Staff profile

David Toll is a Professor in the Department of Engineering and Co-Director of the Institute of Hazard, Risk and Resilience at Durham University, UK. He also has the following roles:

• Chair, British Geotechnical Association
• Chair of Technical Committee TC106 on Unsaturated Soils of the International Society of Soil Mechanics and Geotechnical Engineering (ISSMGE) (2014-2022)
• Chair, Joint Technical Committee JTC2 of the Federation of International Geo-Engineering Societies (representing ISRM, ISSMGE, IAEG and IGS) (2005-2017)
• Kwang-Hua Chair Professor at Tongji University, China
• Chair, Institution of Civil Engineers North East (2013-14)
• Chair, Northern Geotechnical Group (the regional group of the British Geotechnical Association and part of ICE North East) (2009-2014)

David Toll's research encompasses two highly relevant areas of civil engineering: (i) the engineering behaviour of unsaturated and tropical soils and (ii) the application of information technology to geotechnical engineering. The primary focus for his work on unsaturated soils is to find engineering solutions for natural hazards, particularly landslides. Much of his current work examines the impacts of climate change on transportation infrastructure through field and laboratory studies and numerical modelling. His research in information technology involves work on data exchange and standards, BIM, data acquisition and computer control systems.

He was Chair of the Scientific Committee for the European Conference on Soil Mechanics and Geotechnical Engineering held in Edinburgh in 2015. He has been a member of the organising/technical committee for many international conferences on unsaturated soils: Singapore, 2000; Recife, 2002; Weimar, 2003; Trento, 2005; Nanjing, 2007; Barcelona, 2010; Pattaya, 2011; Naples 2012; Sydney 2014; Lisbon 2020 and organised the First European Conference on Unsaturated Soils in Durham, 2008. He also organises the conference series on Information Technology in Geo-Engineering with conferences in Shanghai in 2010 and Durham in 2014.

He has twice been a member of the editorial advisory board of Geotechnique and been member of the Editorial Panels for two Geotechnique Symposia in Print (2011 and 2013). He was the founding editor for the international journal, Geotechnical and Geological Engineering, published by Springer, and remains a member of the editorial board. He is a member of the editorial board of Transportation Geotechnics and has been for the Quarterly Journal for Engineering Geology and Hydrogeology. 

He is Director of the Sustainable Infrastructure Research Challenge for the Department of Engineering. He has been Director of Education, Design Coordinator, Accreditation Coordinator and International Coordinator for the School of Engineering and Computing Sciences. He teaches Geotechnical Engineering and Mechanics on the undergraduate MEng course in Engineering.

• geotechnical engineering
• engineering geology
• information technology

Chapter in book

• Toll, D. Tropical Soils. In J. Burland, T. Chapman, H. Skinner, & M. Brown (Eds.), ICE Manual of Geotechnical Engineering (341-361). Institution of Civil Engineers
• Pradhan, S., Toll, D., Rosser, N., & Brain, M. (2020). Field monitoring of soil-moisture to understand the hydrological response of a road-cut slope. In R. Cardoso, C. Jommi, & E. Romero (Eds.), 4th European Conference on Unsaturated Soils (E-UNSAT 2020). EDP Sciences. https://doi.org/10.1051/e3sconf/202019501029
• Toll, D. (2012). The Behaviour of Unsaturated Soil. In B. Huat, D. Toll, & A. Prasad (Eds.), A Handbook of Tropical Residual Soil Engineering (117-145). Taylor and Francis. https://doi.org/10.1201/b12302-9
• Toll, D., Mendes, J., Gallipoli, D., Glendinning, S., & Hughes, P. (2012). Investigating the impacts of climate change on slopes: field measurements. In T. Radford (Ed.), EARTHWORKS IN EUROPE (151-161). https://doi.org/10.1144/egsp26.17

