thumbnail

Graphical method for determining the coefficient of consolidation cv from a flow-pump permeability test

Geotechnical Testing Journal

By:
, , ,

Links

  • The Publications Warehouse does not have links to digital versions of this publication at this time

Abstract

A graphical method has been developed for determining the coefficient of consolidation from the transient phases of a flow-pump permeability test. The flow pump can be used to infuse fluid into or withdraw fluid from a laboratory sediment specimen at a constant volumetric rate in order to obtain data that can be used to calculate permeability using Darcy's law. Representative type-curve solutions to the associated forced-flow and pressure-decay models are derived. These curves provide the basis for graphically evaluating the permeability k, the coefficient of consolidation cv, and the coefficient of volume change mv. The curve-matching technique is easy and rapid. Values of k, cv and mv for a laterally confined kaolinite specimen were determined by this graphical method and appear to be in reasonably good agreement with numerically derived estimates (within 20%). Discrepancies between the two sets of results seem to be largely a function of data quality.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Graphical method for determining the coefficient of consolidation cv from a flow-pump permeability test
Series title:
Geotechnical Testing Journal
Volume
12
Issue:
4
Year Published:
1989
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
302
Last page:
307
Number of Pages:
6