00099907

Component

http://onlinepubs.trb.org...s/trr/1975/535/535-002.pdf

http://scholar.google.com...lips&publication_year=1975

Because of past difficulties with joint supports in concrete pavements, New York began an investigation of plastic-coated dowels in 1972. This paper describes the construction and early performance of 5 pavements built to satisfy 3 major objectives: first, to identify construction problems related to the dowels; second, to determine if uniform joint movements are maintained; and, third, to determine the long-range corrosion resistance of the dowels. The plastic-coated dowels evaluated have a 2-layer coating of 4 mils (0.1 mm) of asphalt covered by 17 mils (0.4 mm) of polyethylene; they were welded or clipped into basket assemblies and staked to the subbase before paving with a slipform paver. Construction evaluation consisted of observing installation, checking alignment and coating damage, and noting joint cracks after paving. Six dowel samples were removed from the completed pavement for laboratory testing. Joint movement and pavement cracking have been monitored for up to 2 years. Observations and measurements during construction indicate that assemblies of plastic-coated dowels were easy to install and provided satisfactory control of joint crack formation. Some problems with dowel misalignment, damaged coatings, and slippage of coatings off the dowel ends were observed, but these are not considered serious inasmuch as they can be corrected. Performance observations indicate that joints are moving uniformly in all 5 pavements, and no distress has appeared that can be related to the dowels. Based on these observations, plastic-coated dowels show promise as transverse joint load-transfer devices for heavy-duty portland cement concrete pavements.

Publication of this paper sponsored by Committee on Rigid Pavement Construction. 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.

01411396

pp 14-23

1975

Transportation Research Record

54th Annual Meeting of the Transportation Research Board

0309023866

Digital/other

Figures (7) ; Photos; References (6) ; Tables (6)

Asphalt; Building; Concrete pavements; Corrosion resistance; Dowels (Fasteners); Ethylene resins; Facilities; Installation; Joints; Laboratory tests; Measurement; Motion; Pavement cracking; Pavement performance; Paving; Plastic coatings

Polyethylene

New York (State)

New York (State)

Construction; Geotechnology; Highways; Maintenance and Preservation; Materials

TRIS, TRB

Nov 5 1975 12:00AM

• CONCRETE PAVEMENT JOINTING AND SEALING METHODS
• DEPTH OF CONCRETE COVER OVER BRIDGE DECK REINFORCEMENT
• DEVELOPMENT OF A SPECIFICATION TO CONTROL RIGID PAVEMENT ROUGHNESS
• PERFORMANCE EVALUATION OF UTAH'S CONCRETE PAVEMENT JOINT SEALS
• PRESTRESSED PAVEMENT DEMONSTRATION PROJECT
• SOME REFINEMENTS IN EXPANSION JOINT SYSTEMS
• THE USE OF TIME-LAPSE PHOTOGRAPHY AND COMPUTER SIMULATION FOR LOADER-TRUCK PRODUCTION STUDIES