Boosting soil literacy in schools can help improve understanding of soil/human health linkages in Generation Z (2023)
Journal Article
Johnson, K. L., Stone, W., Dominelli, L., Chivasa, S., Clarke, C. E., Gwandu, T., & Appleby, J. (2023). Boosting soil literacy in schools can help improve understanding of soil/human health linkages in Generation Z. Frontiers in Environmental Science, 10, https://doi.org/10.3389/fenvs.2022.1028839

Soil health underpins ecosystem services like food security and therefore underpins human health. Poor soil health is a global problem which is hindering attempts to deliver the UN’s Sustainable Development Goals. We focus on goals 3 (human health),... Read More about Boosting soil literacy in schools can help improve understanding of soil/human health linkages in Generation Z.

Application of geographical information system (GIS) using artificial neural networks (ANN) for landslide study in Langat Basin, Selangor (2022)
Journal Article
Selamat, S. N., Majid, N. A., Taha, M. R., & Osman, A. (2022). Application of geographical information system (GIS) using artificial neural networks (ANN) for landslide study in Langat Basin, Selangor. IOP Conference Series: Earth and Environmental Science, 1064(1), https://doi.org/10.1088/1755-1315/1064/1/012052

The landslide was recognized as the most common geologic hazard around the world. The assessment of the relationship landslide conditioning factors is a critical step in managing landslide hazards and risks. Several models have been made to develop t... Read More about Application of geographical information system (GIS) using artificial neural networks (ANN) for landslide study in Langat Basin, Selangor.

Centrifuge modelling of an expansive clay profile using artificial fissuring to achieve realistic swell magnitudes in a short timeframe (2022)
Journal Article
Gaspar, T., Jacobsz, S., Smit, G., Gens, A., Toll, D., & Osman, A. (2023). Centrifuge modelling of an expansive clay profile using artificial fissuring to achieve realistic swell magnitudes in a short timeframe. Engineering Geology, 312, Article 106928. https://doi.org/10.1016/j.enggeo.2022.106928

This paper presents the results of a centrifuge study in which swell of an expansive clay profile was induced in the centrifuge. A factor which has previously hindered such research is the time required to induce significant swell in-flight, within a... Read More about Centrifuge modelling of an expansive clay profile using artificial fissuring to achieve realistic swell magnitudes in a short timeframe.

Measurement of pile uplift forces due to soil heave in expansive clays (2022)
Journal Article
da Silva Burke, T. S., Jacobsz, S., Elshafie, M. Z., & Osman, A. S. (2022). Measurement of pile uplift forces due to soil heave in expansive clays. Canadian Geotechnical Journal, 59(12), https://doi.org/10.1139/cgj-2021-0079

Piled foundations are widely used to limit the movement of foundations in expansive clays. These piles are subjected to large uplift forces as the clay swells (and downdrag forces when it shrinks). The appropriate method to estimate these forces is n... Read More about Measurement of pile uplift forces due to soil heave in expansive clays.

Landslide Susceptibility Model Using Artificial Neural Network (ANN) Approach in Langat River Basin, Selangor, Malaysia (2022)
Journal Article
Selamat, S. N., Majid, N. A., Taha, M. R., & Osman, A. (2022). Landslide Susceptibility Model Using Artificial Neural Network (ANN) Approach in Langat River Basin, Selangor, Malaysia. Land, 11(6), Article 833. https://doi.org/10.3390/land11060833

Landslides are a natural hazard that can endanger human life and cause severe environmental damage. A landslide susceptibility map is essential for planning, managing, and preventing landslides occurrences to minimize losses. A variety of techniques... Read More about Landslide Susceptibility Model Using Artificial Neural Network (ANN) Approach in Langat River Basin, Selangor, Malaysia.

A nation that rebuilds its soils rebuilds itself- an engineer's perspective (2022)
Journal Article
Johnson, K. L., Gray, N. D., Stone, W., Kelly, B. F., Fitzsimons, M. F., Clarke, C., …Gwandu, T. (2022). A nation that rebuilds its soils rebuilds itself- an engineer's perspective. Soil security, 7, Article 100060. https://doi.org/10.1016/j.soisec.2022.100060

Nations can build and rebuild degraded soils to help address climate change and potentially improve the nutritional content of food if we change policies that allow the addition of safe mineral and organic wastes to soil. We present a framework that... Read More about A nation that rebuilds its soils rebuilds itself- an engineer's perspective.

