S. A. Jefferis Profile

Prof. S. A. Jefferis

Connections 17
Publications 68

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Current Positions

Director, Environmental Geotechnics Ltd - Environmental Geotechnics Ltd

Visiting Fellow - Department of Engineering Science, University of Oxford

Field of Practice

Geotechnical Engineer

Industry

Consulting

Expertise

Shallow Foundations Shaft Foundations Retaining Walls Mechanically Stabilized Earth (MSE) Walls Deep Excavations Contaminant Transport Remediation Technology

Material Reuse Grouting Stabilization Deep Soil Mixing Lime Stabilization Tailings Dams Levees Tunneling in Soils Jacked Tunnels Underground Structures Laboratory Testing Forensics Groundwater Pumping Offshore Geotechnics Pile Foundations

Honors & Awards

Delivered the 60th Rankine Lecture, UK BGA, 2022

Work Experience

Environmental Geotechnics Ltd : ( 01/07/1982 - Present )
- Director, Environmental Geotechnics Ltd
Department of Engineering Science, University of Oxford : ( 01/07/2004 - Present )
- Visiting Fellow

Latest Publications

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Ken Been
Journal Article published 2018 May in Géotechnique volume 68 issue 5 on pages 463 to 466
Authors: M. Jefferies, D. Reades, G. Sills, S. Jefferis
http://dx.doi.org/10.1680/jgeot.17.o.002
Polymer Support Fluids in Civil Engineering
Monograph published 2017 Jan
Authors: Carlos Lam, Stephan A. Jefferis
http://dx.doi.org/10.1680/psfce.57869
The On-Site Management of Polymer Support Fluids for the Construction of Drilled Shafts and Diaphragm Walls
Proceedings Article published 2017 Jul 6 in Grouting 2017
Authors: Stephan A. Jefferis, Yue Ouyang, Paul Wiltcher, Tony Suckling, Carlos Lam
http://dx.doi.org/10.1061/9780784480809.050
Selection of Colloidal Silica Grouts with Respect to Gelling and Erosion Behaviour
Journal Article published 2017 Feb 6 in Geosciences volume 7 issue 1 on page 6
Authors: Pingqian Shen, Nicholas Hankins, Stephan Jefferis
http://dx.doi.org/10.3390/geosciences7010006
Erratum for “Performance of Bored Piles Constructed Using Polymer Fluids: Lessons from European Experience” by Carlos Lam and Stephan A. Jefferis
Journal Article published 2016 Feb in Journal of Performance of Constructed Facilities volume 30 issue 1 on page 08215002
Authors: Carlos Lam, Stephan A. Jefferis
http://dx.doi.org/10.1061/(asce)cf.1943-5509.0000812

