SYMPOSIA PAPER Published: 01 January 1981
STP28751S

A New Control System for Soils Testing

Source

In load-deformation testing of soils it is generally necessary to supply both fluid pressures and direct loads (forces) on the sample boundaries. In addition, soils are tested under both controlled load and controlled deformation. Often three separate systems exist in a standard soils laboratory: gear driven presses, dead load hangers, and a regulated fluid pressure system. This paper describes a control system that employs commercially available rolling diaphragm cylinders and micro-flow needle control valves to supply simple and economical control for soils testing.

Author Information

Mitchell, RJ
Queen's University, Kingston, Ont.
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Details
Developed by Committee: D18
Pages: 180–190
DOI: 10.1520/STP28751S
ISBN-EB: 978-0-8031-4806-2
ISBN-13: 978-0-8031-0789-2