Conference Paper

• Mendes, J., & Toll, D. (2013, December). Influence of initial water content on the water retention behaviour of a sandy clay soil. Presented at 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris
• Toll, D., Asquith, J., Fraser, A., Hassan, A., Liu, G., Lourenço, S., Mendes, J., Noguchi, T., Osinski, P., & Stirling, R. (2015, December). Tensiometer techniques for determining soil water retention curves. Presented at 6th Asia-Pacific Conference on Unsaturated Soil, Guilin, China
• Hassan, A., & Toll, D. (2015, December). Water content characteristics of mechanically compacted clay soil determined using the electrical resistivity method. Presented at XVI European Conference on Soil Mechanics and Geotechnical Engineering, Edinburgh
• Winter, M., Smith, D., Eldred, P., & Toll, D. (2015, December). Introduction to the XVI European Conference on Soil Mechanics and Geotechnical Engineering: Geotechnical Engineering for Infrastructure and Development. Presented at XVI European Conference on Soil Mechanics and Geotechnical Engineering, Edinburgh
• Toll, D., Hassan, A., King, J., & Asquith, J. (2013, December). New devices for water content measurement. Presented at 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris
• Hassan, A., & Toll, D. (2013, December). Electrical Resistivity Tomography for Characterizing Cracking of Soils. Presented at Geo-Congress 2013 Stability and Performance of Slopes and Embankments III, San Diego, California
• Md. Rahim, M., & Toll, D. (2014, December). Fully Coupled Flow-Deformation Analyses of Infiltration and Matric Suctions within a Tropical Soil Slope. Presented at 6th International Conference on Unsaturated Soils, Sydney
• Toll, D., & O’Dea, J. (2014, December). An XML data format for geotechnical data: AGSML4. Presented at 2nd International Conference on Information Technology in Geo-Engineering, Durham
• Bland, J., Walthall, S., & Toll, D. (2014, December). The Development and Governance of the AGS Format for Geotechnical Data. Presented at 2nd International Conference on Information Technology in Geo-Engineering, Durham
• Hughes, D., Karim, M., Briggs, K., Glendinning, S., Toll, D., Dijkstra, T., Powrie, W., & Dixon, N. (2015, December). A Comparison of numerical modelling techniques to predict the effect of climate on infrastructure slopes. Presented at XVI European Conference on Soil Mechanics and Geotechnical Engineering, Edinburgh
• Robson, E., Pradhan, S., & Toll, D. (2023, March). A Field Study on the Stability of Road Cut Slopes in Nepal. Presented at Geo-Resilience 2023, Cardiff University
• Kumar, A., Azizi, A., & Toll, D. (2022, March). The Influence of Cyclic Loading Frequency on the Response of an Unsaturated Railway Formation Soil. Presented at Geo-Congress 2022, Charlotte, North Carolina, USA
• Mendes, J., Gallipoli, D., Toll, D., & Tarantino, A. (2017, November). First Saturation and Resaturation of High Capacity Tensiometers with 1.5 MPa High Air Entry Value (HAEV) Ceramic Filters. Presented at Second Pan-American Conference on Unsaturated Soils, Dallas, Texas, USA
• Tinoco, J., Gomes Correia, A., Cortez, P., & Toll, D. (2017, September). Data-driven Classification Approaches for Stability Condition Prediction of Soil Cutting Slopes. Presented at 19th Int. Conf. on Soil Mechanics and Geotechnical Engineering, Seoul, Korea
• Stirling, S., Helm, P., Glendinning, S., Asquith, J., Hughes, P., & Toll, D. (2017, September). Deterioration of geotechnical infrastructure: the influence of asset aging through environmental cycling. Presented at 19th Int. Conf. on Soil Mechanics and Geotechnical Engineering, Seoul, Korea
• Toll, D., Hughes, P., & Asquith, J. (2016, September). Soil water retention behaviour for an instrumented embankment. Presented at 3rd European Conference on Unsaturated Soils, Paris, France
• Beckett, C., Fourie, A., & Toll, D. (2016, September). Water repellent soils: the case for unsaturated soil mechanics. Presented at 3rd European Conference on Unsaturated Soils, Paris, France
• Osinski, P., Toll, D., & Koda, E. (2016, September). Comparison of Soil Water Retention Curves for sandy clay, obtained using different laboratory testing methods. Presented at 3rd European Conference on Unsaturated Soils, Paris, France
• Toll, D., Asquith, J., Hughes, P., & Osinski, P. (2016, September). Soil Water Retention Behaviour of a Sandy Clay Fill Material. Presented at 3rd International Conference on Transportation Geotechnics, Guimarães, Portugal
• Kerr, H., Johnson, K., Toll, D. G., & Mansfield, F. (2016, August). Flood Holding Capacity: A Novel Concept to Evaluate the Resilience of Amended Soils. Presented at Geo-Chicago 2016, Chicago, Illinois, USA
• Wang, Y., Sheng, D., Ross, K., & Toll, D. G. (2016, September). Modelling of the water retention characteristic of deformable soils. Presented at 3rd European Conference on Unsaturated Soils, Paris
• Glendinning, S., Helm, P., Rouainia, M., Stirling, R., Asquith, J., Hughes, P., Toll, D., Clarke, D., Powrie, W., Smethurst, J., Hughes, D., Harley, R., Karim, R., Dixon, N., Crosby, C., Chambers, J., Dijkstra, T., Gunn, D., Briggs, K., & Muddle, D. (2015, December). Research-informed design, management and maintenance of infrastructure slopes: development of a multi-scalar approach. Presented at International Symposium on Geohazards and Geomechanics (ISGG2015), Warwick
• Murray, E., Toll, D., & Sivakumar, V. (2014, July). Interpretation of stresses and strains in unsaturated fine-grained soils. Presented at 6th International Conference on Unsaturated Soils, Sydney, Australia
• Toll, D., Rahim, M. M., Karthikeyan, M., & Tsaparas, I. (2014, September). Soil atmosphere interactions for analysing slopes in tropical soils. Presented at The 14th International Conference of the International Association for Computer Methods and Advances in Geomechanics, Kyoto, Japan
• Asquith, J., & Toll, D. (2014, July). Data Acquisition Software for Controlling Serial Ports with Cloud Data Storage. Presented at 2nd International Conference on Information Technology in Geo-Engineering, Durham, UK
• Hassan, A., & Toll, D. (2014, July). Investigation of the directional dependence of soil resistivity in cracking clays. Presented at 6th International Conference on Unsaturated Soils, Sydney, Australia
• Toll, D., & Hassan, A. (2014, July). Data Acquisition and Control Software for Automated Resistivity Measurements. Presented at 2nd International Conference on Information Technology in Geo-Engineering, Durham, UK
• Mendes, J., Toll, D., & Evans, F. (2012, December). A Double Cell Triaxial System for Unsaturated Soils Testing. Presented at 2nd European Conference on Unsaturated Soils, Naples, Italy
