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Browsing Journal Articles by Cluster "Smart Mobility"

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African case studies: Developing pavement temperature maps for performance-graded asphalt bitumen selection

Author: Mokoena, Refiloe ; Mturi, George AJ ; Maritz, Johan ; Mateyisi, Mohau ; Klein, Pieter Date: Jan 2022 The reliable performance of roads is crucial for service delivery, and it is a catalyst for domestic and cross-border spatial development. Paved national roads are expected to carry higher traffic volumes over time as a result of urbanization ... Read more
Climate change adaptation in the African roads sector: Constraints, opportunities and policy challenges [poster]

Author: Maritz, Johan ; Arnold, Kathryn A ; Roux, Michael P ; Le Roux, Alize ; Verhaeghe, Benoit MJA Date: Oct 2019 Roads play a vital role in strengthening the socio-economic development of regions in Sub-Saharan Africa by providing local communities with critical connections between essential market points, service towns and infrastructure. The United ... Read more c b
Comparing dynamic road wear of a performance-based standards and baseline vehicle

Author: Steenkamp, Anton J ; De Saxe, CC ; Kienhöfer, F ; Kemp, Lana Date: Jul 2021 The paved road network is a critical asset to any country and its economy. South Africa's paved road network has an estimated value in excess of R2 trillion. This asset is threatened by a backlog in maintenance of more than R416.6 billion, ... Read more
Contiguous aggregate packing as common principle for benchmarking asphalt density, stiffness and permeability control

Author: Horak, E ; Komba, Julius J ; Maina, J ; Sebaaly, H ; Muller, J Date: Mar 2022 Contiguous aggregates are aggregate sizes that consecutively follow a typical aggregate grading curve. Porosity calculation is possible for a binary or longer ranges of contiguous aggregates. Porosity is a fundamental density indicator and ... Read more
Correlating the asphalt-binder high-temperature properties (DSR) to HMA permanent deformation (RLPD) and field rutting: A laboratory-field study

Author: Walubita, LF ; Mahmoud, E ; Fuentes, L ; Prakoso, A ; Lee, SI ; Souliman, M ; Komba, Julius J Date: Nov 2020 Asphalt-binders are part of the key material constituents affecting the performance of hot-mix asphalt (HMA), and ultimately, the field performance of flexible pavement structures. Quite often, it is desired/useful to predict the HMA permanent ... Read more
Design and manufacturing of an aggregate abrasion test device for testing in high acceleration field

Author: Xungu, Sipho ; Mgangira, Martin B ; Giani, John C Date: Nov 2021 This paper describes the design and manufacturing of a mechanical system, the Aggregate Abrasion Test Device (AATD), which comprises of a rolling model drum, with the purpose of obtaining experimental data that is subsequently used to quantify ... Read more
Developments in Sustainable Geomaterials and Environmental Geotechnics

Author: Yao, K ; Zhenyu, M ; Komba, Julius Date: Jul 2021 This book presents the advancements in the field of sustainable materials in pavement engineering and related geotechnical engineering issues and sheds light on recent developments and advancements in characterization, design, construction, ... Read more
A framework of key growth factors for small enterprises operating at the base of the pyramid

Author: Van der Merwe, MD ; Grobbelaar, SS ; Meyer, Isabella A ; Schutte, CL ; Von Leipzig, KH Date: Nov 2020 Enterprises operating at the Base of the Pyramid (BoP) find it difficult to simultaneously achieve economic (profitable growth) and social (poverty alleviation) outcomes. This study builds on a previously published systematic literature review ... Read more
Guidelines for the provision of bypass roads at and through-ways in cities and towns

Author: Pienaar, PA ; Mokonyama, Mathetha T ; Das, DK ; Pienaar, WJ ; Stander, HJ ; Van As, SC ; Robinson, A Date: Jul 2023 Roads provide linkages between cities and towns, neighbouring countries, and to other points of interest. Up until the mid-20th century, roads forming part of the national network in South Africa generally passed through cities and towns. As ... Read more
High capacity vehicles road wear impact in South Africa