Reusing Fe water treatment residual as a soil amendment to improve physical function and flood resilience (2022)
Journal Article
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

Soil degradation is a global challenge that is intrinsically linked to climate change and food security. Soil degradation has many causes, but all degraded soils suffer from poor soil structure. The increasing global production of water treatment res... Read More about Reusing Fe water treatment residual as a soil amendment to improve physical function and flood resilience.

The mechanical properties of a high plasticity expansive clay (2022)
Journal Article
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

The mechanical properties of a high plasticity expansive clay from South Africa are reported. The experimental programme considered wetting after loading tests followed by one-dimensional consolidation and unloading of undisturbed and statically comp... Read More about The mechanical properties of a high plasticity expansive clay.

Waste to resource: use of water treatment residual for increased maize productivity and micronutrient content (2021)
Journal Article
Gwandu, T., Blake, L., Nezomba, H., Rurinda, J., Chivasa, S., Mtambanengwe, F., & Johnson, K. (2022). Waste to resource: use of water treatment residual for increased maize productivity and micronutrient content. Environmental Geochemistry and Health, 44(10), 3359-3376. https://doi.org/10.1007/s10653-021-01100-z

Soil degradation, which is linked to poor nutrient management, remains a major constraint to sustained crop production in smallholder urban agriculture (UA) in sub-Saharan Africa (SSA). While organic nutrient resources are often used in UA to complem... Read More about Waste to resource: use of water treatment residual for increased maize productivity and micronutrient content.

The microbiology of rebuilding soils with water treatment residual co‐amendments: Risks and benefits (2021)
Journal Article
Stone, W., Lukashe, N. S., Blake, L. I., Gwandu, T., Hardie, A. G., Quinton, J., …Clarke, C. E. (2021). The microbiology of rebuilding soils with water treatment residual co‐amendments: Risks and benefits. Journal of Environmental Quality, 50(6), 1381-1394. https://doi.org/10.1002/jeq2.20286

Water treatment residuals (WTR) are sludges from the potable water treatment process, currently largely destined for landfill. This waste can be diverted to rebuild degraded soils, aligning with the UN's Sustainable Development Goals 12 (Consumption... Read More about The microbiology of rebuilding soils with water treatment residual co‐amendments: Risks and benefits.

Rainfall induced deformation on unsaturated collapsible soils (2021)
Conference Proceeding
Moghaddasi, H., Osman, A., Toll, D., & Khalili, N. (2022). Rainfall induced deformation on unsaturated collapsible soils. In E. Tutumluer, S. NazarianImad, & A. Qamhia (Eds.), Advances in Transportation Geotechnics IV (447-456). https://doi.org/10.1007/978-3-030-77238-3_34

The stability of transportation infrastructure can be affected by seasonal rainfall infiltrated adjacent excavations and natural slopes. The paper investigates the rainfall-induced deformation of an anchored excavation constructed in unsaturated soil... Read More about Rainfall induced deformation on unsaturated collapsible soils.

Piling 2020 (2021)
Book
Higgins, K., Ainsworth, Y., Toll, D., & Osman, A. (Eds.). (2021). Piling 2020. ICE Publishing

A Computational Model for Simulation of Shallow Water Waves by Elastic Deformations in the Topography (2021)
Journal Article
Al-Ghosoun, A., Osman, A., & Seaid, M. (2021). A Computational Model for Simulation of Shallow Water Waves by Elastic Deformations in the Topography. Communications in computational physics, https://doi.org/10.4208/cicp.oa-2020-0098

We propose a coupled model to simulate shallow water waves induced by elastic deformations in the bed topography. The governing equations consist of the depth-averaged shallow water equations including friction terms for the water freesurface and the... Read More about A Computational Model for Simulation of Shallow Water Waves by Elastic Deformations in the Topography.