• Asquith, J., Toll, D., & Johnson, K. (2012, December). Design and Construction of Large Lysimeters for Monitoring Unsaturated Transport of Contaminants. Presented at 2nd European Conference on Unsaturated Soils, Naples, Italy
• Hossain, A., & Toll, D. (2012, December). Geotechnical Behaviour of Unsaturated Tropical Clay Soils of Dhaka, Bangladesh. Presented at 2nd European Conference on Unsaturated Soils, Naples, Italy
• Lourenço, S. D. N., Gallipoli, D., Toll, D. G., Augarde, C. E., & Evans, F. D. (2011, September). Advances in tensiometer-based suction control systems. Presented at 5th International Conference on Unsaturated Soils, Barcelona, Spain
• Javadi, A., Johari, A., Ahangar-Asr, A., Faramarzi, A., Toll, D., & Khalili, N. (2009, September). Prediction of the behaviour of unsaturated soils using evolutionary polynomial regression: An incremental approach. Presented at 5th International Conference on Unsaturated Soils, Barcelona, Spain
• Toll, D., & Ali Rahman, Z. (2010, April). Engineering Behaviour of Unsaturated Structured Soils. Presented at 3rd International Conference on Problematic Soils, Adelaide, Australia
• Javadi, A., Johari, A., Ahangar-Asr, A., Faramarzi, A., & Toll, D. (2010, December). A New Approach to Constitutive Modelling of Unsaturated Soils Using Evolutionary Polynomial Regression. Presented at 4th Asia-Pacific Conference on Unsaturated Soils, Newcastle, Australia
• Toll, D., Gallipoli, D., Augarde, C., De Gennaro, V., Mancuso, C., Tarantino, A., Vaunat, J., & Wheeler, S. (2010, December). The MUSE Network: Research Outcomes. Presented at 4th Asia-Pacific Conference on Unsaturated Soils, Newcastle, Australia
• Toll, D. (2009, December). International Data Standards for Geotechnical Engineering. Presented at 17th International Conference on Soil Mechanics and Geotechnical Engineering, Alexandria, Egypt
• Javadi, A., Johari, A., Ahangar-Asr, A., Faramarzi, A., & Toll, D. (2009, December). Using Evolutionary Polynomial Regression in Modelling of Unsaturated Soils. Presented at 17th. Conference on Computational Mechanics (ACME-UK), Nottingham, UK
• Toll, D. (2009, December). Management of Geotechnical Data and Processes. Presented at 17th International Conference on Soil Mechanics and Geotechnical Engineering, Alexandria, Egypt
• Lourenço, S. D. N., Toll, D. G., Augarde, C. E., Gallipoli, D., Congreve, A., Smart, T., & Evans, F. (2008, July). Observations of unsaturated soils by Environmental Scanning Electron Microscopy in dynamic mode. Presented at 1st European Conference on Unsaturated Soils, E-UNSAT 2008, Durham, UK
• Toll, D., Mendes, J., Augarde, C., Karthikeyan, M., Phoon, K., Gallipoli, D., & Lin, K. (2008, December). Effects of Climate Change on Slopes for Transportation Infrastructure. Presented at 1st International Conference on Transportation Geotechnics, Nottingham, UK
• Toll, D. (2008, December). International Data Exchange: The Future for Geo-engineering. Presented at 12th International Conference of International Association for Computer Methods and Advances in Geomechanics (IACMAG), Goa, India
• Hughes, P., Glendinning, S., Dixon, N., Dijkstra, T., Clarke, D., Smethurst, J., Powrie, W., Toll, D., Mendes, J., & Hughes, D. (2008, December). Field Testing and Modelling the Effects of Climate on Geotechnical Infrastructure – A Collaborative Approach. Presented at 1st International Conference on Transportation Geotechnics, Nottingham, UK
• Jotisankasa, A., Kulsawan, B., Toll, D., & Rahardjo, H. (2008, December). Studies of Rainfall-induced Landslides in Thailand and Singapore. Presented at 1st European Conf. Unsaturated Soils, Durham, UK
• Mendes, J., Toll, D., Augarde, C., & Gallipoli, D. (2008, December). A System for Field Measurement of Suctions using High Capacity Tensiometers. Presented at 1st European Conf. Unsaturated Soils, Durham, UK
• Mendes, J., Gallipoli, D., Toll, D., Augarde, C., Glendinning, S., & Hughes, P. (2008, December). The Effect of Climate Change on Infrastructure Embankments: The BIONICS Project. Presented at 11th Portuguese National Congress of Geotechnics & 6th Congresso Luso-Brasileiro de Geotecnia, Coimbra, Portugal
• Glendinning, S., Hughes, P., Hughes, D., Clarke, D., Smethurst, J., Powrie, W., Dixon, N., Dijkstra, T., Toll, D., & Mendes, J. (2008, December). Biological and Engineering Impacts of Climate on Slopes – Learning from Full-Scale. Presented at 10th International Symposium on Landslides and Engineered Slopes, Xian, P.R. China
• Lourenço, S., Toll, D., Augarde, C., Gallipoli, D., Evans, F., & Medero, G. (2008, December). Evaluation of Suction Measurement by the Tensiometer and the Axis Translation Technique. Presented at 1st European Conf. Unsaturated Soils, Durham, UK
• Karthikeyan, M., Toll, D., & Phoon, K. (2008, December). Prediction of Changes in Pore-water Pressure Response due to Rainfall Events. Presented at 1st European Conf. Unsaturated Soils, Durham, UK
• Toll, D., Ali Rahman, Z., & Gallipoli, D. (2008, December). Critical State Conditions for an Unsaturated Artificially Bonded Soil. Presented at 1st European Conf. Unsaturated Soils, Durham, UK
• Toll, D. (2008, December). Representing Geo-Engineering Data from Instruments and Transducers. Presented at GeoCongress 2008, New Orleans, USA
• Toll, D. (2007, July). Representing Slopes in XML. Presented at Proc. Specialized Session S02 of 11th Congress of the International Society for Rock Mechanics, Lisbon
• Lourenço, S., Gallipoli, D., Toll, D., Evans, F., & Medero, G. (2007, December). Determination of the Soil Water Retention Curve with Tensiometers. Presented at Mechanics of Unsaturated Soils, Weimar, Germany
• Toll, D., Phoon, K., Cheng, Y., & Karthikeyan, M. (2007, December). The Effect of Climate on Landslides in Singapore. Presented at Expert Symposium on Climate Change: Modelling, Impacts & Adaptations, Singapore
• Toll, D., Ali Rahman, Z., & Gallipoli, D. (2007, December). Towards Understanding the Behaviour of Unsaturated Bonded Soils. Presented at 3rd Asian Conference on Unsaturated Soils, Nanjing, P.R. China
• Martin, J., & Toll, D. (2006, September). The Development of a Data Structure for the Storage of Preliminary Site Investigation Data. Presented at 10th Congress of International Association of Engineering Geology and Environment, Nottingham, UK
• Hossain, S., & Toll, D. (2006, September). Geomechanical Aspects of some Tropical Clay Soils from Dhaka, Bangladesh. Presented at 10th Congress of the International Aassociation of Engineering Geology an the Environment, Nottingham, UK
• Lourenço, S., Gallipoli, D., Toll, D., & Evans, F. (2006, December). Use of Tensiometers for the Measurement of Soil Suction. Presented at 10th Congresso Nacional de Geotecnia, Lisbon
