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Comparison of Soil Water Retention Curves for sandy clay, obtained using different laboratory testing methods (2016)
Conference Proceeding
Osinski, P., Toll, D., & Koda, E. (2016). Comparison of Soil Water Retention Curves for sandy clay, obtained using different laboratory testing methods. . https://doi.org/10.1051/e3sconf/20160911008

The design of engineering structures is still a challenging task when considering unsaturated soil mechanics behaviour. The present paper focuses on analysing Soil Water Retention Curves (SWRC) for clayey soil samples collected from a purpose built e... Read More about Comparison of Soil Water Retention Curves for sandy clay, obtained using different laboratory testing methods.

Water repellent soils: the case for unsaturated soil mechanics (2016)
Conference Proceeding
Beckett, C., Fourie, A., & Toll, D. (2016). Water repellent soils: the case for unsaturated soil mechanics. . https://doi.org/10.1051/e3sconf/20160911011

Water repellent (or “hydrophobic” or “non-wetting”) soils have been studied by soil scientists for well over a century. These soils are typified by poor water infiltration, which leads to increased soil erosion and poor crop growth. However, the impo... Read More about Water repellent soils: the case for unsaturated soil mechanics.

Soil water retention behaviour for an instrumented embankment (2016)
Conference Proceeding
Toll, D., Hughes, P., & Asquith, J. (2016). Soil water retention behaviour for an instrumented embankment. . https://doi.org/10.1051/e3sconf/20160910013

Measurement of soil suction is important as soil suction is one of the two stress-state variables that control both the hydro and mechanical behaviour of unsaturated soils. One of the soil suction measurement techniques is the filter paper method. Ev... Read More about Soil water retention behaviour for an instrumented embankment.

Modelling of the water retention characteristic of deformable soils (2016)
Conference Proceeding
Wang, Y., Sheng, D., Ross, K., & Toll, D. G. (2016). Modelling of the water retention characteristic of deformable soils. . https://doi.org/10.1051/e3sconf/20160911005

A recently proposed water retention model has been further developed for the application on unsaturated deformable soils. The physical mechanisms underpinning the water retention characteristic of soils was at first described in terms of traditional... Read More about Modelling of the water retention characteristic of deformable soils.

Flood Holding Capacity: A Novel Concept to Evaluate the Resilience of Amended Soils (2016)
Conference Proceeding
Kerr, H., Johnson, K., Toll, D. G., & Mansfield, F. (2016). Flood Holding Capacity: A Novel Concept to Evaluate the Resilience of Amended Soils. . https://doi.org/10.1061/9780784480120.041

The term water holding capacity (WHC) has long been used to help researchers determine how soils respond to typical wetting under rainfall. However the term WHC is insufficient as a measurement to describe how soil responds to flooding events. This p... Read More about Flood Holding Capacity: A Novel Concept to Evaluate the Resilience of Amended Soils.

Soil Water Retention Behaviour of a Sandy Clay Fill Material (2016)
Conference Proceeding
Toll, D., Asquith, J., Hughes, P., & Osinski, P. (2016). Soil Water Retention Behaviour of a Sandy Clay Fill Material. . https://doi.org/10.1016/j.proeng.2016.06.039

The performance of transportation networks is critically dependent on the performance of cutting and embankment slopes. An instrumented embankment has been established at Nafferton farm in North East England to investigate the response of an embankme... Read More about Soil Water Retention Behaviour of a Sandy Clay Fill Material.

Error behaviour in explicit integration algorithms with automatic substepping (2016)
Journal Article
Lloret-Cabot, M., Sloan, S. W., Sheng, D., & Abbo, A. J. (2016). Error behaviour in explicit integration algorithms with automatic substepping. International Journal for Numerical Methods in Engineering, 108(9), 1030-1053. https://doi.org/10.1002/nme.5245

This paper studies the behaviour of the error incurred when numerically integrating the elasto‐plastic mechanical relationships of a constitutive model for soils using an explicit substepping formulation with automatic error control. The correct upda... Read More about Error behaviour in explicit integration algorithms with automatic substepping.

Tropical Soils (2016)
Book Chapter
Toll, D. (in press). Tropical Soils. In J. Burland, T. Chapman, H. Skinner, & M. Brown (Eds.), ICE Manual of Geotechnical Engineering (341-361). Institution of Civil Engineers

Influence of initial water content on the mechanical behaviour of an unsaturated sandy clay soil (2016)
Journal Article
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

The mechanical behavior of a sandy clay soil was investigated by a series of constant water content triaxial tests on unsaturated samples with suction measurements. The tests were carried out in double-cell triaxial cells on compacted samples and als... Read More about Influence of initial water content on the mechanical behaviour of an unsaturated sandy clay soil.

