Improvement of Longitudinal Joints in Asphalt Pavement, HR-215, 1987

(1987) Improvement of Longitudinal Joints in Asphalt Pavement, HR-215, 1987. Transportation, Department of


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Research is reported which attempted to identify construction procedures that will provide an improved centerline joint on asphalt concrete pavements. Various construction procedures and their evaluation are described. Core densities were made and visual inspections were made 3 years after construction. Center cracking was measured at 4, 5, and 6 years. The only procedure to rank the same when comparing cracking and density (delete the 1:1 slope shoe on the edge) is described. This procedure had the highest average density and also the least cracking through 1985. This method provided the best performance for 4 years after construction and involved the removal of the 1:1 slope shoe from the paver when placing the surface course. This method had 9.0% cracked after 4 years and 100% cracked after 6 years of service.

Item Type: Departmental Report
Keywords: Asphalt pavements, Center lines, Cores (Specimens), Density, Evaluation, Improvements, Longitudinal joints, Pavement cracking, Pavement joints, Pavement performance, Paving
Subjects: Transportation > Pavements
Transportation > Roads and highways
Transportation > Research
Transportation > Design and Construction
ID Code: 16409
Deposited By: Iowa DOT Library
Deposited On: 18 Mar 2014 20:36
Last Modified: 05 Nov 2014 15:56