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Publications
Ken Been Journal Article published 2018 May in Géotechnique volume 68 issue 5 on pages 463 to 466 Authors: M. Jefferies, D. Reades, G. Sills, S. Jefferis http://dx.doi.org/10.1680/jgeot.17.o.002
Polymer Support Fluids in Civil Engineering Monograph published 2017 Jan Authors: Carlos Lam, Stephan A. Jefferis http://dx.doi.org/10.1680/psfce.57869
The On-Site Management of Polymer Support Fluids for the Construction of Drilled Shafts and Diaphragm Walls Proceedings Article published 2017 Jul 6 in Grouting 2017 Authors: Stephan A. Jefferis, Yue Ouyang, Paul Wiltcher, Tony Suckling, Carlos Lam http://dx.doi.org/10.1061/9780784480809.050
Selection of Colloidal Silica Grouts with Respect to Gelling and Erosion Behaviour Journal Article published 2017 Feb 6 in Geosciences volume 7 issue 1 on page 6 Authors: Pingqian Shen, Nicholas Hankins, Stephan Jefferis http://dx.doi.org/10.3390/geosciences7010006
Erratum for “Performance of Bored Piles Constructed Using Polymer Fluids: Lessons from European Experience” by Carlos Lam and Stephan A. Jefferis Journal Article published 2016 Feb in Journal of Performance of Constructed Facilities volume 30 issue 1 on page 08215002 Authors: Carlos Lam, Stephan A. Jefferis http://dx.doi.org/10.1061/(asce)cf.1943-5509.0000812
Ageing behaviour of polyacrylamide-based excavation fluids Journal Article published 2016 Dec in Proceedings of the Institution of Civil Engineers - Construction Materials volume 169 issue 6 on pages 301 to 307 Authors: Carlos Lam, Stephan A. Jefferis http://dx.doi.org/10.1680/coma.14.00035
Discussion: Use of viscous pore fluids in dynamic centrifuge modelling Journal Article published 2016 Sep in International Journal of Physical Modelling in Geotechnics volume 16 issue 3 on pages 97 to 100 Authors: Carlos Lam, John O. Ejezie, Stephan A. Jefferis http://dx.doi.org/10.1680/jphmg.16.00014
Performance of Bored Piles Constructed Using Polymer Fluids: Lessons from European Experience Journal Article published 2016 Apr in Journal of Performance of Constructed Facilities volume 30 issue 2 on page 04015024 Authors: Carlos Lam, Stephan A. Jefferis http://dx.doi.org/10.1061/(asce)cf.1943-5509.0000756
Martin Fuchsberger Journal Article published 2016 Oct in Géotechnique volume 66 issue 10 on pages 864 to 864 Authors: H. F. Schweiger, S. A. Jefferis http://dx.doi.org/10.1680/jgeot.16.o.001
Rheological Properties of PHPA Polymer Support Fluids Journal Article published 2015 Nov in Journal of Materials in Civil Engineering volume 27 issue 11 on page 04015021 Authors: Carlos Lam, Peter J. Martin, Stephan A. Jefferis http://dx.doi.org/10.1061/(asce)mt.1943-5533.0001252
Physical Properties of Polymer Support Fluids in Use and Their Measurement Techniques Journal Article published 2015 Apr 14 in Geotechnical Testing Journal volume 38 issue 4 on page 20140032 Authors: Carlos Lam, Stephan A. Jefferis http://dx.doi.org/10.1520/gtj20140032
Effects of polymer and bentonite support fluids on the performance of bored piles Journal Article published 2015 Dec in Soils and Foundations volume 55 issue 6 on pages 1487 to 1500 Authors: Carlos Lam, Stephan A. Jefferis, Tony P. Suckling, Viv M. Troughton http://dx.doi.org/10.1016/j.sandf.2015.10.013
Interpretation of Viscometer Test Results for Polymer Support Fluids Proceedings Article published 2014 May 5 in Tunneling and Underground Construction Authors: Carlos Lam, Stephan A. Jefferis http://dx.doi.org/10.1061/9780784413449.043
