A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Falling Weight Deflectometer and Spectral Analysis of Surface Waves Test for Characterizing Pavement Moduli: A Case Study
The report details the results of tests on newly constructed flexible pavement using a Dynatest 9000 Falling Weight Deflectometer and the Spectral Analysis of Surface Waves test. Additional types of field and laboratory tests were also undertaken and are reported in the study. Taken together, the data and analyses represent a detailed case study of the two non-destructive test methods. When dynamic effects and the demonstrated non-linear behavior of the soil are accounted for, Spectral Analysis of Surface Waves and the Falling Weight Deflectometer provide similar subgrade moduli. The excitation frequency of Spectral Analysis of Surface Waves and the Falling Weight Deflectometer differ by two to three orders of magnitude in the surface layer, and one to two orders of magnitude in the subgrade. However, results from Spectral Analysis of Surface Waves and Falling Weight Deflectometer tests for the asphalt concrete are consistent when adjusted to a common frequency. Spectral Analysis of Surface Waves and the Falling Weight Deflectometer were both useful for characterizing the material of Ramp SW. Analysis and application of the data from these techniques should include consideration of dynamic loading, non-linear behavior in the subgrade, and frequency sensitivity in the asphalt.
Falling Weight Deflectometer and Spectral Analysis of Surface Waves Test for Characterizing Pavement Moduli: A Case Study
The report details the results of tests on newly constructed flexible pavement using a Dynatest 9000 Falling Weight Deflectometer and the Spectral Analysis of Surface Waves test. Additional types of field and laboratory tests were also undertaken and are reported in the study. Taken together, the data and analyses represent a detailed case study of the two non-destructive test methods. When dynamic effects and the demonstrated non-linear behavior of the soil are accounted for, Spectral Analysis of Surface Waves and the Falling Weight Deflectometer provide similar subgrade moduli. The excitation frequency of Spectral Analysis of Surface Waves and the Falling Weight Deflectometer differ by two to three orders of magnitude in the surface layer, and one to two orders of magnitude in the subgrade. However, results from Spectral Analysis of Surface Waves and Falling Weight Deflectometer tests for the asphalt concrete are consistent when adjusted to a common frequency. Spectral Analysis of Surface Waves and the Falling Weight Deflectometer were both useful for characterizing the material of Ramp SW. Analysis and application of the data from these techniques should include consideration of dynamic loading, non-linear behavior in the subgrade, and frequency sensitivity in the asphalt.
Falling Weight Deflectometer and Spectral Analysis of Surface Waves Test for Characterizing Pavement Moduli: A Case Study
K. H. Stokoe (author) / W. R. Hudson (author) / B. F. Miner (author)
1991
52 pages
Report
No indication
English
Highway Engineering , Laboratory & Test Facility Design & Operation , Transportation & Traffic Planning , Transportation , Road Transportation , Surface waves , Pavement deflections , Spectrum analysis , Bituminous concrete pavements , Case studies , Modulus of elasticity , Wave dispersion , Elastic deformation , Test methods , Dynamic response , Seismic waves , Highway maintenance , Impact tests , Frequencies , Loads(Forces) , Falling weight deflectometer
Estimation of In-Situ Pavement Layer Moduli Using Falling Weight Deflectometer
| British Library Conference Proceedings | 2003