Geotechnical and Transport Engineering

Geotechnical engineering is the branch of civil engineering concerned with the engineering behaviour of earth materials. Transport Engineering is the application of science and technology to the safe, efficient and sustainable movement of people and goods. It encompasses research, policy development, planning, design, implementation, operation and management of all modes of travel.

Geotechnical Engineering and Transportation Engineering are specialist fields grouped within one division. The geotechnical and bitumen laboratories are well equipped for both research and specialist services to industry.

Geotechnics research currently focuses primarily on the upper quaternary sands of the Cape Flats and its engineering geological characterisation in terms of its compressibility, shear strength, hydraulic conductivity and volumetric behaviour during shear (liquefaction potential). Ongoing geological investigations at Matjiesfontein are also are carried out in support of the construction of the Space Geodesy Observatory.

Within Transportation Engineering, specialist areas are Pavement Engineering, Traffic & Transportation Engineering (including Intelligent Transport Systems (ITS)) and Traffic Safety Engineering.

Student-orientated research in pavement engineering includes accelerated testing of asphalt including MMLS testing and beam fatigue tests, environment-friendly bitumen stabilised materials researched using triaxial and fatigue tests, development of a performance-related seal design method for bitumen and modified binders, and a mix design and analysis system of asphalt bases.

Road Safety research includes road crash causation, the influence of human factors, the role of geometric design, speed, public transport safety, and pedestrian safety factors. Research in ITS focuses on public transport user information, multimodal data base development, appropriate technology applications in developing countries and freeway management information applications for travel time estimation and incident management systems.

The Institute for Integrated Transport Technology (ITT), directed by Prof Marion Sinclair, serves as a regional centre for research and development projects in transportation. All aspects of transport are covered with emphasis on Pavements, Economics, Safety, Energy, Risk, Construction and Information.

The SANRAL Chair in Pavement Engineering, held by Prof Kim Jenkins, engages in undergraduate and postgraduate education; development and management of the asphalt and pavements laboratories; and study guidance for postgraduate students, achieved through short courses for practitioners; capacity building in pavement engineering at Universities of Technology; liaison and cooperation with SANRAL Materials Cluster, CSIR and other universities as well as specialist consulting work.

2019

Journal Article

ASANTE SY, FOUCHÉ N. The collapsible nature of residual granite soils of the Cape Granite Suite. Journal of the South African Institution of Civil Engineering 2019; 61(2):57-63.

BASSAT TB, SHINAR DS, CAIRD JK, DEWAR RE, LEHTONEN E, SALMON PM, SINCLAIR MD, SUMMALA H, ZAKOWSA L, LIBBERMAN G. Expert evaluation of traffic signs: Conventional vs. alternative designs. ERGONOMICS 2019; 62(6):734-747.

BREDENHANN SJ, MYBURGH PA, JENKINS KJ, O CONNELL J, ROWE G, D ANGELO J. Implementation of a performance-grade bitumen specification in South Africa. Journal of the South African Institution of Civil Engineering 2019; 61(3):20-31.

BRUWER MM, BESTER CJ, VILJOEN ES. The influence of gradient on saturation flow rate at signalised intersections. Journal of the South African Institution of Civil Engineering 2019; 61(2):21-27.

MACROBERT CJ, BERNSTEIN GS, NCHABELENG MM. Dynamic Cone Penetrometer (DCP) Relative Density Correlations for Sands. Soils and Rocks 2019; 42(2):201-207.

MACROBERT CJ. A review of impacts associated with infrastructure news coverage South Africa. South African Geographical Journal 2019; 101:1-3.

MACROBERT CJ. Discussion of “liquefaction resistance and steady-state characterization of shallow soils within the christchurch central business district” by Christopher S. Markham, Jonathan D. Bray, Misko Cubrinovski, and Michael F. Riemer. Journal of Geotechnical and Geoenvironmental Engineering – ASCE 2019; 145(9):1-2.

TEBALDI G, DAVE E V, FALCHETTO AC, HUGENER M, PERRATON D, GRILLI A, PRESTI DL, PASETTO M, LOIZOS A, JENKINS KJ, APEAGYEI A, GRENFELL J, BOCCI M. Recommendation of RILEM TC237-SIB on fragmentation test for recycled asphalt. Materials and Structures/Materiaux et Constructions 2019; 52(4):1-6.

International Proceedings

AKOKU EBOT ENO AKPA N, BOOYSEN MJ, SINCLAIR MD. Fuel savings as an incentive for speed compliance in the informal public transport industry in South Africa. 2019 IEEE Intelligent Transportation Systems Conference (ITSC), Auckland, New Zealand, IEEE 2019: 492-496.