Construction techniques for bored piling in sand using polymer fluids Journal Article published 2014 Dec in Proceedings of the Institution of Civil Engineers - Geotechnical Engineering volume 167 issue 6 on pages 565 to 573 Authors: Carlos Lam, Stephan A. Jefferis, Tony P. Suckling http://dx.doi.org/10.1680/geng.13.00128
The use of polymer solutions for deep excavations: lessons from Far Eastern experience Journal Article published 2014 Oct 2 in HKIE Transactions volume 21 issue 4 on pages 262 to 271 Authors: Carlos Lam, Stephan A. Jefferis http://dx.doi.org/10.1080/1023697x.2014.970749
Some unexpected effects of natural and anthropogenic chemicals on construction Book Chapter published 2014 Jan in Bio- and Chemo-Mechanical Processes in Geotechnical Engineering on pages 99 to 104 Authors: S.A. JEFFERIS http://dx.doi.org/10.1680/bcmpge.60531.009
Effects of polymer and bentonite support fluids on concrete–sand interface shear strength Journal Article published 2014 Jan in Géotechnique volume 64 issue 1 on pages 28 to 39 Authors: C. LAM, S.A. JEFFERIS, C.M. MARTIN http://dx.doi.org/10.1680/geot.13.p.012
Determination of Residual Concentration of Active Polymer in a Polymeric Support Fluid Journal Article published 2013 Nov 11 in Geotechnical Testing Journal volume 37 issue 1 on page 20130019 Authors: Carlos Lam, Peter J. Martin, Stephan A. Jefferis, K. Gifford Goodhue http://dx.doi.org/10.1520/gtj20130019
Some unexpected effects of natural and anthropogenic chemicals on construction Journal Article published 2013 Mar in Géotechnique volume 63 issue 3 on pages 256 to 261 Authors: S.A. JEFFERIS http://dx.doi.org/10.1680/geot.sip13.p.029
Permeability of aged grout around tunnels in London Journal Article published 2013 Jun in Géotechnique volume 63 issue 8 on pages 651 to 660 Authors: R.G. LAVER, K. SOGA, P. WRIGHT, S. JEFFERIS http://dx.doi.org/10.1680/geot.11.p.125
Soil conditioning laboratory trials for the Port of Miami Tunnel, Miami, Florida, USA Book Chapter published 2013 May 13 in Underground. The Way to the Future on pages 1328 to 1335 Authors: A Merritt, S Jefferis, R Storry, L Brais http://dx.doi.org/10.1201/b14769-182
Exploiting physico-chemical modification of soils in closed face tunnelling Book Chapter published 2013 May 24 in Coupled Phenomena in Environmental Geotechnics on pages 557 to 564 Authors: S Jefferis, A Merritt http://dx.doi.org/10.1201/b15004-73
Cement-Bentonite Slurry Systems Proceedings Article published 2012 Aug 17 in Grouting and Deep Mixing 2012 Authors: Stephan Jefferis http://dx.doi.org/10.1061/9780784412350.0001
Mine Paste Backfill–The Behaviour of Thickened Tailings and Pipeline Design Proceedings Article published 2012 Mar 29 in GeoCongress 2012 Authors: Tamás Meggyes, Stephan A. Jefferis http://dx.doi.org/10.1061/9780784412121.423
Mine Paste Backfill - The Use of Grouts at Massive Scale Proceedings Article published 2012 Aug 17 in Grouting and Deep Mixing 2012 Authors: Stephan Jefferis, Stephen Wilson http://dx.doi.org/10.1061/9780784412350.0163
Hydraulic Characteristics of Bentonite Cake Fabricated on Cutoff Walls Journal Article published 2012 Dec 1 in Clays and Clay Minerals volume 60 issue 6 on pages 557 to 560 Authors: Stephan A. Jefferis, Carlos Lam http://dx.doi.org/10.1346/ccmn.2012.0600601
Corrigendum: Critical assessment of pile modulus determination methods Journal Article published 2012 May in Canadian Geotechnical Journal volume 49 issue 5 on pages 630 to 630 Authors: Carlos Lam, Stephan A. Jefferis http://dx.doi.org/10.1139/t2012-031