• Toll, D., Malandraki, V., Ali Rahman, Z., & Gallipoli, D. (2006, December). Bonded Soils: Problematic or Predictable?. Presented at 2nd International Conference on Problematic Soils, Malaysia
• Lourenço, S., Gallipoli, D., Toll, D., & Evans, F. (2006, December). Development of a Commercial Tensiometer for Triaxial Testing of Unsaturated Soils. Presented at 4th International Conference on Unsaturated Soils., Carefree, Arizona, USA
• Stenke, F., Toll, D., & Gallipoli, D. (2006, December). Comparison of Water Retention Curves for Clayey Soils using Different Measurement Techniques. Presented at 4th International Conference on Unsaturated Soils., Carefree, Arizona, USA
• Gallipoli, D., Toll, D., Augarde, C., Tarantino, A., De Gennaro, V., Vaunat, J., Wheeler, S., & Mancuso, C. (2006, December). The MUSE Network: Sharing Research Expertise on Unsaturated Soils across Europe. Presented at 4th International Conference on Unsaturated Soils., Carefree, Arizona, USA
• Chandler, R., Quinn, P., Beaumont, A., Evans, D., & Toll, D. (2006, December). Combining the power of AGS and XML: AGSML the data format for the future. Presented at GeoCongress 2006: Geotechnical Engineering in the Information Technology Age, Atlanta, USA
• Walker, S., Gallipoli, D., & Toll, D. (2005, December). The Effect of Structure on the Water Retention of Soil Tested using Different Methods of Suction Measurement. Presented at Proc. International Symposium on Advanced Experimental Unsaturated Soil Mechanics, Trento, Italy
• Stephens, S., Gallipoli, D., & Toll, D. (2004, December). Influence of Initial Water Content on the Strength of a Statically Compacted Clay. Presented at 5th Brazilian Symposium on Unsaturated Soils, São Carlos, Brazil
• Gallipoli, D., Stephens, S., & Toll, D. (2004, December). L'effetto del contenuto d'acqua iniziale sulle proprieta meccaniche di un argilla costipata (the effect of initial water content on the mechanical properties of compacted clay). Presented at Incontro Annuale dei Ricercatori di Geotecnica (IARG2004), Trento, Italy
• Toll, D. (2004, December). The Critical State in Unsaturated Soils. Presented at 3rd International Conference on Unsaturated Soils., Recife, Brazil
• Toll, D., & Hossain, A. (2003, December). Pre-failure behaviour of the tropical clay soils of Dhaka, Bangladesh. Presented at 3rd Int. Conf. on Deformation Characteristics of Geomaterials, Lyon, France
• Tsaparas, I., & Toll, D. (2003, December). Factors affecting Infiltration into an Unsaturated Soil Slope. Presented at 2nd Asian Conference on Unsaturated Soils (UNSAT-ASIA 2003), Osaka, Japan
• Toll, D. (2003, December). On the Shear Strength of Unsaturated Soils. Presented at International Conference on Problematic Soils, Nottingham, UK
• Tsaparas, I., & Toll, D. (2002, December). Numerical Analysis of Infiltration into Unsaturated Residual Soil Slopes. Presented at 3rd International Conference on Unsaturated Soils., Recife, Brazil
• Hatipoglu, B., Toll, D., Giolas, A., & Incecik, M. (2001, December). Knowledge-based geotechnical correlation systems applied to slope stability. Presented at 15th International Conference on Soil Mechanics and Geotechnical Engineering., Istanbul, Turkey
• Toll, D., Tsaparas, I., & Rahardjo, H. (2001, December). The influence of rainfall sequences on negative pore-water pressures within slopes. Presented at 15th International Conference on Soil Mechanics and Geotechnical Engineering., Istanbul, Turkey
• Toll, D. (2001, December). Computers and geotechnical engineering: A review. Presented at 8th Int. Conf. on Civil and Structural Engineering Computing, Eisenstadt, Austria
• Toll, D., Ong, B., & Rahardjo, H. (2000, December). Triaxial testing of unsaturated samples of undisturbed residual soil from Singapore. Presented at 1st Asian Conference on Unsaturated Soils, Singapore
• Jaksa, M., Davison, L., & Toll, D. (2000, December). Computer aided learning in geotechnical engineering education. Presented at GeoEng 2000, Melbourne, Australia
• Tsaparas, I., Toll, D., & Rahardjo, H. (2000, December). Influence of rainfall sequences on the seepage conditions within a slope: A parametric study. Presented at 1st Asian Conference on Unsaturated Soils., Singapore
• Ling, N., & Toll, D. (2000, December). Suction and strength behaviour of unsaturated calcrete. Presented at 1st Asian Conference on Unsaturated Soils, Singapore
• Wong, J., Rahardjo, H., Toll, D., & Leong, E. (2000, December). Shear strength of undisturbed Bukit Timah granitic soils under infiltration conditions. Presented at 1st Asian Conference on Unsaturated Soils, Singapore
• Toll, D. (2000, December). Information technology applications in geotechnical education and vocational training. Presented at 12th European Conference Soil Mechanics and Geotechnical Engineering., Amsterdam, The Netherlands
• Toll, D. (1999, December). Using Excel macros for data processing
• Toll, D. (1999, December). A data acquisition and control system for geotechnical testing
• Toll, D. (1998, December). A review of artificial intelligence systems for site characterization
• Oliver, A., & Toll, D. (1996, December). A computer system for site investigation data management and interpretation
• Toll, D. (1996, December). Discussion on session 2: Data management
• Oliver, A., & Toll, D. (1995, December). An object-oriented approach to site investigation data management and interpretation
• Toll, D., & Barr, R. (1995, December). Computer-aided learning for geotechnical engineering
• Toll, D., & Giolas, A. (1995, December). A knowledge-based System for estimation of geotechnical properties
• Toll, D. (1994, December). Interpreting Site Investigation Data Using a Knowledge-Based System
• Malandraki, V., & Toll, D. (1994, December). Yielding of a Weakly Bonded Artificial Soil
• Toll, D. (1993, December). A Computer Control System For Stress Path Triaxial Testing
• Toll, D., & Malandraki, V. (1993, December). Triaxial Testing of a Weakly Bonded Soil
• Moula, M., & Toll, D. (1993, December). Representing Geotechnical Knowledge - Soils and Field Tests
• Vaptismas, N., & Toll, D. (1993, December). Interpreting Borehole Information
• Toll, D., Moula, M., & Vaptismas, N. (1991, December). Representing the Engineering Description of Soils in Knowledge Based Systems
• Toll, D., Vaptismas, N., & Moula, M. (1991, December). Comparing Soils Using Knowledge Based Systems
• Toll, D., & Attewell, P. (1990, December). Use of an Expert System in Site Investigation
• Grace, H., & Toll, D. (1989, December). The Improvement of Roads in Developing Countries to Bituminous Standards Using Naturally-Occurring Laterites. Presented at 3rd International Conference on Unbound Aggregates in Roads

