A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Yellowstone River Gravels
The purpose of this investigation was to develop a grading specification that would provide a more satisfactory pavement and be more compatible with source characteristics so they would lessen production and construction difficulties. Conservation of materials, cost savings, decreased asphalt requirements, higher friction surfaces, and mineral filler elimination were associated benefits that appeared to be realizeable as the study progressed. Bituminous pavement mixtures using Yellowstone River aggregates exhibited characteristics associated with over-sanding when produced under the Standard Specifications. This specification nominally limited the -40M fraction to a maximum of 25%, however waivers generally allowed 30% and this figure was often exceeded in production. The high sand fraction in turn required a substantial proportion of fine particles (-80 & -200M) to fill void spaces in the sand. In order to ascertain gradation characteristics of the natural gravel deposits, several sites along the river were chosen for statistical analyses. Data was taken from the files of completed projects which were located at more or less equal distances apart and which provided a large number of samples.
Yellowstone River Gravels
The purpose of this investigation was to develop a grading specification that would provide a more satisfactory pavement and be more compatible with source characteristics so they would lessen production and construction difficulties. Conservation of materials, cost savings, decreased asphalt requirements, higher friction surfaces, and mineral filler elimination were associated benefits that appeared to be realizeable as the study progressed. Bituminous pavement mixtures using Yellowstone River aggregates exhibited characteristics associated with over-sanding when produced under the Standard Specifications. This specification nominally limited the -40M fraction to a maximum of 25%, however waivers generally allowed 30% and this figure was often exceeded in production. The high sand fraction in turn required a substantial proportion of fine particles (-80 & -200M) to fill void spaces in the sand. In order to ascertain gradation characteristics of the natural gravel deposits, several sites along the river were chosen for statistical analyses. Data was taken from the files of completed projects which were located at more or less equal distances apart and which provided a large number of samples.
Yellowstone River Gravels
S. F. Weber (author) / A. Braut (author)
1975
92 pages
Report
No indication
English
Highway Engineering , Construction Equipment, Materials, & Supplies , Mineral Industries , Gravel , Aggregates , Flexible pavements , Particle size , Laboratory tests , Field tests , Performance evaluation , Variations , Extrusive rocks , Cost estimtes , Specifications , Crushing , Granulation , Yellowstone River , Montana
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