Journal Published Online: 01 September 2012
Volume 35, Issue 6

Performance and Suitability of Radial Drainage Materials in Axisymmetric Testing of Clayey Soils at High Confining Pressures

CODEN: GTJODJ

Abstract

When lubricated end platens are used in axisymmetric testing of clayey soil specimens, radial or side drainage is often used. As confining pressure increases, the filter paper rapidly loses its flow capacity. An experimental study of different radial drainage materials in compression and extension is presented examining their flow capacity and vertical load corrections at confining pressures ranging from low stresses to approximately 3000 kPa. Drainage materials investigated include filter paper and various non-woven geo-textiles. At high pressures, flow capacity was greatly limited by clogging, thereby limiting the allowable strain rate for drained tests. The vertical load carrying capacity of drainage materials in different configurations (vertical strips or sheets with inclined slots) was determined to be much higher than expected, even for filter paper.

Author Information

Yamamuro, Jerry
School of Civil and Construction Engineering, Oregon State Univ., Corvallis, OR, US
Liu, Yigang
Gannett Fleming, Inc., Audubon, PA, US
Lade, Poul
Dept. of Civil Engineering, The Catholic Univ. of America, Washington, D.C., US
Pages: 10
Price: $25.00
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Details
Stock #: GTJ20120069
ISSN: 0149-6115
DOI: 10.1520/GTJ20120069