Conference Proceeding

• (2015, September). Geotechnical Engineering for Infrastructure and Development, XVI European Conference on Soil Mechanics and Geotechnical Engineering, Edinburgh. Presented at XVI European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE), Edinburgh, Scotland

Edited book

• Osman, A., & Toll, D. (Eds.). (2015). Proceedings of the 24th European Young Geotechnical Engineering. Durham University
• Toll, D., Zhu, H., Osman, A., Coombs, W., Li, X., & Rouainia, M. (Eds.). (2014). Information Technology in Geo-Engineering. IOS Press
• Huat, B., Toll, D., & Prasad, A. (Eds.). (2012). Handbook of Tropical Residual Soils Engineering. Taylor and Francis Group. https://doi.org/10.1201/b12302
• Toll, D., Zhu, H., & Li, X. (Eds.). (2010). Information Technology in Geo-Engineering. Amsterdam: IOS Press (Millpress)
• Toll, D., Augarde, C., Gallipoli, D., & Wheeler, S. (Eds.). (2008). Unsaturated Soils: Advances in Geo-Engineering. CRC Press/Balkema (Taylor & Francis)
• Liong, S., Phoon, K., & Toll, D. (Eds.). (2007). Climate Change: Modelling, Impacts and Adaptions. Research Publishing Services
• Toll, D., & Chen, Z. (Eds.). (2007). Rock Mechanics Data: Representation and Standardisation
• Toll, D. (Ed.). (2006). Proc. Geo-Singapore 2006: International Conference on Geotechnical Engineering. Ci-Premier
• Toll, D. (Ed.). (2001). Unsaturated soil concepts and their application in geotechnical practice. Kluwer Academic Publishers
• Rahardjo, H., Toll, D., & Leong, E. (Eds.). (2000). Unsaturated Soils for Asia. A A Balkema

