A study group from the U.S. consisting of contractors, National Asphalt Pavement Association, Asphalt Institute, Federal Highway Administration (FHWA), and State Highway agencies visited Europe in the fall of 1990 to observe the quality of roads in Europe and to discuss construction procedures as well as contracting procedures. One of the items with which this group was most impressed was the performance of SMA mixtures. Based on this trip and the observed performance of SMA mixtures, it was decided to construct a SMA test section in the US. Major SMA projects were constructed in the U.S. in 1991 in the following five states: Georgia, Indiana, Michigan, Missouri, and Wisconsin. The objective of this report is to discuss the construction of five SMA sections and to summarize what was learned from these projects. This is project is a total of 47 pages. Due to its size, it is presented in two PDF files linked from the HTML formatted front page. The main body is in the first file, 35p. Appendices are in second file, 12p.
This report summarizes the construction and early performance of a field trial of a Porous Friction Course (PFC) in Indiana. The PFC is compared to an...
This study found that, even though more research is needed in the correlation of laboratory mixing with pugmill mixing of hot mix asphalt, repeatabili...
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United States Department of Transportation
[PDF-1.61 MB]
