COMPUTER-CONTROLLED TRIAXIAL SOIL TESTING EQUIPMENT IN A COMMERCIAL LABORATORY
The GDS triaxial system described in this article comprises: (1) three digital pressure/volume controllers, which under computer control can apply a specified pressure or enforce a desired volume change; (2) a hydraulic triaxial cell after Bishop & Wesley, which differs from a conventional cell in that the axial load as well as the cell pressure is applied hydraulically; (3) an hp85 microcomputer (incorporating a tape cartridge drive, a small graphics screen and a printer) and a flat-bed plotter. The test control and logging are performed by the hp85 using basic programs. The test procedures that can be carried out are: (a) unconsolidated undrained; (b) consolidated undrained, with pore pressure measurement; (c) drained, with volume change measurement; (d) consolidation and swelling with no lateral strain; (e) a series of up to 9 stress paths, each being either drained or undrained; (f) cyclic loading under constant radial stress, either drained or undrained; (g) cyclic loading with no lateral strain. Three cases of typical uses are described. Mention is made of the advantages and disadvantages of the system. (TRRL)
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/00174653
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Corporate Authors:
Foundation Publications Limited
7 Ongar Road
Brentwood CM15 9AU, Essex, England -
Authors:
- Coatsworth, A M
- HOBBS, N B
- Publication Date: 1984-10
Media Info
- Features: Figures; References; Tables;
- Pagination: p. 19-23
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Serial:
- GROUND ENGINEERING
- Volume: 17
- Issue Number: 7
- Publisher: EMAP CONSTRUCT LIMITED
- ISSN: 0017-4653
Subject/Index Terms
- TRT Terms: Consolidation; Consolidations; Control systems; Digital computers; Drainage; Equipment; Laboratories; Laboratory tests; Loads; Microcomputers; Pore water pressures; Pressure; Repeated loads; Saturated soils; Soil stabilization; Soil tests; Soils; Stresses; Swelling; Swelling soils; Testing equipment; Tests; Triaxial shear tests; Unconsolidated soils; Volume; Volume changes
- Uncontrolled Terms: Micro; Undrained conditions; Undrained soils
- Old TRIS Terms: Digital systems; Stress path
- ITRD Terms: 5791: Consolidation (soil); 8673: Digital computer; 2937: Drainage; 3674: Equipment; 6237: Laboratory (not an organization); 5567: Load; 9045: Micro; 5762: Pore water pressure; 5412: Pressure; 5588: Repetitive loading; 4156: Soil; 5575: Stress (in material); 5203: Swelling (soil); 6255: Test; 5566: Triaxial; 5782: Undrained soil; 6468: Volume
- Subject Areas: Geotechnology; Highways; Hydraulics and Hydrology;
Filing Info
- Accession Number: 00393299
- Record Type: Publication
- Source Agency: Transport Research Laboratory
- Files: ITRD, TRIS
- Created Date: Jun 30 1985 12:00AM