Journal Article

• Toll, D. (online). Geo-Engineering Data: Representation and Standardisation. The electronic journal of geotechnical engineering,
• Toll, D., Walthall, S., & Sharma, S. (online). Format for geotechnical data exchange in the United Kingdom. Transportation Research Record, 26-33
• Javadi, A., Ahangar-Asr, A., Johari, A., Faramarzi, A., & Toll, D. (online). Modelling stress–strain and volume change behaviour of unsaturated soils using an evolutionary based data mining technique, an incremental approach. Engineering Applications of Artificial Intelligence, https://doi.org/10.1016/j.engappai.2012.03.006
• Kumar, A., Azizi, A., & Toll, D. (online). Deterioration of a compacted soil due to suction loss and desiccation cracking. Canadian Geotechnical Journal, https://doi.org/10.1139/cgj-2023-0453
• Dias, A. S., Hughes, P. N., & Toll, D. G. (2024). Soil–Water Retention Curve Prediction for Compacted London Clay Subjected to Moisture Cycles. Geotechnical and Geological Engineering, 42(4), 2799-2814. https://doi.org/10.1007/s10706-023-02706-z
• Sana, E., Kumar, A., Robson, E., Prasanna, R., Kala, U., & Toll, D. G. (2024). Preliminary assessment of series of landslides and related damage by heavy rainfall in Himachal Pradesh, India, during July 2023. Landslides, 21(4), 919-931. https://doi.org/10.1007/s10346-023-02209-1
• Dias, A. S., Hughes, P. N., Toll, D. G., & Glendinning, S. (2023). A simple method to determine soil–water retention curves of compacted active clays. Transportation Geotechnics, 43, 101138. https://doi.org/10.1016/j.trgeo.2023.101138
• Tinoco, J., Gomes Correia, A., Cortez, P., & Toll, D. (2023). An Evolutionary Neural Network Approach for Slopes Stability Assessment. Applied Sciences, 13(14), Article 8084. https://doi.org/10.3390/app13148084
• Azizi, A., Kumar, A., & Toll, D. G. (2023). Coupling cyclic and water retention response of a clayey sand subjected to traffic and environmental cycles. Géotechnique, 73(5), 401-417. https://doi.org/10.1680/jgeot.21.00063
• Azizi, A., Kumar, A., & Toll, D. G. (2023). The bounding effect of the water retention curve on the cyclic response of an unsaturated soil. Acta Geotechnica, 18(4), 1901-1917. https://doi.org/10.1007/s11440-022-01724-0
• Pradhan, S., Toll, D., Rosser, N., & Brain, M. (2022). An investigation of the combined effect of rainfall and road cut on landsliding. Engineering Geology, 307, Article 106787. https://doi.org/10.1016/j.enggeo.2022.106787
• Kumar, A., Azizi, A., & Toll, D. (2022). Application of suction monitoring for cyclic triaxial testing of compacted soils. Journal of Geotechnical and Geoenvironmental Engineering, 148(4), https://doi.org/10.1061/%28asce%29gt.1943-5606.0002766
• Gaspar, T., Jacobsz, S., Heymann, G., Toll, D., Gens, A., & Osman, A. (2022). The mechanical properties of a high plasticity expansive clay. Engineering Geology, 303, https://doi.org/10.1016/j.enggeo.2022.106647
• Kerr, H. C., Johnson, K. L., & Toll, D. G. (2022). Reusing Fe water treatment residual as a soil amendment to improve physical function and flood resilience. SOIL, 8(1), 283-295. https://doi.org/10.5194/soil-8-283-2022
• Stirling, R., Toll, D., Glendinning, S., Helm, P., Yildiz, A., Hughes, P., & Asquith, J. (2021). Weather-driven deterioration processes affecting the performance of embankment slopes. Géotechnique, 71(11), 957-969. https://doi.org/10.1680/jgeot.19.sip.038
• Tinoco, J., Parente, M., Gomes Correia, A., Cortez, P., & Toll, D. (2021). Predictive and prescriptive analytics in transportation geotechnics: Three case studies. Transportation Engineering, 5, Article 100074. https://doi.org/10.1016/j.treng.2021.100074
• Grebby, S., Sowter, A., Gluyas, J., Toll, D., Gee, D., Athab, A., & Girindran, R. (2021). Advanced analysis of satellite data reveals ground deformation precursors to the Brumadinho Tailings Dam collapse. Communications Earth & Environment, 2, Article 2. https://doi.org/10.1038/s43247-020-00079-2
• Davis, C., Coningham, R., Acharya, K., Kunwar, R., Forlin, P., Weise, K., Maskey, P., Joshi, A., Simpson, I., Toll, D., Wilkinson, S., Hughes, P., Sarhosis, V., Kumar, A., & Schmidt, A. (2020). Identifying archaeological evidence of past earthquakes in a contemporary disaster scenario: Case-studies of damage, resilience and risk reduction from the 2015 Gorkha Earthquake and past seismic events within the Kathmandu Valley UNESCO World Heritage Property (Nepal). Journal of Seismology, 24(4), 729-751. https://doi.org/10.1007/s10950-019-09890-7
• Kumar, A., Hughes, P. N., Sarhosis, V., Toll, D., Wilkinson, S., Coningham, R., Acharya, K. P., Weise, K., Joshi, A., Davis, C., Kunwar, R. B., & Maskey, P. N. (2020). Experimental, numerical and field study investigating a heritage structure collapse after the 2015 Gorkha earthquake. Natural Hazards, 101(1), 231-253. https://doi.org/10.1007/s11069-020-03871-7
• Liu, G., Toll, D., Kong, L., & Asquith, J. (2020). Matric Suction and Volume Characteristics of Compacted Clay Soil under Drying and Wetting Cycles. Geotechnical Testing Journal, 43(2), 464-479. https://doi.org/10.1520/gtj20170310
• Toll, D. G., Rahim, M. S. M., Karthikeyan, M., & Tsaparas, I. (2019). Soil–atmosphere interactions for analysing slopes in tropical soils in Singapore. Environmental Geotechnics, 6(6), 361-372. https://doi.org/10.1680/jenge.15.00071
• Coningham, R., Acharya, K., Barclay, C., Barclay, R., Davis, C., Graham, C., Hughes, P., Joshi, A., Kelly, L., Khanal, S., Kilic, A., Kinnaird, T., Kunwar, R., Kumar, A., Maskey, P., Lafortune-Bernard, A., Lewer, N., McCaughie, D., Mirnig, N., Roberts, A., …Wilson, A. (2019). Reducing Disaster Risk to Life and Livelihoods by Evaluating the Seismic Safety of Kathmandu’s Historic Urban Infrastructure: enabling an interdisciplinary pilot. Journal of the British Academy, 7(S2), 45-82. https://doi.org/10.5871/jba/007s2.045
• Mendes, J., Gallipoli, D., Tarantino, A., & Toll, D. (2019). On the development of an ultra-high-capacity tensiometer capable of measuring water tensions to 7 MPa. Géotechnique, 69(6), 560-564. https://doi.org/10.1680/jgeot.18.t.008