A hybrid finite volume/finite element method for shallow water waves by static deformation on seabeds (2020)
Journal Article
Al-Ghosoun, A., Osman, A., & Seaid, M. (2021). A hybrid finite volume/finite element method for shallow water waves by static deformation on seabeds. Engineering Computations, 38(5), 2434-2459. https://doi.org/10.1108/ec-05-2020-0275

Purpose The purpose of this study is twofold: first, to derive a consistent model free-surface runup flow problems over deformable beds. The authors couple the nonlinear one-dimensional shallow water equations, including friction terms for the water... Read More about A hybrid finite volume/finite element method for shallow water waves by static deformation on seabeds.

Common Language of Sustainability for Built Environment Professionals—The Quintuple Helix Model for Higher Education (2020)
Journal Article
Crilly, M., Vemury, C. M., Humphrey, R., Rodriguez, S., Crosbie, T., Johnson, K., …Heidrich, O. (2020). Common Language of Sustainability for Built Environment Professionals—The Quintuple Helix Model for Higher Education. Energies, 13(22), Article 5860. https://doi.org/10.3390/en13225860

One of the repeating themes around the provision of the knowledge and skills needed for delivering sustainable communities is the idea of a “common language” for all built environment professionals. This suggestion has been repeated regularly with ea... Read More about Common Language of Sustainability for Built Environment Professionals—The Quintuple Helix Model for Higher Education.

Water retention and characteristic curves representing tropical clay soils from Africa (2020)
Conference Proceeding
Alhaj, K., Biscontin, G., Elshafie, M., & Osman, A. (2020). Water retention and characteristic curves representing tropical clay soils from Africa. In R. Cardoso, C. Jommi, & E. Romero (Eds.), 4th European Conference on Unsaturated Soils (E-UNSAT 2020) proceedings. https://doi.org/10.1051/e3sconf/202019501019

Soil water retention curves (SWRCs) form an essential component of frameworks coupling the hydromechanical behaviour of unsaturated soils. The curves describe how suction changes with variables such as degree of saturation, void ratio and volumetric/... Read More about Water retention and characteristic curves representing tropical clay soils from Africa.

The ABC of Soil Literacy - Evidence from Ghana, South Africa and Zimbabwe (2020)
Report
Johnson, K., Philip, D., & Engels, C. (2020). The ABC of Soil Literacy - Evidence from Ghana, South Africa and Zimbabwe. [No known commissioning body]

Climate change and soil health are intimately linked, as reflected in the United Nation’s Sustainable Development Goal (SDG) 15. Land degradation is responsible for a significant proportion of all global greenhouse gas emissions (WGII, IPCC, 2007), t... Read More about The ABC of Soil Literacy - Evidence from Ghana, South Africa and Zimbabwe.

Characteristics and Mechanisms of Pb(II) Sorption onto Fe-rich waste Water Treatment Residue (WTR): A potential sustainable Pb immobilisation technology for soils (2020)
Journal Article
Findlay, N. C., Peacock, C. L., Hudson-Edwards, K. A., & Johnson, K. L. (2021). Characteristics and Mechanisms of Pb(II) Sorption onto Fe-rich waste Water Treatment Residue (WTR): A potential sustainable Pb immobilisation technology for soils. Journal of Hazardous Materials, 402, Article 123433. https://doi.org/10.1016/j.jhazmat.2020.123433

Pb contamination of soils is a global problem. This paper discusses the ability of an Fe-rich waste, water treatment residual (WTR), to adsorb Pb(II). This was investigated using batch sorption experiments, X-ray diffraction, electron microprobe micr... Read More about Characteristics and Mechanisms of Pb(II) Sorption onto Fe-rich waste Water Treatment Residue (WTR): A potential sustainable Pb immobilisation technology for soils.

Soil water retention curves representing tropical clay soils from Africa (2019)
Conference Proceeding
Alhaj, K., Biscontin, G., Elshafie, M., & Osman, A. (2019). Soil water retention curves representing tropical clay soils from Africa.

A simple model for tertiary creep in geomaterials (2019)
Journal Article
Osman, A., Birchall, T., & Rouainia, M. (2020). A simple model for tertiary creep in geomaterials. Geotechnical Research, 70(1), 3-59. https://doi.org/10.1680/jgere.19.00025

This paper presents a constitutive modelling approach to the viscoplastic-damage behaviour of geomaterials. This approach is based on the hyperelasticity framework where the entire constitutive behaviour is derived from only two scalar potentials: a... Read More about A simple model for tertiary creep in geomaterials.