00730324

Component

https://doi.org/10.1177/0361198196152600115

https://scholar.google.co...ture&publication_year=1996

This study focuses on the use of digital image techniques to evaluate and develop quantitative measures of fabric for fine-grained granular materials to assess degrees of homogeneity and isotropy. The description of a procedure performed to prepare homogeneous cylindrical sand specimens is presented. Two techniques were performed to investigate the homogeneity. The specimens were preserved with an ultralow viscosity embedding epoxy resin, and they were allowed to cure prior to dissection for subsequent detailed analysis of the internal fabric. Digital imaging techniques were used to process and analyze various sections of the specimens. The analysis consisted of studying two specific fabric characteristics of the soil: particle orientation and local void ratio. Frequency distribution charts were plotted to assess the degrees of homogeneity and isotropy. Other invasive techniques were also used in some cases to assess the repeatability of the specimen preparation technique. Results indicate that the specimens were prepared with a high degree of homogeneity. Some degree of spatial variation was observed in the local void ratio evaluation.

This paper appears in Transportation Research Record No. 1526, Emerging Technologies in Geotechnical Engineering.

English

p. 121-128

1996

Transportation Research Record

0309062209

Figures (8) ; References (12) ; Tables (2)

Homogeneity; Image analysis; Image processing; Isotropy; Quantitative analysis; Sand; Specimens; Void ratios

Microfabric; Particle orientation; Specimen preparation

Geotechnology; Highways; I41: General Soil Surveys

TRIS, TRB

Dec 27 1997 12:00AM

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• EARTH PRESSURES DUE TO COMPACTION: COMPARISON OF THEORY WITH LABORATORY AND FIELD BEHAVIOR
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• IDENTIFYING FAILURE THROUGH LOCATIONS OF ACOUSTIC EMISSION
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• NEW APPROACH TO INTERPRETATION OF NONINVASIVE SURFACE WAVE MEASUREMENTS FOR SOIL PROFILING
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• RELATING FAILURE TESTS PERFORMED IN HOLLOW CYLINDER APPARATUS TO INHERENT ANISOTROPY
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