SPATIAL VARIABILITY OF FALLING WEIGHT DEFLECTOMETER DATA: A GEOSTATISTICAL ANALYSIS
Falling Weight Deflectometer (FWD) data and the corresponding pavement stiffness moduli and deflection basin areas vary as functions of both time and space. This paper focuses primarily on extracting information from the spatial variability of FWD deflection data while briefly discussing the background of geostatistics, the development of basic geostatistical theory, MN/ROAD test results in light of geostatistics, multivariate analyses, and the potential value of combining classical statistics and geostatistics for pavements engineering. Spatial variability occurs both horizontally and vertically within a pavement system; it is inherent in the system due to the heterogeneity of the material composing the subgrade, and is further influenced by the construction process and the resulting variations in density, moisture content, and thickness of the subbase, base, and surface layers.
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Corporate Authors:
Minnesota Department of Transportation
395 John Ireland Boulevard
St Paul, MN United States 55155 -
Authors:
- Kestler, M A
- Harr, M E
- Berg, R L
- JOHNSON, D M
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Conference:
- 4th International Conference, Bearing Capacity of Roads and Airfields
- Location: Minneapolis, MN
- Date: 1994-8-17 to 1994-8-21
- Publication Date: 1994
Language
- English
Media Info
- Features: Figures; References;
- Pagination: p. 317-330
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Serial:
- Volume: 1
Subject/Index Terms
- TRT Terms: Base course (Pavements); Deflection; Density; Falling weight deflectometers; Materials; Moisture content; Multivariate analysis; Pavements; Stability analysis; Statistical analysis; Stiffness; Subbase (Pavements); Subgrade (Pavements); Surfaces; Thickness
- Uncontrolled Terms: Base; Data; Moduli; Spatial variability; Subbase
- Old TRIS Terms: Basins; Geostatistical analysis; Layers
- Subject Areas: Data and Information Technology; Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways;
Filing Info
- Accession Number: 00730060
- Record Type: Publication
- Files: TRIS, STATEDOT
- Created Date: Nov 27 1997 12:00AM