Updated 8 Feb. 2010
Outline
The cone-pressuremeter (Withers et al. 1986) test is an in-situ testing method used to measure both the soil strength and stiffness parameters. The cone-pressuremeter device is a displacement pressuremeter device mounted above a Cone penetration test device. The pressuremeter is of the same diamater as the cone and is mounted on the penetrometer shaft behind the cone tip. The pressuremeter is inserted into ground as a part of the CPT test; the pressuremeter is then carried out by allowing a pause in the CPT. The cone-pressuremeter combines the advantanges of a conventional pressuremeter test and a CPT. The CPT probe provides a continious profile of the soil by measuing the stress on the tip, the sleeve friction and the porewater pressure (in th ecase of piezocone); and the pressuremeter allows the assessment of the soil strength and stiffness.
Reference:
Withers N.J., Schaap, L.H.J., and Dalton C.P. (1986), The development of a full displacement pressuremeter, Proc. Symp. on Pressuremeter and its MArine Applications, ASTM, SPT 950, 38-56.
Description and test procedure
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Development of the Cone Pressuremeter,1992, Houlsby, G.T. and Nutt, N.R.F., Proceedings of the Wroth Memorial Symposium, Predictive Soil Mechanics, Oxford, July 27-29, ISBN 0-7277-1916-5, pp 359-377
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Development of Automated Dilatometer and Cone Penetration Tests at the University of Adelaide, Australia, 1995, Kaggwa, W. S., Jaksa, M. B. and Jha, R. K., Proceedings of Int. Conference on Advances in Site Investigation Practice, Thomas Telford, London, (Publ. 1996), pp. 372-382
Test Standards
Publication and Technical notes
- A Study of the Cone- pressuremeter Test in Sand, Schnaid, F., 1990, PhD thesis, Oxford University
- Analysis of the Cone Pressuremeter Test in Clay, Houlsby, G.T. and Withers, N.J., 1988, Géotechnique, Vol. 38, No. 4, December, pp 575-587, ISSN 0016-8505, Awarded the inaugural Geotechnical Research Medal, Institution of Civil Engineers
- An Analytical Study of the Cone Penetrometer Test in Clay, Teh, C.I. and Houlsby, G.T., 1991, Géotechnique, Vol. 41, No. 1, January, pp 17-34, ISSN 0016-8505
- Measurement of the Properties of Sand in a Calibration Chamber by the Cone Pressuremeter Test, Schnaid, F. and Houlsby, G.T., 1992, Géotechnique, Vol. 42, No. 4, December, pp 587-601
- Interpretation of Shear Moduli from Cone-Pressuremeter Tests in Sand, Houlsby, G.T. and Schnaid, F., 1994, Géotechnique, Vol. 44, No. 1, March, pp 147-164, ISSN 0016-8505
- Calibration Tests on the Cone Pressuremeter in Carbonate Sand, Nutt, N.R.F. and Houlsby, G.T., 1991, Proceedings of the First International Conference on Calibration Testing, Potsdam, New York, June 28-29, pp 265-276
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