Discussion of “Distribution of residual load and true shaft resistance for a driven instrumented test pile”1Appears in the Canadian Geotechnical Journal, 48(4): 583–598 [doi: 10.1139/t10-084]. Journal Article published 2012 Feb in Canadian Geotechnical Journal volume 49 issue 2 on pages 244 to 245 Authors: Carlos Lam, Stephan A. Jefferis http://dx.doi.org/10.1139/t11-108
Reply to the discussion by Fellenius on “Critical assessment of pile modulus determination methods”1Appears in the Canadian Geotechnical Journal, 49(5): 614–621 [doi: 10.1139/t2012-027]. Journal Article published 2012 May in Canadian Geotechnical Journal volume 49 issue 5 on pages 622 to 629 Authors: Carlos Lam, Stephan A. Jefferis http://dx.doi.org/10.1139/t2012-030
Critical assessment of pile modulus determination methods Journal Article published 2011 Oct in Canadian Geotechnical Journal volume 48 issue 10 on pages 1433 to 1448 Authors: Carlos Lam, Stephan A. Jefferis http://dx.doi.org/10.1139/t11-050
Discussion of “Addressing Sulfate-Induced Heave in Lime Treated Soils” by Dallas N. Little, Syam Nair, and Bruce Herbert Journal Article published 2011 Aug in Journal of Geotechnical and Geoenvironmental Engineering volume 137 issue 8 on pages 813 to 814 Authors: Stephan A. Jefferis http://dx.doi.org/10.1061/(asce)gt.1943-5606.0000417
Contaminated Land and Environmental Damage: an Analysis of Current Remedial Strategies and Future Developments Book Chapter published 2010 in Advances in Environmental Geotechnics on pages 236 to 247 Authors: Stephan A. Jefferis http://dx.doi.org/10.1007/978-3-642-04460-1_16
Observations on Viscosity Reduction of PHPA Polymer Support Fluids Proceedings Article published 2010 May 14 in Deep Foundations and Geotechnical In Situ Testing Authors: Carlos Lam, Stephan A. Jefferis, K. Gifford Goodhue, Jr. http://dx.doi.org/10.1061/41106(379)23
Evaluation of Methodologies for Exposure Assessment to Atmospheric Pollutants from a Landfill Site Journal Article published 2009 Apr in Journal of the Air & Waste Management Association volume 59 issue 4 on pages 490 to 501 Authors: Richard Mohan, Giovanni S. Leonardi, Alan Robins, Stephan Jefferis, Joanne Coy, Jeremy Wight, Virginia Murray http://dx.doi.org/10.3155/1047-3289.59.4.490
Moving Towards Sustainability in Geotechnical Engineering Proceedings Article published 2008 Mar 7 in GeoCongress 2008 Authors: Stephan A. Jefferis http://dx.doi.org/10.1061/40971(310)105
Reactive Transport in Cut-Off Walls and Implications for Wall Durability Proceedings Article published 2008 Mar 7 in GeoCongress 2008 Authors: Stephan A. Jefferis http://dx.doi.org/10.1061/40970(309)82
Book reviewBasic environmental and engineering geology. BellF. G.. Dunbeath: Whittles Publishing and CRC Press, 2007. 352 pp. 978-1904445-02-9. £65 Journal Article published 2008 Sep in Géotechnique volume 58 issue 7 on pages 612 to 612 Authors: S. Jefferis http://dx.doi.org/10.1680/geot.2008.58.7.612
Contributions toGéotechnique1948–2008: Soil science and interdisciplinary aspects of geotechnical engineering Journal Article published 2008 Jun in Géotechnique volume 58 issue 5 on pages 441 to 448 Authors: K. Soga, S. A. Jefferis http://dx.doi.org/10.1680/geot.2008.58.5.441
Investigation of the effects and degree of calcium exchange on the Atterberg limits and swelling of geosynthetic clay liners when subjected to wet–dry cycles Journal Article published 2007 Jun in Geotextiles and Geomembranes volume 25 issue 3 on pages 170 to 185 Authors: Abdelmalek Bouazza, Stephan Jefferis, Thaveesak Vangpaisal http://dx.doi.org/10.1016/j.geotexmem.2006.11.001
