Author:Mokoena, Refiloe; Mturi, George AJ; Maritz, Johan; Mateyisi, Mohau; Klein, PieterDate:Jan 2022The 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
Author:Makhari, A; Hawes, Nomashaka BN; Mturi, George AJ; Ojijo, Vincent ODate:Jul 2021Modifying bitumen is currently a common practice in South Africa. The asphalt pavement industry has seen an increase in use of different types of modifiers in an attempt to improve or extend the properties of bitumen. Common modifiers used ...Read more
Author:Kemp, Lana; Roux, Michael P; Kemp, Mauritz J; Kock, RDate:Jul 2021In South Africa, visual inspections for all bridge structures are required every five years. A need was identified to establish if it would be practical to utilise technologies, such as drones and photogrammetry, to improve inspections and ...Read more
Author:Barnard, HC; Venter, KarienDate:Jul 2023Vulnerable road user fatalities continue to make up the bulk of road traffic related deaths in South Africa. Safe System-based measures aim to improve the safety of the road environment for all road users including vulnerable road users. Safe ...Read more
Author:Kemp, Lana; Roux, Michael P; Steyn, WJvdMDate:Nov 2022In South Africa, it is a requirement for all road agencies to conduct principal visual inspections of all bridge structures every five years. Smaller municipalities do not always have the necessary funds available for principal bridge ...Read more
Author:Dlamini, Sifiso B; Meyer, Isabella ADate:Dec 2020Resilience is a popular concept in development studies, particularly in research and development on how Information and Communication Technologies (ICTs) can be used to improve livelihoods. As much as the primary focus is on using ICTs to ...Read more
Author:Steenkamp, Anton J; De Saxe, CC; Kienhöfer, F; Kemp, LanaDate:Jul 2021The 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
Author:Rust, FC; Sono, P; Van Dijk, G G; Fourie, H; Smit, Michelle ADate:Sep 2021In low-income countries Research and Development funding is limited and has to be invested with a view of optimum return, both economic return but also “softer” benefits such as human resource development. The assessment of these benefits is ...Read more
Author:Horak, E; Komba, Julius J; Maina, J; Sebaaly, H; Muller, JDate:Mar 2022Contiguous 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
Author:Walubita, LF; Mahmoud, E; Fuentes, L; Prakoso, A; Lee, SI; Souliman, M; Komba, Julius JDate:Nov 2020Asphalt-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
Author:Walubita, LF; Ling, M; Fuentes, L; Komba, Julius J; Mabrouk, GMDate:Sep 2022Asphalt binder is one of the key constitutive components of hot-mix asphalt (HMA) that considerably affects its rutting performance. In particular, the high-temperature rheological properties measured from the multiple stress creep and recovery ...Read more
Author:Komba, Julius J; Langa, R; Paige-Green, P; Verhaeghe, Benoit MJA; Mokoena, RefiloeDate:Dec 2021The chapter is organized and structured as follows; the introduction section is followed by an overview of climate change-related challenges affecting Mozambique. The study methodology (approach) is then described, followed by a discussion ...Read more
Author:Xungu, Sipho; Mgangira, Martin B; Giani, John CDate:Nov 2021This 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
Author:Ferreira, A; De Saxe, C; Steenkamp, Anton J; Nordengen, PDate:Jul 2022The Static Rollover Threshold (SRT) is an important metric for characterising a heavy vehicle’s inherent stability and risk of rollover. Current methods of assessing SRT include a tilt-table test and multi-body dynamics simulation which can ...Read more
Author:Yao, K; Zhenyu, M; Komba, JuliusDate:Jul 2021This 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
Author:O'Connell, Johannes S; VdM Steyn, WJ; Maina, JDate:Dec 2024Ageing 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 is based on a short-term ...Read more
Author:Kemp, Lana; Steyn, W; Roux, Michael PDate:Sep 2022This 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 (UAVs) can be used ...Read more