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Browsing Research Articles (Civil Engineering) by UP Author "Jacobsz, Schalk Willem"
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Osman, Ashraf S.; Jacobsz, Schalk Willem
(Elsevier, 2019-09)
The trapdoor problem is a useful model to understand the stress distribution around geo-structures. This paper focuses on evaluating the conditions of maximum arching (minimum loads on trapdoors) developing during the ...
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Gaspar, Tiago Alexandre Valentim; Vandoorne, Rick; Jacobsz, Schalk Willem; Heymann, Gerhard; Grabe, Petrus Johannes
(South African Institution of Civil Engineering, 2021-04)
In recent years, technological advancements
in the field of unsaturated soil mechanics
have helped improve understanding in this
field for both researchers and engineering
practitioners. Gaspar & Jacobsz (2019) ...
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Van Dyk, C.; Jacobsz, Schalk Willem
(Springer, 2016-10)
Sinkholes can occur on land underlain by dolomite and cause substantial damage to buildings and even loss of
life. More than four million people work or reside on dolomite land in South Africa and it is therefore important
to ...
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Gaspar, Tiago Alexandre Valentim; Jacobsz, Schalk Willem
(ASTM International, 2021-05)
The tensile strength of soil is often neglected. Because of the presence of matric suction,
unsaturated soils may have substantial tensile strengths with implications for a range of geotechnical
problems, such as slope ...
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Charles, W.W.; Crous, Petrus A.; Jacobsz, Schalk Willem
(American Society of Civil Engineers, 2023-09)
Tailings dams have relatively high failure rates throughout the world and the consequences of these failures often result in
significant loss of life and damage to the environment and property. However, the triggers and ...
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Jacobsz, Schalk Willem
(South African Institution of Civil Engineering, 2012-04)
No abstract available.
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Jacobsz, Schalk Willem
(South African Institution of Civil Engineering, 2013-04)
This paper describes a physical model of a soil nail retained excavation face which was tested in the new geotechnical centrifuge at the University of Pretoria. As centrifuge modelling is new in South Africa, a short ...
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Gaspar, Tiago Alexandre Valentim; Jacobsz, Schalk Willem; Smit, G.; Gens, A.; Toll, D.G.; Osman, A.S.
(Elsevier, 2023-01)
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 ...
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Gaspar, Tiago Alexandre Valentim; Jacobsz, Schalk Willem; Smit, G.; Osman, A.S.
(Canadian Science Publishing, 2024-01)
A study aimed towards assessing the variation in shaft capacity of piled foundations in swelling clays is presented. At the clay's in-situ water content, the results of pull-out tests on short-length piles revealed no ...
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Vorster, P.; Grabe, Petrus Johannes; Jacobsz, Schalk Willem
(Southern African Institute for Industrial Engineering, 2017-09)
With past embankment failures on the heavy haul coal export railway line between Ermelo and
Richards Bay in South Africa, a study was conducted focusing on the modelling of embankments
in a geotechnical centrifuge. This ...
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Potgieter, Jean; Jacobsz, Schalk Willem
(South African Institution of Civil Engineering, 2019-12)
Soil-nails and anchors as means of lateral support in surface excavations require stability
analyses as part of design. Generally, the acceptance criterion is some arbitrary ‘factor of
safety’ which can be routinely ...
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Kearsley, Elsabe P.; Jacobsz, Schalk Willem
(EDP Sciences, 2018)
Reinforced concrete is the most widely used construction material and thus effective condition assessment of reinforced concrete elements forms a significant part of structural health monitoring. An effective structural ...
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Braun, Kirsten Theresia; Markou, George; Jacobsz, S.W. (Schalk Willem); Calitz, D.
(Elsevier, 2024-06)
The design of pile foundations that are expected to develop significant lateral loading is a complex procedure that requires the development of objective and accurate design formulae that will not be based on semi-empirical ...
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Ravjee, Sachin; Jacobsz, Schalk Willem; Wilke, Daniel Nicolas; Govender, Nicolin
(Springer, 2018-11)
The discrete element method, implemented in a modular GPU based framework that supports polyhedral shaped particles (Blaze-DEM), was used to investigate effects of particle shape on backfill response behind integral bridge ...
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Schoeman, Nicholas Kyle; Jacobsz, Schalk Willem; Kearsley, Elsabe P.
(Southern African Institute of Mining and Metallurgy, 2022-11)
A physical modelling approach was adopted to simulate the process of cave mining propagation at
various horizontal to vertical stress state ratios, and image data was captured and used to characterize
the resulting failure ...
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Van Eeden, S.J.; Jacobsz, Schalk Willem; Rust, M.; Rust, Eben
(South African Institution of Civil Engineering, 2016-03)
Dormant tailings storage facilities (TSFs) have negative effects on their surrounding
environments and communities. This study is aimed at determining the financial and practical
feasibility of generating energy from the ...
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Jacobsz, Schalk Willem; Narainsamy, Yashay
(Southern African Institute of Mining and Metallurgy, 2022-06)
Several high-impact tailings dam failures around the world in recent years have placed a renewed focus
on the stability of tailings dams and pointed to potential shortcomings in traditional drained design
and safety ...
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Potgieter, Jean; Jacobsz, Schalk Willem
(South African Institution of Civil Engineering, 2018-07)
Soil-nails and anchors as means of lateral
support in surface excavations require
stability calculations during design.
Generally, the acceptance criterion for
such calculations is some arbitrary “factor
of safety” (FoS).
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Broekman, Andre; Jacobsz, Schalk Willem; Louw, Hendrik; Kearsley, Elsabe P.; Gaspar, Tiago Alexandre Valentim; Da Silva Burke, Talia Simone
(Elsevier, 2020-10)
Geotechnical centrifuges are valuable instruments for physical modelling of complex
geotechnical problems in a controlled laboratory setting. In comparison to full-scale testing, scaled models are cost effective to construct ...
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Cumming-Potvin, D.; Wesseloo, J.; Jacobsz, Schalk Willem; Kearsley, Elsabe P.
(Southern African Institute of Mining and Metallurgy, 2016-08)
The Duplancic model of caving is widely accepted in industry and is the
framework within which most monitoring and numerical modelling results
in caving mines are interpreted. As a result, the damage profile ahead of
the ...