
• Subject Areas: Construction; Economics; Geotechnology; Highways; Pavements;

Filing Info

• Accession Number: 00215130
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Apr 28 1994 12:00AM