• Tinoco, J., Gomes Correia, A., Cortez, P., & Toll, D. G. (2018). Data-Driven Model for Stability Condition Prediction of Soil Embankments Based on Visual Data Features. Journal of Computing in Civil Engineering, 32(4), Article 04018027. https://doi.org/10.1061/%28asce%29cp.1943-5487.0000770
• Tang, A., Hughes, P., Dijkstra, T., Askarinejad, A., Brenčič, M., Cui, Y., Diez, J., Firgi, T., Gajewska, B., Gentile, F., Grossi, G., Jommi, C., Kehagia, F., Koda, E., ter Maat, H., Lenart, S., Lourenco, S., Oliveira, M., Osinski, P., Springman, S., …Van Beek, V. (2018). Atmosphere–vegetation–soil interactions in a climate change context; impact of changing conditions on engineered transport infrastructure slopes in Europe. Quarterly Journal of Engineering Geology and Hydrogeology, 51(2), 156-168. https://doi.org/10.1144/qjegh2017-103
• Ali Rahman, Z., Toll, D., & Gallipoli, D. (2018). Critical state behaviour of weakly bonded soil in drained state. Geomechanics and Geoengineering, 13(4), 233-245. https://doi.org/10.1080/17486025.2018.1454608
• Tinoco, J., Gomes Correia, A., Cortez, P., & Toll, D. G. (2017). Stability Condition Identification of Rock and Soil Cutting Slopes Based on Soft Computing. Journal of Computing in Civil Engineering, 32(2), Article 04017088. https://doi.org/10.1061/%28asce%29cp.1943-5487.0000739
• Toll, D., & Ali Rahman, Z. (2017). Critical state shear strength of an unsaturated artificially cemented sand. Géotechnique, 67(3), 208-215. https://doi.org/10.1680/jgeot.15.p.042
• Mendes, J., & Toll, D. (2016). Influence of initial water content on the mechanical behaviour of an unsaturated sandy clay soil. International Journal of Geomechanics, 16(6), Article D4016005. https://doi.org/10.1061/%28asce%29gm.1943-5622.0000594
• Winter, M. G., Smith, D. M., Eldred, P. J., Toll, D. G., & Chrimes, M. (2016). Review of the XVI European Conference on Soil Mechanics and Geotechnical Engineering. Geotechnical Engineering, 169(5), https://doi.org/10.1680/jgeen.16.00020
• Toll, D. (2015). California Bearing Ratio tests on a lateritic gravel from Kenya. Transportation Geotechnics, 5, 59-67. https://doi.org/10.1016/j.trgeo.2015.09.004
• D’Onza, F., Wheeler, S., Gallipoli, D., Barrera Bucio, M., Hofmann, M., Lloret-Cabot, M., Lloret Morancho, A., Mancuso, C., Pereira, J.-M., Romero Morales, E., Sánchez, M., Solowski, W., Tarantino, A., Toll, D., & Vassallo, R. (2015). Benchmarking selection of parameter values for the Barcelona basic model. Engineering Geology, 196, 99-118. https://doi.org/10.1016/j.enggeo.2015.06.022
• Cassar, J., Winter, M., Marker, B., Bromhead, E., Smith, J., Toll, D., Walton, N., Entwisle, D., & Dijkstra, T. (2013). Introduction to the Stone Cycle and the Conservation of Historic Buildings. Quarterly Journal of Engineering Geology and Hydrogeology, 46(4), 363-366. https://doi.org/10.1144/qjegh2013-052
• Toll, D., Lourenço, S., & Mendes, J. (2013). Advances in suction measurements using high suction tensiometers. Engineering Geology, 165, 29-37. https://doi.org/10.1016/j.enggeo.2012.04.013
• Toll, D., Mendes, J., Hughes, P., Glendinning, S., & Gallipoli, D. (2012). Climate Change and the Role of Unsaturated Soil Mechanics. Geotechnical engineering, 43(1), 76-82
• Lourenco, S., Gallipoli, D., Augarde, C., Toll, D., Fisher, P., & Congreve, A. (2012). Formation and evolution of water menisci in unsaturated granular media. Géotechnique, 62(3), 193-199. https://doi.org/10.1680/geot.11.p.034
• Tarantino, A., Gallipoli, D., Augarde, C., De Gennaro, V., Gomez, R., Laloui, L., Mancuso, C., McCloskey, G., Munoz, J., Pereira, J.-M., Peron, H., Pisoni, G., Romero, E., Raveendiraraj, A., Rojas, J., Toll, D., Tombolato, S., & Wheeler, S. (2011). Benchmark of experimental techniques for measuring and controlling suction. Géotechnique, 61(4), https://doi.org/10.1680/geot.2011.61.4.303
• Lourenço, S., Gallipoli, D., Toll, D., Augarde, C., & Evans, F. (2011). A new procedure for the determination of the Soil Water Retention Curves by continuous drying using high suction tensiometers. Canadian Geotechnical Journal, 48(2), 327-335. https://doi.org/10.1139/t10-062
• Toll, D., Lourenço, S., Mendes, J., Gallipoli, D., Evans, F., Augarde, C., Cui, Y., Tang, A., Rojas Vidovic, J., Pagano, L., Mancuso, C., Zingariello, C., & Tarantino, A. (2011). Soil suction monitoring for landslides and slopes. Quarterly Journal of Engineering Geology and Hydrogeology, 44, 23-33. https://doi.org/10.1144/1470-9236/09-010
• Lourenço, S., Gallipoli, D., Augarde, C., Toll, D., & Evans, F. (2011). Towards a Tensiometer Based Suction Control System for Laboratory Testing of Unsaturated Soils. Geotechnical Testing Journal, 34(6), 755-764. https://doi.org/10.1520/gtj103755
• Ali Rahman, Z., Toll, D., Gallipoli, D., & Taha, M. (2010). Micro-structure and Engineering Behaviour of Weakly Bonded Soil. Sains malaysiana, 36(6),
• Lourenço, S., Gallipoli, D., Toll, D., Evans, F., Leong, E., Rahardjo, H., & He, L. (2010). Calibration of high suction tensiometers - Discussion. Géotechnique, 60(3), 233-234. https://doi.org/10.1680/geot.8.d.019
• Lourenço, S., Gallipoli, D., Toll, D., & Evans, F. (2009). On the Measurement of Water Pressure in Soils with High Suction Tensiometers. Geotechnical Testing Journal, 32(6), 565-57. https://doi.org/10.1520/gtj102372
• Hughes, P., Glendinning, S., Mendes, J., Parkin, G., Toll, D., Gallipoli, D., & Miller, P. (2009). Full-scale testing to assess climate effects on embankments. Engineering Sustainability, 162(2), 67-79. https://doi.org/10.1680/ensu.2009.162.2.67
• Jaquin, P., Augarde, C., Gallipoli, D., & Toll, D. (2009). The strength of unstabilised rammed earth materials. Géotechnique, 59(5), 487-490. https://doi.org/10.1680/geot.2007.00129
• Lourenço, S., Gallipoli, D., Toll, D., Augarde, C., Evans, F., & Medero, G. (2008). Calibrations of a high-suction tensiometer. Géotechnique, 58(8), 659-668. https://doi.org/10.1680/geot.2008.58.8.659