Author: Kemp, Lana ; Steenkamp, Anton J ; De Saxe, CC Date: Sep 2021 The substantial road maintenance backlog in South Africa, coupled with an inadequate budget allocation, requires high impact solutions in order to preserve the 158 000 km paved road network. Focussing efforts on the heavy vehicles operating ... Read more
The integration of smart mobility systems on the revised taxi recapitalisation program as a strategy to modernise the taxi industry

Author: Ditshego, JK ; Mokonyama, Mathetha T Date: Jul 2023 This research was about establishing the extent to which digital technologies have impacted the institutional arrangements, efficiency of operational procedures, and coverage of the Revised Taxi Recapitalisation Program. However, the approach ... Read more
Investigating the use of isothermal calorimetry for predicting physical properties of cements

Author: Mokoena, Refiloe ; Motau, T ; Mturi, George AJ Date: Sep 2021 Isothermal calorimetry is a useful technique for studying the cement hydration process that measures the heat flow of cement paste during hydration. Standard cement properties, such as compressive strength, setting times and compatibility can ... Read more
Laboratory performance and modelling behaviour of hot-mix asphalt with recycled crushed glass

Author: George, Theresa B ; Anochie-Boateng, Joseph ; Jenkins, KJ Date: Sep 2020 In South Africa research is currently under way to determine the suitability of using locally available recycled crushed glass as a partial fine aggregate substitute in the production of asphalt mixes. This paper characterises the laboratory ... Read more
One Health studies that adopt a formal modelling approach: A scoping review

Author: Van Heerden, N ; Grobbelaar, SS ; Meyer, Isabella A Date: Jul 2023 While the One Health perspective provides a useful approach by which to influence the complex interactions that pose a risk to the individual and collective health of humans, animals, and the environment, approaches to its operationalization ... Read more
Performance evaluation of bio-based fractions derived from Bacillus spp. for potential in situ soil stabilisation

Author: Ramdas, Veshara ; Lalloo, Rajesh ; Mandree, Prisha ; Mgangira, Martin B ; Mukaratirwa, Samson ; Ramchuran, Santosh O Date: Feb 2022 Current and future research focuses on the use of renewable technologies and materials to stabilise weak soils, of varying degrees, for road construction applications. Soil stabilisation is a method of strengthening a natural soil to meet ... Read more
A QoS-based evaluation of SDN controllers: ONOS and OpenDayLight

Author: Mamushiane, Lusani ; Shozi, Themba C Date: May 2021 SDN marks a paradigm shift towards an externalized and logically centralized controller, unlike the legacy networks where control and data planes are tightly coupled. The controller has a comprehensive view of the network, offering flexibility ... Read more
Review of current and future bio-based stabilisation products (enzymatic and polymeric) for road construction materials

Author: Malapermal Ramdas, Veshara ; Mandree, Prisha ; Mgangira, Martin B ; Mukaratirwa, S ; Lalloo, Rajesh ; Ramchuran, Santosh O Date: Oct 2020 In situ soil modification is required in order to improve the primary engineering properties of the material to meet a road construction standard. Bio-stabilised soil is an environmentally friendly, cost-effective alternative to imported ... Read more
Review of current and future bio-based stabilisation products (enzymatic and polymeric) for road construction materials (article)

Author: Ramdas, Veshara M ; Mandree, Prisha ; Mgangira, Martin B ; Mukaratirwa, S ; Lalloo, Rajesh ; Ramchuran, Santosh O Date: Mar 2021 In situ soil modification is required in order to improve the primary engineering properties of the material to meet a road construction standard. Bio-stabilised soil is an environmentally friendly, cost-effective alternative to imported ... Read more
A scoping review for proposing an eParticipation framework for South African local municipalities

Author: Mahwai, Nare J ; Phiri, Charles ; Dlamini, Sifiso B ; Herselman, Martha E ; Meyer, Isabella A Date: Jun 2023 Governments globally are making notable efforts to facilitate conversations with citizens to improve their participation in government decisionmaking by using various digital technologies in what could be coined as electronic participation ... Read more
Supporting the formation and functioning of innovation platforms in healthcare value chains

Author: Marais, A ; Grobbelaar, SS ; Meyer, Isabella A ; Kennon, D ; Herselman, Martha E Date: Dec 2020 Rising patient demands, a growing population, and resource limitations constrain the South African healthcare system. The integration of disparate interventions that are developed and implemented across various actors in healthcare value ... Read more

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