A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The Florida Department of Transportation (FDOT) has traditionally required that all sampling and testing of asphalt mixtures be at the Contractors production facility. With recent staffing cuts, as well as budget reductions, FDOT has been considering alternative sampling methods which will provide greater staffing flexibility, while at the same time provide assurance that a quality product is placed on the roadway. One of the methods being considered is sampling the asphalt mixture at the roadway. The first objective of this study was to conduct a literature review and survey which included interviewing various transportation engineers to determine which agencies require, or allow, field sampling for acceptance and whether those efforts have been successful. The second objective of this study was to evaluate the sampling and testing variability of samples taken at the plant compared to those taken from the roadway mat and from the paver auger. A statistical evaluation was performed to compare results from this study to the specification limits currently being used. Superpave 9.5 mm and 12.5 mm mixes were sampled on 11 dense-graded projects, and two FC-5 projects (Open-Graded mix) were sampled and tested.
The Florida Department of Transportation (FDOT) has traditionally required that all sampling and testing of asphalt mixtures be at the Contractors production facility. With recent staffing cuts, as well as budget reductions, FDOT has been considering alternative sampling methods which will provide greater staffing flexibility, while at the same time provide assurance that a quality product is placed on the roadway. One of the methods being considered is sampling the asphalt mixture at the roadway. The first objective of this study was to conduct a literature review and survey which included interviewing various transportation engineers to determine which agencies require, or allow, field sampling for acceptance and whether those efforts have been successful. The second objective of this study was to evaluate the sampling and testing variability of samples taken at the plant compared to those taken from the roadway mat and from the paver auger. A statistical evaluation was performed to compare results from this study to the specification limits currently being used. Superpave 9.5 mm and 12.5 mm mixes were sampled on 11 dense-graded projects, and two FC-5 projects (Open-Graded mix) were sampled and tested.
Roadway Sampling Evaluation
D. Watson (author)
2014
47 pages
Report
No indication
English
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