Browsing by UP Author "Visser, Alex T."

Browsing by UP Author "Visser, Alex T."

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  • The application of foamed tar technology to labour intensive construction of low volume roads 
    Visser, Alex T.; Morton, Bruce S.; Horak, Emile; Southern African Transport Conference (21st : 2002 : Pretoria, South Africa) (SATC, 2002-07)
    Paper presented at the 21st Annual South African Transport Conference 15 - 18 July 2002 "Towards building capacity and accelerating delivery", CSIR International Convention Centre, Pretoria, South Africa.
  • Bitumen rubber seal behaviour assessment 
    Visser, Alex T.; Milne, T.I.; Southern African Transport Conference (30th : 2011 : Pretoria, South Africa); Transportation Research Board of the National Academies (TRB); Minister of Transport, South Africa (Document Transformation Technologies, 2011-07)
    Paper presented at the 30th Annual Southern African Transport Conference 11-14 July 2011 "Africa on the Move", CSIR International Convention Centre, Pretoria, South Africa.
  • Comparative study of non-destructive field testing devices on BSM- emulsion 
    Visser, Alex T.; Guiamba, D.; Horak, Emile; Southern African Transport Conference (29th : 2010 : Pretoria, South Africa); Transportation Research Board of the National Academies (TRB) (Document Transformation Technologies, 2010-08)
    Paper presented at the 29th Annual Southern African Transport Conference 16 - 19 August 2010 "Walk Together", CSIR International Convention Centre, Pretoria, South Africa. ABSTRACT:
  • Comparison of bitumen–rubber use in extreme conditions in Russia and South Africa 
    Visser, Alex T.; Duhovny, George S.; Sachkova, Alice V. (Taylor and Francis, 2017)
    The development of the use of crumb rubber from used tyres in asphalt started in the USSR during the 1960s independently and in parallel with the research in the USA and Western World during the 1970s. The result is that ...
  • A comparison of the HDM-4 with the HDM-III on a case study in Swaziland 
    Pienaar, P.A. (Petrus); Visser, Alex T.; Dlamini, L.M. (SATC, 2000-07)
    Paper presented at the South African Transport Conference 17 - 20 July 2000 "Action in transport for the new millennium", CSIR International Convention Centre, Pretoria, South Africa.
  • Consideration of pavement roughness effects on vehicle-pavement interaction 
    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 ...
  • A cumulative risk and sustainability index for pavements 
    Blaauw, Sheldon Alfred; Maina, J.W. (James); Grobler, Louis J.; Visser, Alex T. (Elsevier, 2022-04)
    Pavement sustainability is measured using various methodologies which often focus on only certain aspects of sustainability. Methods to quantify and unify holistic sustainability in terms of economic, environmental and ...
  • Definition and application of a cohesive crack model allowing improved prediction of the flexural capacity of high-performance fibre-reinforced concrete pavement materials 
    Denneman, Eric; Kearsley, Elsabe P.; Visser, Alex T. (South African Institution of Civil Engineering, 2012-10)
    In conventional concrete pavement design methods the design parameters are determined using linear elastic analysis. Concrete is subject to significant size effect and as a result linear elastic design concepts, such as ...
  • The development of a rotational shear device for evaluating erodibility of stabilised subbases 
    Visser, Alex T.; Ras, Elsabe (SATC, 2004-07)
    Paper presented at the 23rd Annual Southern African Transport Conference 12 - 15 July 2004 "Getting recognition for the importance of transport", CSIR International Convention Centre, Pretoria, South Africa. Soil properties ...
  • The development of analytical models for a pavement management system in Mozambique : a knowledge-based expert system approach 
    Visser, Alex T.; Camba, J.C.M.; Southern African Transport Conference (21st : 2002 : Pretoria, South Africa) (SATC, 2002-07)
    Paper presented at the 21st Annual South African Transport Conference 15 - 18 July 2002 "Towards building capacity and accelerating delivery", CSIR International Convention Centre, Pretoria, South Africa.
