United States Department of Transportation
i
Break and Seat of Jointed Reinforced Concrete Pavements: Interim Construction Report
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1994-09-01
[PDF-1.41 MB]
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Alternative Title:Break and seat of jointed reinforced concrete pavements.
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Edition:Interim Construction Report, May 91 - March 92
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Abstract:The purpose of this research is to evaluate the effectiveness of break, seat and overlay strategies for the retardation of reflective cracking in bituminous concrete overlays over PCC pavements. This is part of FHWA's special projects SP-202 in which Ohio, West Virginia and Kentucky are also participating. This report documents construction strategies and techniques, instrumentation installation, and data acquisition during pre-construction, construction and post construction. This is the first (construction) report of the five year research project. The experimental sections are located on I-20 near Minden, La. The core SP-202 experimental features included sections with a break pattern of existing PCC pavement of 6", 18" and 30" with a HMAC overlay, and a control section (no breaking) with a HMAC overlay at transverse joints, and sawing the slab panels every eight feet, seating and HMAC overlay. The overall construction of the roadway was a success, however, the first installation of instrumentation failed as a result of structural failure in the access utility boxes. New, stronger boxes were fabricated and the instrumentation reinstalled approximately 9 months after completing the construction of the experimental sections.
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