Development and application of knowledge-based source-term models for radionuclide mobilisation from contaminated concrete Journal Article published 2006 Jan in MRS Proceedings volume 932 Authors: Guido Deissmann, Adrian Bath, Stephan Jefferis, Stefan Thierfeldt, Stefan Wörlen http://dx.doi.org/10.1557/proc-932-99.1
Effect of Wet–Dry Cycles and Cation Exchange on Gas Permeability of Geosynthetic Clay Liners Journal Article published 2006 Aug in Journal of Geotechnical and Geoenvironmental Engineering volume 132 issue 8 on pages 1011 to 1018 Authors: Abdelmalek Bouazza, Thaveesak Vangpaisal, Stephan Jefferis http://dx.doi.org/10.1061/(asce)1090-0241(2006)132:8(1011)
Sustainable waste management in the UK: the public health role Journal Article published 2006 Oct in Public Health volume 120 issue 10 on pages 908 to 914 Authors: R. Mohan, J. Spiby, G.S. Leonardi, A. Robins, S. Jefferis http://dx.doi.org/10.1016/j.puhe.2006.05.021
Urban land: degradation, investigation, remediation. D. D. Genske reviewed by S. A. Jefferis Journal Article published 2005 May in Géotechnique volume 55 issue 4 on pages 341 to 341 Authors: S. A. Jefferis http://dx.doi.org/10.1680/geot.55.4.341.65483
Book reviewUrban land: degradation, investigation, remediation. GenskeD. D.. Springer Verlag, 2003. 333 pp. 3 540 43845 9. £70/€99·95 Journal Article published 2005 May in Géotechnique volume 55 issue 4 on pages 341 to 341 Authors: S. A. Jefferis http://dx.doi.org/10.1680/geot.2005.55.4.341
Long Term Performance of Grouts and the Effects of Grout By-Products Proceedings Article published 2003 Jan 29 in Grouting and Ground Treatment Authors: Stephan A. Jefferis http://dx.doi.org/10.1061/40663(2003)63
Radioactive Contamination of Concrete: Uptake and Release of Radionuclides Proceedings Article published 2003 in 9th ASME International Conference on Radioactive Waste Management and Environmental Remediation: Volumes 1, 2, and 3 Authors: Adrian Bath, Guido Deissmann, Stephan Jefferis http://dx.doi.org/10.1115/icem2003-4814
Grouts and grouting Book Chapter published 2003 in Advanced Concrete Technology on pages 1 to 47 Authors: S.A. Jefferis http://dx.doi.org/10.1016/b978-075065686-3/50298-6
Hydraulic properties of geosynthetic clay liners Book Chapter published 2003 Jan in Geosynthetics: Protecting the Environment on pages 33 to 49 Authors: S. A. Jefferis, D. R. V. Jones http://dx.doi.org/10.1680/gpte.32347.0002
Release behaviour of radionuclides from contaminated concrete materials Book Chapter published 2002 in Uranium in the Aquatic Environment on pages 189 to 196 Authors: Guido Deissmann, Stefan Thierfeldt, Adrian Bath, Stephan Jefferis http://dx.doi.org/10.1007/978-3-642-55668-5_22
4. Engineering design of reactive treatment zones and potential monitoring problems Book Chapter published 2002 Jan in Advanced groundwater remediation: Active and passive technologies on pages 75 to 86 Authors: Stephan Jefferis http://dx.doi.org/10.1680/agr.31210.0004
Probabilistic Human Health Risk Assessment for Contaminant Exposures Book Chapter published 1995 in Soil & Environment on pages 623 to 624 Authors: Michael Jefferies, Robert C. Lee, Reidar Zapf-Gilje, Glyn Fox, Bruce J. Kelman, Stephan A. Jefferis http://dx.doi.org/10.1007/978-94-011-0415-9_170
Water-soluble polymers in tunnelling and slurry supported excavations Book Chapter published 1995 in Cellulose and Cellulose Derivatives on pages 463 to 470 Authors: S A Jefferis http://dx.doi.org/10.1533/9781845698539.5.463