BIERMAN CR, JENKINS KJ, RUDMAN CE. A Design Function for bitumen stabilised materials performance based on laboratory and field evaluation. 8th EATA Conference 2019, Granada, Spain, Taylor & Francis 2019: 1.

BREDENHANN SJ, JENKINS KJ. Bitumen Rubber Binder in the South African Performance – Grade Specification. CAPSA Conference 2019, Sun City, South Africa, Media Partners 2019: 1-22.

National Proceedings

DOLLIE T, SINCLAIR MD. The use of hard shoulders as a turning lane: A safety evaluation. SATC 2019, Pretoria, South Africa, 000000000 2019: 1-12.

ENGELBRECHT F, JENKINS KJ, GERBER JAK. The effect of ageing on bituminous seal binder rheology. CAPSA Conference 2019, Sun City, South Africa, Media Partners 2019: 260-276.

GEORGE TB, ANOCHIE-BOATENG J.K, JENKINS KJ, VAN DE VEN M.F.C. Evaluating the Moisture Susceptibility of Ht-Mix Asphalt with recycled crushed Glass. CAPSA Conference 2019, Sun City, South Africa, Media Partners 2019: 561-579.

GERBER JAK, BREDENHANN SJ, JENKINS KJ, VAN ZYL S, ENGELBRECHT F. Formulating a Master Curve Using one DSR Isotherm and BBR Data. 12th Conference on Asphalt Pavements for South Africa, Sun City, South Africa, Media Partners 2019: 200-227.

GOOSEN ES, JENKINS KJ. Extraction and Recovery of Bituminous from Chip Seal Samples. CAPSA Conference 2019, Sun City, South Africa, Media Partners 2019: 277-298.

HEYNS C, BRUWER MM. trip Patterns at Primary schools. SATC 2019, Pretoria, South Africa, 000000000 2019: 1-14.

JENKINS KJ, COLLINGS D, GREYLING AH. TG2 (2019) removes barriers and elevates the performance of Bitumen stabilised materials (BSMs). CAPSA Conference 2019, Sun City, South Africa, Media Partners 2019: 655-674.

KAHAAR MN, JENKINS KJ, BREDENHANN SJ. Storage Stability Evaluation of Homogenous Polymer Modified Binders. CAPSA 2019, Sun City, South Africa, Media Partners 2019: 299-320.

KANIME TTE, CROUKAMP L, JACOBSZ SW, DE GRAAF PJH. Implementation of response – surface FORM in slope stability analysis. 17th African Regional Conference on Soil Mechanics and Geotechnical Engineering, Cape Town, South Africa, ISSMGE 2019: 655-660.

MACROBERT CJ. A Comparison of approaches to determine bottom liner stability. In: Jacobsz SW (ed.) 17th International African Regional Conference on Soil Mechanics and Geotechnical Engineering, Cape Town, South Africa, ISSMGE 2019: 390-395.

MACROBERT CJ. Challenge to Judgement. In: Jacobsz SW (ed.) 17th African Regional Conference on Soil Mechanics and Geotechnical Engineering, Cape Town, South Africa, ISSMGE 2019: 59-67.

MAZIBUKO NMA, RUDMAN CE, JENKINS KJ. Performance of Bitumen Stabilised Mateirals using Recycled Concrete Aggregate. CAPSA Conference 2019, Sun City, South Africa, Media Partners 2019: 1036-1050.

NEL CLM, GREYLING AH, JENKINS KJ, VAN ZYL GD, BOWKER IM. Towards the development of grey water resistant asphalt. CAPSA Conference 2019, Sun City, South Africa, Media Partners 2019: 609-634.

PIENAAR E, RUDMAN CE, JENKINS KJ, MARRADI A, BIANCHI L. Influence of On-Paver Spraybar Technology on Bond Strength of Asphalt and Pavement Life. CAPSA Conference 2019, Sun City, South Africa, Media Partners 2019: 979-998.

RUDMAN CE, JENKINS KJ, TREDOUX C, BREDENKAMP Z. A study of change in the response of recycled concrete aggregate used in pavements layers when self-cementation occurs. CAPSA Conference 2019, Sun City, South Africa, Media Partners 2019: 1083-1100.

SINCLAIR MD, BRUWER MM. The impact of prior transport – based experiences on academic interest and performance – case study of undergraduate students in Transport Science Modules at Stellenbosch University. REES 2019, Cape Town, South Africa, REES 2019: 1-10.

THOMAS MP, JENKINS KJ, RUDMAN CE. Performance Testing of Enrobe a Module Eleve. CAPSA Conference 2019, Sun City, South Africa, 000000000 2019: 635-654.

VENTER K, SINCLAIR MD. Novice Driver training within the South African NRSS 2016-2030. SATC 2019, Pretoria, South Africa, 000000000 2019: 1-12.

