Journal Published Online: 15 June 2010
Volume 33, Issue 4

Modified Null Pressure Plate Apparatus for Measurement of Matric Suction

CODEN: GTJODJ

Abstract

The null pressure plate apparatus is conventionally used in the measurement of matric suction of fine-grained unsaturated soil specimens applying the axis-translation technique. This apparatus is typically used to measure the matric suction in the range of 50–500 kPa in a laboratory environment. This paper provides design and construction details of the modifications and improvements to the conventionally used null pressure plate apparatus to promote the accuracy and repeatability of matric suction measurements. Several test results of matric suction measurements on compacted Indian Head till specimens over a suction range of 30–300 kPa are reported using both the modified null pressure plate and the contact filter paper technique. The results indicate that there is a good comparison between these two techniques on identically prepared specimens.

Author Information

Power, Kenton
Jacques Whitford, Ontario, Ottawa, Canada
Vanapalli, Sai
Univ. of Ottawa, Ontario, Ottawa, Canada
Pages: 7
Price: $25.00
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Stock #: GTJ102478
ISSN: 0149-6115
DOI: 10.1520/GTJ102478