  • Discrete fracture in high performance fibre reinforced concrete materials 
    Denneman, Erik; Wu, Rongzong; Kearsley, Elsabe P.; Visser, Alex T. (Elsevier, 2011-07)
    In this paper a simple, but effective methodology to simulate opening mode fracture in high performance fibre reinforced concrete is presented. To obtain the specific fracture energy of the material, load-deflection ...
  • Durability and cost effectiveness of road marking paint 
    Visser, Alex T.; De Witt, A.J.; Smith, R.A.F. (SATC, 2000-07)
    Paper presented at the South African Transport Conference 17 - 20 July 2000 "Action in transport for the new millennium", CSIR International Convention Centre, Pretoria, South Africa.
  • The effect of rehabilitation on the stiffness of pavement layers 
    Visser, Alex T.; De Bruin, P.W. (SATC, 2000-07)
    Paper presented at the South African Transport Conference 17 - 20 July 2000 "Action in transport for the new millennium", CSIR International Convention Centre, Pretoria, South Africa.
  • Evaluation of sustainability of low-volume roads treated with nontraditional stabilizers 
    Steyn, Wynand Jacobus Van der Merwe; Visser, Alex T. (National Academy of Sciences, 2011-07)
    Stabilization of unpaved (mostly low volume) roads using non-traditional stabilizers has received attention over the last number of years as various types of these stabilizers are developed and become available. Evaluation ...
  • Evaluation of the strength behaviour of unpaved road material treated with electrochemical-based non-traditional soil stabilisation additives 
    Moloisane, R.J.; Visser, Alex T. (South African Institution of Civil Engineering, 2014-04)
    Travel along unpaved roads is not always assured, because of their low standards, poor riding quality, impassability in wet weather, and the danger in the quantity of dust that is generated by moving vehicles and wind. ...
  • Flexible pavement performance and life cycle assessment incorporating climate change impacts 
    Blaauw, Sheldon Alfred; Maina, J.W. (James); Mturi, Georges A.J.; Visser, Alex T. (Elsevier, 2022-04)
    Construction, maintenance and demolition of pavements are often considered the only activities impacting the environment. This paper shows that user emissions, influenced by factors such as road roughness and climate change, ...
  • Flexural behaviour of lightly cement stabilised materials : South Africa and Brazil 
    Fedrigo, William; Visser, Alex T.; Steyn, Wynand Jacobus Van der Merwe; Núñeza, Washington Peres (Taylor and Francis, 2021)
    This paper focuses on the flexural behaviour of lightly cement stabilised materials. An experimental programme was developed to analyse the effects of compaction method, test setup and displacement rate on the static ...
  • Fracture mechanics in pavement design 
    Denneman, Erik; Kearsley, Elsabe P.; Visser, Alex T.; Wu, Rongzong; Southern African Transport Conference (28th : 2009 : Pretoria, South Africa) (Document Transformation Technologies, 2009-07-06)
    Paper presented at the 28th Annual Southern African Transport Conference 6 - 9 July 2009 "Sustainable Transport", CSIR International Convention Centre, Pretoria, South Africa.
  • Haul road defect identification using measured truck response 
    Hugo, D.; Heyns, P.S. (Philippus Stephanus); Thompson, R.J.; Visser, Alex T. (Elsevier, 2008-06)
    Current management techniques for the aintenance of mine haul roads, such as ad hoc blading, scheduled blading and even maintenance management systems, have shortcomings in complex mining environments. This paper investigates ...
  • Haul roads can make money! 
    Visser, Alex T. (Southern African Institute of Mining and Metallurgy, 2015-11)
    Almost 20 years have passed since the cutting-edge research by Thompson and Visser on the design and management of opencast mine haul roads was conducted in South Africa. This system is based on three principles, namely ...