• Tarantino, A., Ridley, A., & Toll, D. (2008). Field measurement of suction, water content, and water permeability. Geotechnical and Geological Engineering, 26(6), 751-782. https://doi.org/10.1007/s10706-008-9205-4
• Fyson, M., & Toll, D. (2008). Case-Based System for Slope Design. Computers and Geotechnics, 35(3), 468-478. https://doi.org/10.1016/j.compgeo.2007.06.007
• Lourenço, S., Gallipoli, D., Toll, D., Evans, F., & Medero, G. (2007). Discussion of “The development of a suction control system for a triaxial apparatus”, A. Jotisankasa, M.Coop and A. Ridley. Geotechnical Testing Journal, 30(4), 738-741. https://doi.org/10.1520/gtj100928
• Martin, J., & Toll, D. (2006). The Development of a Knowledge-Based System for the Preliminary Investigation of Contaminated Land. Computers and Geotechnics, 33(2), 93-100. https://doi.org/10.1016/j.compgeo.2006.03.002
• Haeri, S., Hamidi, A., Hosseini, S., Asghari, E., & Toll, D. (2006). Effect of Cement Type on the Mechanical Behavior of a Gravelly Sand. Geotechnical and Geological Engineering, 24(2), 335-360. https://doi.org/10.1007/s10706-004-7793-1
• Haeri, S., Hosseini, S., Toll, D., & Yasrebi, S. (2005). The behaviour of an artificially cemented sandy gravel. Geotechnical and Geological Engineering, 23(5), 537-560. https://doi.org/10.1007/s10706-004-5110-7
• Hosseini, S., Haeri, S., & Toll, D. (2005). Behaviour of gravelly sand using critical state concepts. Scientia iranica, 12(2), 167-177
• Toll, D., & Ong, B. (2004). Critical state parameters for an unsaturated residual sandy soil - Discussion. Géotechnique, 54(1), 69 - 71. https://doi.org/10.1680/geot.54.1.69.36328
• Asghari, E., Toll, D., & Haeri, D. (2004). Effect of cementation on the shear strength of Tehran gravelly sand. Journal of sciences, Islamic Republic of Iran, 15(1), 65-71
• Toll, D., & Cubitt, A. (2003). Representing geotechnical entities on the world wide web. Advances in Engineering Software, 34(11-12), 729-736. https://doi.org/10.1016/s0965-9978%2803%2900097-8
• Topping, B., & Toll, D. (2003). Special issue on Civil-Comp 2001. Advances in Engineering Software, 34(11-12), 655-656. https://doi.org/10.1016/s0965-9978%2803%2900096-6
• Tsaparas, I., Rahardjo, H., Toll, D., & Leong, E. (2003). Infiltration characteristics of two instrumented residual soil slopes. Canadian Geotechnical Journal, 40(5), 1012-1032. https://doi.org/10.1139/t03-049
• Toll, D., & Ong, B. (2003). Critical-state parameters for an unsaturated residual sandy clay. Géotechnique, 53(1), 93-103. https://doi.org/10.1680/geot.53.1.93.37255
• Toll, D., & Shields, R. (2003). A Web-based Data Format for Ground Investigation Data. The electronic journal of geotechnical engineering, 8(D),
• Asghari, E., Toll, D., & Haeri, S. (2003). Triaxial behaviour of a cemented gravelly sand, Tehran Alluvium. Geotechnical and Geological Engineering, 21(1), 1-28. https://doi.org/10.1023/a%3A1022934624666
• Tsaparas, I., Rahardjo, H., Toll, D., & Leong, E. (2002). Controlling parameters for rainfall-induced landslides. Computers and Geotechnics, 29(1), 1-27. https://doi.org/10.1016/s0266-352x%2801%2900019-2
• Wong, J., Rahardjo, H., Toll, D., & Leong, E. (2001). Modified triaxial apparatus for shearing-infiltration test. Geotechnical Testing Journal, 24(4), 370-380. https://doi.org/10.1520/gtj11134j
• Toll, D. (2001). Rainfall-induced landslides in Singapore. Geotechnical Engineering, 149(4), 211-216. https://doi.org/10.1680/geng.149.4.211.48654
• Rahardjo, H., Li, X., Toll, D., & Leong, E. (2001). The effect of antecedent rainfall on slope stability. Geotechnical and Geological Engineering, 19(3-4), 371 - 399. https://doi.org/10.1023/a%3A1013129725263
• Aung, K., Rahardjo, H., Leong, E., & Toll, D. (2001). Relationship between porosimetry measurement and soil–water characteristic curve for an unsaturated residual soil. Geotechnical and Geological Engineering, 19(3-4), 401 - 416. https://doi.org/10.1023/a%3A1013125600962
• Malandraki, V., & Toll, D. (2001). Triaxial tests on weakly bonded soil with changes in stress path. Journal of Geotechnical and Geoenvironmental Engineering, 127(3), 282-291. https://doi.org/10.1061/%28asce%291090-0241%282001%29127%3A3%28282%29
• Toll, D., & Barr, R. (2001). A decision support system for geotechnical applications. Computers and Geotechnics, 28(8), 575-590. https://doi.org/10.1016/s0266-352x%2801%2900014-3
• Malandraki, V., & Toll, D. (2000). Drained probing triaxial tests on a weakly bonded artificial soil. Géotechnique, 50(2), 141-151
• Giolas, A., & Toll, D. (1999). A knowledge-based system for correlations using object hierarchies. Computers and Geotechnics, 25(3), 123-140. https://doi.org/10.1016/s0266-352x%2899%2900023-3
• Toll, D., & Giolas, A. (1998). Representing geotechnical properties in a knowledge-based system. Advances in Engineering Software, 29, 627-636
• Toll, D., & Barr, R. (1998). A computer-aided learning system for the design of foundations. Advances in Engineering Software, 29(7-9), 637-643. https://doi.org/10.1016/s0965-9978%2898%2900029-5
• Thompson, L., & Toll, D. (1997). Evaluating students' and tutors' perceptions of computer-assisted learning materials: A case study. Innovations in education and training international, 34(4), 272-280
• Toll, D. (1996). Artificial intelligence applications in geotechnical engineering
• Malandraki, V., & Toll, D. (1996). The definition of yield for bonded materials. Geotechnical and Geological Engineering, 14(1), 67 - 82. https://doi.org/10.1007/bf00431235
• Toll, D. (1995). The role of a knowledge-based system in interpreting geotechnical information. Géotechnique, 45(3), 525-531
• Moula, M., Toll, D., & Vaptismas, N. (1995). Knowledge-based systems in geotechnical engineering. Géotechnique, 45(2), 209-221
• Toll, D. (1991). Towards understanding the behaviour of naturally-occurring road construction materials. Geotechnical and Geological Engineering, 9(3-4), 197 - 217. https://doi.org/10.1007/bf00881741