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Abstract

The triaxial test is an important and firmly established laboratory procedure for obtaining design parameters from soil samples. The basic test has not changed in principle since the 1950s, although significant advances have been made in the equipment used.

The advent of microcomputers has made it possible to provide an automated control system at reasonable cost. This in turn provides the ability to carry out more complex tests in which several different conditions are varied simultaneously. With this equipment, stress path testing – a procedure gaining increasing prominence in geotechnical engineering – is readily available for research and practice.

This paper describes a triaxial stress path control system which has been developed at The City University over the last 4 years. The design criteria include measurement, motor control, feedback, data storage/handling, and long and short term reliability. The control system hardware and software for both single and multiple test cell configurations are described. A modular strategy has been selected for the software to enable convenient adaptation to different interfaces, test requirements etc.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 2/3 PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON CIVIL AND STRUCTURAL ENGINEERING COMPUTING Edited by: B.H.V. Topping Paper XXVIII.2 An Application of Microcomputers to the Laboratory Testing of Soils D.B. Clinton and R.I. Woods Geotechnical Engineering Research Centre, Department of Civil Engineering, The City University, London doi:10.4203/ccp.2.28.2 purchase the full-text of this paper Full Bibliographic Reference for this paper D.B. Clinton, R.I. Woods, "An Application of Microcomputers to the Laboratory Testing of Soils", in B.H.V. Topping, (Editor), "Proceedings of the Second International Conference on Civil and Structural Engineering Computing", Civil-Comp Press, Edinburgh, UK, pp 349-352, 1985. doi:10.4203/ccp.2.28.2 Abstract The triaxial test is an important and firmly established laboratory procedure for obtaining design parameters from soil samples. The basic test has not changed in principle since the 1950s, although significant advances have been made in the equipment used. The advent of microcomputers has made it possible to provide an automated control system at reasonable cost. This in turn provides the ability to carry out more complex tests in which several different conditions are varied simultaneously. With this equipment, stress path testing – a procedure gaining increasing prominence in geotechnical engineering – is readily available for research and practice. This paper describes a triaxial stress path control system which has been developed at The City University over the last 4 years. The design criteria include measurement, motor control, feedback, data storage/handling, and long and short term reliability. The control system hardware and software for both single and multiple test cell configurations are described. A modular strategy has been selected for the software to enable convenient adaptation to different interfaces, test requirements etc. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £90 +P&P)
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