Comparison of the Use of a Notched Wedge Joint vs. Traditional Butt Joints in Connecticut – Phase 1 Report

Performance of Hot Mix Asphalt (HMA) longitudinal joints has been an item of increasing scrutiny in Connecticut. The traditional butt joint has typically been the method used in Connecticut. These joints have been reportedly opening up creating a longitudinal crack at the joint thus contributing significantly to the premature failure of the wearing surface. It has been widely speculated that alternative longitudinal joint construction methods could be employed to reduce the rate at which joints fail. Here, the Notched Wedge Joint is investigated along with the traditionally used butt joint for comparison purposes. Two resurfacing projects were constructed in Connecticut during the 2006 paving season that utilized the notched wedge joint construction method. These projects were investigated as to their nuclear density and volumetric density from cut cores along the longitudinal joints. Also investigated during the 2006 construction season were several resurfacing projects which utilized the traditional butt joint.

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• Record URL:
  • https://rosap.ntl.bts.gov/view/dot/16610
• Corporate Authors:

  University of Connecticut, Storrs

  Connecticut Transportation Institute
  179 Middle Turnpike
  Storrs, CT  United States  06269-5202

  Connecticut Department of Transportation

  Newington, CT  United States  06131-7546

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Zinke, Scott
  • Mahoney, James
  • Shaffer, Gregg
• Publication Date: 2008-5-14

Language

• English

Media Info

• Media Type: Print
• Edition: Phase 1 Report
• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: 93p

Subject/Index Terms

• TRT Terms: Asphalt pavements; Butt joints; Core samples; Density; Hot mix asphalt; Longitudinal joints
• Uncontrolled Terms: Notched wedge joints
• Geographic Terms: Connecticut
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 01112763
• Record Type: Publication
• Report/Paper Numbers: CT-2249-2-07-6, CAPLAB 2-2007
• Contract Numbers: SPR-2249
• Files: NTL, TRIS, USDOT, STATEDOT
• Created Date: Oct 14 2008 3:24PM