Geotechnical Engineering for Infrastructure and Development, XVI European Conference on Soil Mechanics and Geotechnical Engineering, Edinburgh (2015)
Conference Proceeding
(2015). Geotechnical Engineering for Infrastructure and Development, XVI European Conference on Soil Mechanics and Geotechnical Engineering, Edinburgh. In M. Winter, D. Smith, P. Eldred, & D. Toll (Eds.), . https://doi.org/10.1680/ecsmge.60678.vol1.001

Geotechnical engineering is a discipline that plays a critical role within all infrastructure and development projects. Failure to adequately account for the influence of the ground regularly leads to increased costs that often can be disproportionat... Read More about Geotechnical Engineering for Infrastructure and Development, XVI European Conference on Soil Mechanics and Geotechnical Engineering, Edinburgh.

Innovation: Stepping Up the Industry (2015)
Report
Barnes, B., Coppenhall, P., Hove, T., Huett, J., Jefferis, P., McPhillips, S., & Roche, M. (in press). Innovation: Stepping Up the Industry. [No known commissioning body]

Research-informed design, management and maintenance of infrastructure slopes: development of a multi-scalar approach (2015)
Conference Proceeding
Glendinning, S., Helm, P., Rouainia, M., Stirling, R., Asquith, J., Hughes, P., …Muddle, D. (2015). Research-informed design, management and maintenance of infrastructure slopes: development of a multi-scalar approach. In International Symposium on Geohazards and Geomechanics (ISGG2015). https://doi.org/10.1088/1755-1315/26/1/012005

The UK’s transport infrastructure is one of the most heavily used in the world. The performance of these networks is critically dependent on the performance of cutting and embankment slopes which make up £20B of the £60B asset value of major highway... Read More about Research-informed design, management and maintenance of infrastructure slopes: development of a multi-scalar approach.

Benchmarking selection of parameter values for the Barcelona basic model (2015)
Journal Article
D’Onza, F., Wheeler, S., Gallipoli, D., Barrera Bucio, M., Hofmann, M., Lloret-Cabot, M., …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

Seven teams took part in a benchmarking exercise on selection of parameter values for the Barcelona Basic Model (BBM) from experimental data on an unsaturated soil. All teams were provided with experimental results from 9 tests performed on a compact... Read More about Benchmarking selection of parameter values for the Barcelona basic model.

Data Acquisition and Control Software for Automated Resistivity Measurements (2014)
Conference Proceeding
Toll, D., & Hassan, A. (2014). Data Acquisition and Control Software for Automated Resistivity Measurements. In D. G. Toll, H. Zhu, A. Osman, W. Coombs, X. Li, & M. Rouainia (Eds.), Information Technology in Geo-Engineering (170-176). https://doi.org/10.3233/978-1-61499-417-6-170

Automated multi-electrode resistivity systems now allow rapid and efficient data acquisition of electrical resistivity measurements to address a wide range of hydrogeological, geotechnical and environmental problems. In this work, a flexible data acq... Read More about Data Acquisition and Control Software for Automated Resistivity Measurements.

Data Acquisition Software for Controlling Serial Ports with Cloud Data Storage (2014)
Conference Proceeding
Asquith, J., & Toll, D. (2014). Data Acquisition Software for Controlling Serial Ports with Cloud Data Storage. In D. G. Toll, H. Zhu, A. Osman, W. Coombs, X. Li, & M. Rouainia (Eds.), Information Technology in Geo-Engineering (163-169). https://doi.org/10.3233/978-1-61499-417-6-163

A common requirement of laboratory and field data collection is for automated data logging software to control instrumentation and report on the results. Large projects may require a range of different instrumentation each with its own preferred meth... Read More about Data Acquisition Software for Controlling Serial Ports with Cloud Data Storage.

Soil atmosphere interactions for analysing slopes in tropical soils (2014)
Conference Proceeding
Toll, D., Rahim, M. M., Karthikeyan, M., & Tsaparas, I. (2014). Soil atmosphere interactions for analysing slopes in tropical soils. In F. Oka, A. Murakami, R. Uzuoka, & S. Kimoto (Eds.), Computer Methods and Recent Advances in Geomechanics (1333-1338)

Modelling of soil-atmosphere interaction for slopes requires a proper understanding of the soil parameters (soil retention curve and the permeability function). This paper reports on numerical investigations of an instrumental residual soil slope in... Read More about Soil atmosphere interactions for analysing slopes in tropical soils.