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Volume-controlled hydrologic property measurements in triaxial systems

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Abstract

New capabilities for hydrologic property measurements in triaxial systems include: (1) volume-controlled and simultaneous measurements of hydraulic conductivity and one-dimensional consolidation (or specific storage) of a saturated test specimen; and (2) volume-controlled measurements of hydraulic conductivity, matric potential, and the variation of these properties with the moisture content of an unsaturated test specimen. Data on saturated kaolinite demonstrate simultaneous hydraulic-conductivity and one-dimensional consolidation tests with continuous monitoring of both vertical and horizontal effective stresses. Data on well-graded silty sand demonstrate the feasibility of concurrent constant-flow hydraulic conductivity and mattic potential measurements, and the variation of these properties with moisture content, for undisturbed and unsaturated specimens mounted in triaxial cells. Refinements needed to realize the full potential of these capabilities include a more rigid triaxial cell to minimize compliance, and an improved technique for measuring hydraulic-head differences within an unsaturated test specimen.

Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
Volume-controlled hydrologic property measurements in triaxial systems
Issue:
1142
Year Published:
1994
Language:
English
Publisher:
ASTM
Publisher location:
Philadelphia, PA, United States
Larger Work Title:
ASTM Special Technical Publication
First page:
482
Last page:
504
Number of Pages:
23
Conference Title:
Proceedings of tbe Symposium on Hydraulic Conductivity and Waste Contaminant Transport in Soil
Conference Location:
San Antonio, TX, USA
Conference Date:
21 January 1993 through 22 January 1993