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Browsing Civil Engineering by UP Author "Kearsley, Elsabe P."
Now showing items 1-20 of 41
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Kearsley, Elsabe P.; Smit, Martha S. (Taylor and Francis, 2023)Concrete pavements are typically considered to be rigid pavements and are designed using principles based on the beam-on-elastic support equations as derived by Westergaard in 1926. Ultra-Thin Continuously Reinforced ...
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Du Toit, Grizelda; Van der Merwe, E.M. (Elizabet Margaretha); Kruger, Richard A.; McDonald, James M.; Kearsley, Elsabe P. (MDPI, 2022-01-27)Cement companies are significant contributors of the planet’s anthropogenic CO2 emissions. With increased awareness of the substantial volume of CO2 emissions from cement production, a variety of mitigation strategies ...
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Kovtun, Maxim; Kearsley, Elsabe P.; Shekhovtsova, Julia (Elsevier, 2015-06)This paper presents results of a study on chemical acceleration of a neutral granulated blast-furnace slag activated using sodium carbonate. As strength development of alkali-activated slag cements containing neutral GBFS ...
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Du Toit, Grizelda; Kearsley, Elsabe P.; Mc Donald, James M.; Kruger, Richard A.; Van der Merwe, E.M. (Elizabet Margaretha) (Thomas Telford, 2018)Hybrid fly ash cement is a binder with a composition between that of pozzolanic fly ash cement and alkali-activated fly ash cement. Its production requires less cement clinker than ordinary Portland cement, facilitating ...
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Mackellar, Andrew; Kearsley, Elsabe P. (South African Institution of Civil Engineering, 2019-12)Ultra-Thin Continuously Reinforced Concrete Pavement (UTCRCP) is an innovative road paving technology that can have significant advantages over traditional road paving techniques. Tests have shown that UTCRCP can carry ...
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Kearsley, Elsabe P.; Jacobsz, Schalk Willem (EDP Sciences, 2018)Reinforced concrete is the most widely used construction material and thus effective condition assessment of reinforced concrete elements forms a significant part of structural health monitoring. An effective structural ...
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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 ...
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Kearsley, Elsabe P.; Van As, S.C. (South African Institution of Civil Engineering, 1995)The condition of a railway track tends to deteriorate with time. The objective of this paper is to investigate this deterioration and to determine whether improvements in track geometry can retard the deterioration, and ...
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Vatannia, Sharifeh; Kearsley, Elsabe P.; Mostert, Derek (Elsevier, 2020-12)Ultra High Performance Fiber Reinforced Concrete (UHPFRC) is a type of concrete which possess very high compressive strength (more than 150 MPa) and high ductility which makes it a suitable material for manufacturing ...
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Kovtun, Maxim; Ziolkowski, Mateusz; Shekhovtsova, Julia; Kearsley, Elsabe P. (Elsevier, 2016-10)Utilization of the fly ashes is a major problem in many developing countries and in South Africa only about 7% of the fly ash produced annually by coal-fired power stations, is being utilized. Although, fly ashes can be ...
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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 ...
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Kovtun, Maxim; Kearsley, Elsabe P.; Shekhovtsova, Julia (Thomas Telford, 2015)This paper reports on the results of an investigation into the possibility of producing dry powder alkali-activated slag cements as a ready-to-use product which can be packed in bags and mixed with water to produce a ...
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Kearsley, Elsabe P. (MDPI, 2023-12)No abstract available.
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Shekhovtsova, Julia; Kearsley, Elsabe P.; Kovtun, Maxim (South African Institution of Civil Engineering, 2014-10)In this paper the effect of sodium oxide concentration, the water-to-binder-solids ratio, temperature, and the duration of elevated temperature curing on the compressive strength of alkali-activated fly ash cement pastes ...
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Kearsley, Elsabe P.; Joyce, Alicia (South African Institution of Civil Engineering, 2014-08)New performance-based design codes are currently being developed, where the design life of reinforced concrete structures will be estimated by taking into account not only the time to initiation of reinforcement corrosion, ...
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Kearsley, Elsabe P.; Elsaigh, W.A.M. (South African Institution of Civil Engineering, 2003)Steel fibre reinforced concrete (SFRC) is increasingly being used for ground slab applications. The addition of steel fibres to concrete imparts significant post-cracking ductility (toughness). This ductility is used to ...
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Effect of fly ash characteristics on the behaviour of pastes prepared under varied brine conditions Mahlaba, Jabulani Samuel; Kearsley, Elsabe P.; Kruger, Richard A. (Elsevier, 2011-07)To meet the escalating demand of energy more coal ash and brines are inevitably produced as by-products. Large volumes of these wastes and increasing environmental awareness necessitate the development of more sustainable ...
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Kearsley, Elsabe P.; Wainright, P.J. (South African Institution of Civil Engineering, 2003)Fly ash or pulverised fuel ash is a by-product of the combustion of pulverised coal in thermal power plants. The recognition that fly ash frequently exhibits pozzolanic properties has led to its use as a constituent of ...
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Du Plessis, Hanli; Kearsley, Elsabe P.; Matjie, Ratale Henry (South African Institution of Civil Engineering, 2007-12)In recent years the cement and concrete industry has reduced its environmental impact by increasing the use of waste materials as both cement extenders and fillers in concrete. Fly ash has been widely used as a cement ...
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Schoeman, Nicholas Kyle; Jacobsz, Schalk Willem; Kearsley, Elsabe P. (Southern African Institute of Mining and Metallurgy, 2022-11)A physical modelling approach was adopted to simulate the process of cave mining propagation at various horizontal to vertical stress state ratios, and image data was captured and used to characterize the resulting failure ...
Now showing items 1-20 of 41