Browsing Research Articles (Civil Engineering) by Title

Browsing Research Articles (Civil Engineering) by Title

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  • The behaviour of a reinforced soil mattress spanning a cavity modelled in a geotechnical centrifuge 
    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 ...
  • Behaviour of ultra-thin continuously reinforced concrete pavements under moving axle loads 
    Kearsley, Elsabe P.; Smit, Martha S. (Taylor and Francis, 2023)
    Concrete pavements are typically considered to be rigid pavements and are designed using principles based on the beam-on-elastic support equations as derived by Westergaard in 1926. Ultra-Thin Continuously Reinforced ...
  • Benchmarking the structural condition of flexible pavements with deflection bowl parameters 
    Horak, Emile (South African Institution of Civil Engineering, 2008-06)
    The falling weight deflectometer (FWD) is used worldwide as an established, valuable, nondestructive road testing device for pavement structural analyses. The FWD is used mostly for rehabilitation project level design ...
  • Bloemwater conduit hydropower plant launched 
    Van Dijk, Marco; Kgwale, Mokutu; Bhagwan, Jay; Loots, Ione (South African Institution of Civil Engineering, 2015-06)
    On 31 March 2015 the Minister of Water and Sanitation, Nomvula Mokonyane, unveiled Bloemwater's conduit hydropower facility at the Brandkop Reservoir, and celebrated the major scientific and engineering achievements made ...
  • Bloemwater head office is going green 
    Kgwale, Mokutu; Van Dijk, Marco; Bhagwan, Jay (South African Institution of Civil Engineering, 2013-08)
    British Prime Minister Winston Churchill stated the following in his speech The Locust Years in November 1936 to the House of Commons: The era of procrastination, of half-measures, of soothing and baffling expedients, of ...
  • Bracing of timber roofs 
    Burdzik, W.M.G.; Dekker, N.W. (South African Institution of Civil Engineering, 1999)
    Problems attributed to the bracing of timber roofs have necessitated a fresh look at the bracing criterion given in the timber design code, SABS 0163 (1994). The difference between bracing provided for stability of the ...
  • Brazilian tensile strength test conducted on ductile unsaturated soil samples 
    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 ...
  • The buckling resistance of hollow circular members with flattened end-connections 
    Dekker, N.W. (South African Institution of Civil Engineering, 2002)
    Circular hollow sections are commonly used in lattice towers. The geometry of hollow circular sections provides particularly effective compression members. Fully developed welded endconnections are generally considered ...
  • Case study – testing of geogrid at Exxaro Coal Mpumalanga and implications for future use 
    Van Aswegen, Francois; Rautenbach, Reinard; Gomes, Desiree; De Bruyn, Frederick; Kamper, Maarten (South African Institution of Civil Engineering, 2019-07)
    In August 2017 GIBB (Pty) Ltd was requested by Exxaro Coal Mpumalanga to conduct a detail design in order to upgrade one of their existing gravel access roads to surface standard at Matla Mine in Kriel, Mpumalanga. The ...
  • Causes of delay in road construction projects in Malawi 
    Kamanga, Moses; Steyn, Wynand Jacobus Van der Merwe (South African Institution of Civil Engineering, 2013-10)
    A study was conducted to identify the causes of delay in completing road construction projects in Malawi. A literature review was done which yielded 72 typical causes of delay, and a questionnaire was sent to client, ...
  • Centrifuge and numerical modeling of liquefied flow and nonliquefied slide failures of tailings dams 
    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 ...
  • A centrifuge for TUKS 
    Jacobsz, Schalk Willem (South African Institution of Civil Engineering, 2012-04)
    No abstract available.
  • Centrifuge modelling of a soil nail retaining wall 
    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 ...
  • Centrifuge modelling of piled foundations in swelling clays 
    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 ...
  • Centrifuge modelling of railway embankments under static and cyclic loading 
    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 ...
  • Challenges confronting road freight transport and the use of vehicle-pavement interaction analysis in addressing these challenges 
    Steyn, Wynand Jacobus Van der Merwe; Monismith, C.L.; Nokes, W.A.; Harvey, J.T.; Holland, T.J.; Burmas, N. (South African Institution of Civil Engineering, 2012-04)
    Traditional arguments for maintaining riding quality of pavement are expanded in this paper to examine the effects of deteriorating riding quality on vehicle operating costs, freight damage and logistics. The objectives ...
  • Characterisation of rigid polyurethane foam‑reinforced ballast through cyclic loading box tests 
    Du Plooy, R.F.; Grabe, Petrus Johannes (South African Institution of Civil Engineering, 2017)
    As train speeds and heavy haul axle loads constantly increase due to market demands, so do the stresses and strains experienced by track structures. This is especially true for track transitions that generate high dynamic ...
  • Characterisation of the hydration products of a chemically and mechanically activated high coal fly ash hybrid cement 
    Du Toit, Grizelda; Van der Merwe, E.M. (Elizabet Margaretha); Kruger, Richard A.; McDonald, James M.; Kearsley, Elsabe P. (MDPI, 2022-01-27)
    Cement companies are significant contributors of the planet’s anthropogenic CO2 emissions. With increased awareness of the substantial volume of CO2 emissions from cement production, a variety of mitigation strategies ...
  • Chemical acceleration of a neutral granulated blast-furnace slag activated by sodium carbonate 
    Kovtun, Maxim; Kearsley, Elsabe P.; Shekhovtsova, Julia (Elsevier, 2015-06)
    This paper presents results of a study on chemical acceleration of a neutral granulated blast-furnace slag activated using sodium carbonate. As strength development of alkali-activated slag cements containing neutral GBFS ...
  • Chemical and mechanical activation of hybrid fly ash cement 
    Du Toit, Grizelda; Kearsley, Elsabe P.; Mc Donald, James M.; Kruger, Richard A.; Van der Merwe, E.M. (Elizabet Margaretha) (Thomas Telford, 2018)
    Hybrid fly ash cement is a binder with a composition between that of pozzolanic fly ash cement and alkali-activated fly ash cement. Its production requires less cement clinker than ordinary Portland cement, facilitating ...