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Browsing by UP Author "Steyn, Wynand Jacobus Van der Merwe"
Now showing items 1-20 of 57
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Steyn, Wynand Jacobus Van der Merwe; Bean, Willemiena Lodewika; Southern African Transport Conference (32nd : 2013 : Pretoria, South Africa); Minister of Transport, South Africa; Behrens, Roger; Cameron, Bill; Froschauer, Pauline (July 2013)Paper presented at the 32nd Annual Southern African Transport Conference 8-11 July 2013 "Transport and Sustainable Infrastructure", CSIR International Convention Centre, Pretoria, South Africa.
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Steyn, Wynand Jacobus Van der Merwe; Sadzik, E. (SATC, 2007-07)Paper presented at the 26th Annual Southern African Transport Conference 9 - 12 July 2007 "The challenges of implementing policy?", CSIR International Convention Centre, Pretoria, South Africa. ABSTRACT:The Portable Seismic ...
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Steyn, Wynand Jacobus Van der Merwe (SATC, 2007-07)Paper presented at the 26th Annual Southern African Transport Conference 9 - 12 July 2007 "The challenges of implementing policy?", CSIR International Convention Centre, Pretoria, South Africa. ABSTRACT:Over the years the ...
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Steyn, Wynand Jacobus Van der Merwe; Horak, A.B.M.; Horak, Emile; Southern African Transport Conference (31st : 2012 : Pretoria, South Africa); Minister of Transport, South Africa (Document Transformation Technologies, July 2012)Paper presented at the 31st Annual Southern African Transport Conference 9-12 July 2012 "Getting Southern Africa to Work", CSIR International Convention Centre, Pretoria, South Africa.
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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, ...
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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 ...
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Steyn, Wynand Jacobus Van der Merwe; Van Niekerk, Handre; Jacobs, Wietsche M.G.; Jenkins, Kim (Southern African Alliance for Sport Science, Physical Education and Recreation, 2014)Various mountain bike trails exist in South Africa, but their difficulty ratings are generally unknown. By classifying the trails, risk of injury and uncertainty can be limited as information are provided on the difficulty ...
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A comparison between the permanent deformation behaviour of a standard and a rut resistant HMA mix Steyn, Wynand Jacobus Van der Merwe; Denneman, Erik; Mahlangu, S. (SATC, 2008-07)Paper presented at the 27th Annual Southern African Transport Conference 7 - 11 July 2008 "Partnership for research and progress in transportation", CSIR International Convention Centre, Pretoria, South Africa.
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Steyn, Wynand Jacobus Van der Merwe; Maina, J.W. (James); Repsold, Anton (Chinese Society of Pavement Engineering, 2013-07)In most existing pavement design methods, pavements are analyzed using linear elastic multilayer theory, with the assumption that isotropic conditions are present in the structural layers of the pavement section. There are ...
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Steyn, Wynand Jacobus Van der Merwe; Warnich, Janike; Engelbrecht, Japie (Southern African Alliance for Sport Science, Physical Education and Recreation, 2014)Tyre-road rolling resistance is a major factor in the performance of a vehicle. By investigating the rolling resistance, a better understanding of the efficiency of different wheel diameters will develop. A major issue in ...
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Steyn, Wynand Jacobus Van der Merwe; Visser, Alex T.; Southern African Transport Conference (20th : 2001 : Pretoria, South Africa) (SATC, 2001-07)Paper presented at the 20th Annual South African Transport Conference 16 - 20 July 2001 "Meeting the transport challenges in Southern Africa", CSIR International Convention Centre, Pretoria, South Africa. ABSTRACT: Current ...
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Wessels, Illeze; Steyn, Wynand Jacobus Van der Merwe (Taylor and Francis, 2020)Roads need to be continuously monitored and maintained to ensure that they offer a driving surface that effectively address the safety and comfort needs of road users. Well maintained roads are also vital for freight ...
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Beriha, Brundaban; Sahoo, Umesh C.; Steyn, Wynand Jacobus Van der Merwe (Elsevier, 2019-09)Perpetual pavements are in existence since 1960 with satisfactory performance. These pavements are usually designed based on the endurance limit property of bound pavement materials, which is the critical stress or strain, ...
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Steyn, Wynand Jacobus Van der Merwe; Broekman, Andre (ASTM International, 2022)Virtual replicas of infrastructure can be used to run simulations and optimize the construction, management, and maintenance of such assets throughout their entire lifecycle. These digital twins (defined as integrated ...
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Development of a saturation- and stress-dependent chord modulus model for unbound granular material Van Aswegen, Elsabe; Steyn, Wynand Jacobus Van der Merwe; Theyse, Hechter L. (South African Institution of Civil Engineering, 2015-06)Unbound granular material is used in the pavement structure and usually comprises the bulk of the structural and foundation layers of a typical South African pavement. The term unbound granular material refers to the ...
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O'Connell, Johan; Steyn, Wynand Jacobus Van der Merwe; Maina, J.W. (James) (Elsevier, 2024-12)Ageing has a profound effect on pavement performance, especially regarding cracking. Due to budgetary constraints, South Africa has pioneered the use of thin asphalt concrete layers. The research described in this paper ...
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Steyn, Wynand Jacobus Van der Merwe; Haw, M. (SATC, 2005-07)Paper presented at the 24th Annual Southern African Transport Conference 11 - 13 July 2005 "Transport challenges for 2010", CSIR International Convention Centre, Pretoria, South Africa.
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Mshali, M.R.S. (Mike); Steyn, Wynand Jacobus Van der Merwe (Taylor and Francis, 2022)The road network in South Africa, particularly in urban areas, is experiencing a steady increase in traffic volumes and congestion. Speed has a significant effect on the response of flexible pavement systems to traffic ...
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Jordaan, Gerrit Jacobus; Steyn, Wynand Jacobus Van der Merwe (MDPI, 2021-10-18)Nanoscale organofunctional silanes have been developed, tested and successfully applied to protect stone buildings in Europe against climatic effects since the 1860s. The same nanotechnologies can also be used in pavement ...
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Kemp, Lana; Steyn, Wynand Jacobus Van der Merwe; Roux, Michael (South African Institution of Civil Engineering, 2022-09)This paper introduces the application of technology solutions into the realm of bridge inspection methodologies in South Africa, aiming to enhance the current visual bridge inspection methodology. Unmanned Aerial Vehicles ...
Now showing items 1-20 of 57