A UK National Specification for Slurry Trench Cut-Off Walls as Barriers to Pollution Migration Book Chapter published 1995 in Contaminated Soil ’95 on pages 1259 to 1260 Authors: S. A. Jefferis, G. Doe, S. M. Herbert http://dx.doi.org/10.1007/978-94-011-0421-0_102
Investigation of syneresis in silicate-aluminate grouts Journal Article published 1995 Mar in Géotechnique volume 45 issue 1 on pages 131 to 140 Authors: S. A. Jefferis, A. Sheikh Bahai http://dx.doi.org/10.1680/geot.1995.45.1.131
Report on Session 7: Grouting concepts and materials Book Chapter published 1994 Jan in Grouting in the ground on pages 649 to 658 Authors: Stephan A. Jefferis http://dx.doi.org/10.1680/gitg.19287.0043
Prediction of the strength of chemically grouted sand Book Chapter published 1994 Jan in Grouting in the ground on pages 53 to 70 Authors: A. Sheikh Bahai, S. A. Jefferis http://dx.doi.org/10.1680/gitg.19287.0005
Design and Performance of Vertical Barriers to Pollution Migration Book Chapter published 1993 in Soil & Environment on pages 507 to 508 Authors: Stephan A. Jefferis http://dx.doi.org/10.1007/978-94-011-2018-0_82
The grouting of prestressing ducts Book Chapter published 1993 Nov in Structural Grouts Authors: S Jefferis http://dx.doi.org/10.4324/9780203487785.ch10
Fresh properties of Portland cement grouts Book Chapter published 1993 Nov in Structural Grouts Authors: S Jefferis http://dx.doi.org/10.4324/9780203487785.ch2
Influence of microstructure on firing colour of clays Journal Article published 1992 Jan in Applied Clay Science volume 6 issue 4 on pages 319 to 342 Authors: Ewa T. Stępkowska, Stephan A. Jefferis http://dx.doi.org/10.1016/s0169-1317(09)90007-2
INFORMAL DISCUSSION. GROUND CONDITIONS AT ABBEYSTEAD. Journal Article published 1990 Aug in Proceedings of the Institution of Civil Engineers volume 88 issue 4 on pages 721 to 725 Authors: A MUIRWOOD, S A JEFFERIS http://dx.doi.org/10.1680/iicep.1990.32719
The Divided Flow Permeameter Journal Article published 1988 Jan in MRS Proceedings volume 137 Authors: Stephan A. Jefferis, Raman J. Mangabhai http://dx.doi.org/10.1557/proc-137-209
Possibility of feldspar formation in bentonite suspensions during storage, drying and/or heating Journal Article published 1988 Oct in Thermochimica Acta volume 135 on pages 319 to 334 Authors: E.T. Stepkowska, J.L. Perez-Rodriguez, A. Justo, P.J.Sanchez Soto, S.A. Jefferis http://dx.doi.org/10.1016/0040-6031(88)87404-5
Variability in water sorption and in thermogravimetry of bentonite Journal Article published 1987 Apr in Thermochimica Acta volume 114 issue 1 on pages 179 to 186 Authors: E.T. Stȩpkowska, S.A. Jefferis http://dx.doi.org/10.1016/0040-6031(87)80258-7
ASSESSENT OF DYNMIC BEHAVIOUR OF BRITTLE MATERIALS Book Chapter published 1983 in TEQC83 on pages 252 to 263 Authors: V. Agopyan, S.A. Jefferis http://dx.doi.org/10.1016/b978-0-408-22162-7.50029-4
PUMPING OF CEMENT GROUTS Book Chapter published in Rheology of Fresh Cement and Concrete on pages 192 to 200 Authors: S A JEFFERIS http://dx.doi.org/10.4324/9780203473290_chapter_20
DISCUSSION CONTRIBUTION ON MUSZYNSKI AND MIERZWA (page 201) Book Chapter published in Rheology of Fresh Cement and Concrete Authors: S A JEFFERIS http://dx.doi.org/10.4324/9780203473290_discussion_contribution_on_muszynski_and_mierzwa
DISCUSSION CONTRIBUTIONS ON KEATING AND HANNANT (page 137) Book Chapter published in Rheology of Fresh Cement and Concrete Authors: C LEGRAND, S A JEFFERIS http://dx.doi.org/10.4324/9780203473290_discussion_contributions_on_keating_and_hannant

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