00605670

Component

http://onlinepubs.trb.org...trr/1990/1282/1282-003.pdf

https://scholar.google.co...egel&publication_year=1990

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.

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

01411066

p. 18-26

1990

Transportation Research Record

0309050596

Figures (11) ; Photos (5) ; References (1) ; Tables (5)

Bituminous pavements; Construction management; Longitudinal joints; Paving; Safety; Wedges

Construction; Highways; Safety and Human Factors; I52: Construction of Pavements and Surfacings

TRIS, TRB, ATRI

Mar 31 1991 12:00AM

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• COST-TIME BIDDING CONCEPT: AN INNOVATIVE APPROACH
• CURRENT SURVEY OF COMPUTER STATUS IN THE U.S. CONSTRUCTION INDUSTRY
• DECISION ANALYSIS FRAMEWORK FOR EVALUATING HIGHWAY CONTRACTORS
• DENSITY OF ASPHALT CONCRETE--HOW MUCH IS NEEDED?
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