LONGITUDINAL WEDGE JOINT STUDY
A 5-year study was undertaken to develop a technique for producing more durable longitudinal construction joints in bituminous pavements. The construction procedure evaluated involves forming the joint between adjoining lanes as two overlapping wedges. The wedge joint is formed by a steel plate attached to the paver screed. The effectiveness of the wedge joint was measured by the extent to which this procedure was able to eliminate a density gradient across the joint. Nuclear density testing was undertaken to determine the uniformity of the density across the joint and, hence, the nature of the density gradient. Density measurements were taken across the wedge joint and compared with the standard longitudinal center joint. These measurements indicated that the wedge joint had a more uniform density across the joint and a higher average density than the standard joint. The wedge joint eliminates the density gradient and, hence, lowers the potential for joint deterioration. By eliminating the vertical edge, the wedge joint eliminates the vertical dropoff and offers a safer condition for motorists making lane changes in construction areas.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/0309050596
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Supplemental Notes:
- This paper appears in Transportation Research Record No. 1282, Transportation Construction 1990. 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
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Authors:
- Baker, Robert F
- Croteau, Jack R
- Quinn, John J
- Hellriegel, Edgar J
- Publication Date: 1990
Media Info
- Features: Figures; Photos; References; Tables;
- Pagination: p. 18-26
- Monograph Title: Transportation construction, 1990
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Serial:
- Transportation Research Record
- Issue Number: 1282
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Bituminous pavements; Construction management; Longitudinal joints; Paving; Safety; Wedges
- Old TRIS Terms: Density gradient
- Subject Areas: Construction; Highways; Safety and Human Factors; I52: Construction of Pavements and Surfacings;
Filing Info
- Accession Number: 00605670
- Record Type: Publication
- ISBN: 0309050596
- Files: TRIS, TRB, ATRI
- Created Date: Mar 31 1991 12:00AM