2018

Journal Article

GERBER JAK, JENKINS KJ, ENGELBRECHT F. FEM SEAL-3D: development of 3D finite element chip seal models. International Journal of Pavement Engineering 2018; 19:1-10.

GERBER JAK, JENKINS KJ. Finite element modelling and damage quantification of chip seals. Road Materials and Pavement Design 2017; 18(2):350-361.

GUATIMOSIM F, VASCONCELOS KL, BERNUCCI LLB, JENKINS KJ. Laboratory and field evaluation of cold recycling mixture with foamed asphalt. Road Materials and Pavement Design 2018; 19(2):385-399.

TEBALDI G, DAVE E V, FALCHETTO AC, HUGENER M, PERRATON D, GRILLI A, PRESTI DL, PASETTO M, LOIZOS A, JENKINS KJ, APEAGYEI A, GRENFELL J, BOCCI M. Recommendation of RILEM TC237-SIB on cohesion test of recycled asphalt. Materials and Structures/Materiaux et Constructions 2018; TC237(51):117-125.

TEBALDI G, DAVE E V, FALCHETTO AC, HUGENER M, PERRATON D, GRILLI A, PRESTI DL, PASETTO M, LOIZOS A, JENKINS KJ, APEAGYEI A, GRENFELL J, BOCCI M. Recommendation of RILEM TC237-SIB: protocol for characterization of recycled asphalt (RA) materials for pavement applications. Materials and Structures/Materiaux et Constructions 2018; 51:117, 6 pages.

International proceedings

BRUWER MM, WEICHENMEIER F. Adaptive signal control using Ptv Balance and Ptv epics for application in a developing country. 8th African Transportation Technology Transfer Conference, Livingstone, Zambia, ASANRA 2017: 97-109.

JENKINS KJ, COLLINGS D, GREYLING AH. Performance of bitumen stabilised materials BSMs-Laboratory technology development and validation projects in the middle east. In: Masad E, Bhasin A, Scarpas T, ET AL (eds.) International Conference on Advances in Materials and Pavement Performance Prediction (AM3P 2018)/Advances in Materials and Pavement Prediction, London, United Kingdom, CRC Press 2018: 610-615.

SINCLAIR MD, DENNYSEN GS. Evaluation of the safety benefits of the exclusive and concurrent green man phasing for pedestrians in Cape town. 37th Annual South African Transport Conference and Exhibition and the 4th International conference on transport infrastructure, Pretoria, South Africa, Jukwaa Media 2018: 546-556.

2017

Journal Article

BETTI G, AIREY G, JENKINS KJ, MARRADI A, TEBALDI G. Active Filler’s Effect on In-situ Performances of Foam Bitumen Recycled Mixes. International Journal on Road Materials and Pavement Design. Road Materials and Pavement Design 2017; 18(2):281-296.

GERBER JAK, JENKINS KJ. Finite Element Modelling and Damage Quantification of Chip Seals. Road Materials and Pavement Design 2017; 18(2):350-361.

JENKINS KJ, COLLINGS D. Mix Design of Bitumen Stabilised Materials BSMs – South Africa and Abroad. Road Materials and Pavement Design 2017; 18(2):331-349.

RUDMAN J, GAUCHE DJ, ESLER KJ. Direct environmental impacts of solar power in two arid biomes: A initial investigation. South African Journal of Science 2017; 113:11-12.

International proceedings

DE JONGH F, BRUWER MM. Quantification of the Natural Variation in Traffic Flow on Selected National Roads in South Africa. 36th Southern African Transport Conference (SATC 2017), Pretoria, South Africa, Southern African Transport Conference 2017: 728-740.

MAREE JP, JENKINS KJ, BREDENHANN SJ, MOLENAAR A. Analysing a pavement structure with a crushed stone overlaying on an existing thick asphalt layer. 36th Southern African Transport Conference (SATC 2017), Pretoria, South Africa, South African National Roads Agency Limited (SANRAL) 2017: 221-233.

OLIVIER WJ, ANDERSEN SJ, BRUWER MM. Incident Analysis Using Probe Data. 36th Southern African Transport Conference (SATC 2017), Pretoria, South Africa, Southern African Transport Conference 2017: 697-711.

ROUX JG, BRUWER MM. Trip generation rates for retirement homes and villages in South Africa. 36th Southern African Transport Conference (SATC 2017), Pretoria, South Africa, Southern African Transport Conference 2017: 741-753.

SALASA A, ROODT LDV. Trip generation and parking demand of suburban mosques in the greater Cape Town, western cape. 36th Southern African Transport Conference (SATC 2017), Pretoria, South Africa, South African National Roads Agency Limited (SANRAL) 2017: 754-765.

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