A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Measuring Directional Stiffnesses in Pavement Base Material
Unbound aggregate base layers in a quarry haul road in Georgia were characterized using embedded sensors and in-situ seismic testing. Two sections of the road were constructed as inverted pavements, one using a South African Roads Board method and the other using a conventional Georgia Department of Transportation method. A third was constructed using a traditional method. Horizontally propagating compression and shear waves were measured under varying loading conditions to determine the stiffnesses. It was found that the Georgia section was as good as the South African Section. Surprisingly, the traditional section was found to be somewhat stiffer than the other sections. This higher stiffness is thought to be due to a prolonged period of compaction prior to construction of the unbound aggregate base layer. Additionally, the negative pore-water pressures in the partially saturated granular base had a significant impact on the stiffness of the UAB layer, especially under small load levels.
Measuring Directional Stiffnesses in Pavement Base Material
Unbound aggregate base layers in a quarry haul road in Georgia were characterized using embedded sensors and in-situ seismic testing. Two sections of the road were constructed as inverted pavements, one using a South African Roads Board method and the other using a conventional Georgia Department of Transportation method. A third was constructed using a traditional method. Horizontally propagating compression and shear waves were measured under varying loading conditions to determine the stiffnesses. It was found that the Georgia section was as good as the South African Section. Surprisingly, the traditional section was found to be somewhat stiffer than the other sections. This higher stiffness is thought to be due to a prolonged period of compaction prior to construction of the unbound aggregate base layer. Additionally, the negative pore-water pressures in the partially saturated granular base had a significant impact on the stiffness of the UAB layer, especially under small load levels.
Measuring Directional Stiffnesses in Pavement Base Material
R. G. Terrell (author)
2002
152 pages
Report
No indication
English
Construction Equipment, Materials, & Supplies , Highway Engineering , Measurement , Stiffness , Pavement bases , Test and evaluation , Compression , Shear properties , Transportation , Detectors , Impact , Layers , Water , Aggregates(Materials) , Wave propagation , Pressure , Embedding , Inversion , Pore pressure , Seismology , Elastic waves
Correlations Between Superpave Asphalt Stiffnesses and In-Service Pavement Performance
| British Library Online Contents | 2001
Cross section stiffnesses increasing method of structure using cross section stiffnesses
| European Patent Office | 2018
Evaluation of the elastic stiffnesses of multi-directional laminates by bending tests
| BASE | 2018
Exact Stiffnesses for Tapered Members
| Online Contents | 1996
Exact Stiffnesses for Tapered Members
| British Library Online Contents | 1996