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Browsing by Author "Kalumba, Denis"

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A Comparative Study on Shear Strength Testing of Single and Multi-layer Interfaces using Large Direct Shear Apparatus

Author: Muluti, Shade Date: 2021 Geotechnical structures such as composite liner systems in landfills consist of multiple interfaces, which include a broad range of geosynthetics in conjunction with soil, rocks and any other related materials. This results in the introduction ... Read more
A laboratory investigation on the shear strength characteristics of soil reinforced with recycled linear low-density polyethylene

Author: Nolutshungu, Lita Date: 2018 Since the development of plastics in the 1930’s, plastics have increasingly become widely used for packaging in the commercial market place. With this application being for immediate disposal, the amount of plastic waste generated presents a ... Read more
A study on ground improvement using a combination of stone and concrete columns

Author: Pudaruth, Yogendra Date: 2018 Stone column is a cost-effective ground improvement technique that is typically employed for low-rise buildings and road embankments. This technique mainly uses naturally occurring materials as its load transferring medium. However, stone ... Read more
An Experimental Study on the Infiltration Potential of Stormwater Ponds in Zeekoe Catchment, Cape Town, South Africa

Author: Mavundla, Kgomoangwato Date: 2022 In early 2018, the city of Cape Town, with a population of approximately 3.8 million, was at risk of running out of water from the six large reservoirs to the east of the city. This was due to the worst drought in almost a century, which ... Read more
An Investigation into the Effects of Asperities on Geomembrane/Geotextile Interface Shear Characteristics

Author: Adeleke,Daniel Date: 2020 Geomembranes are often utilized as fluid barriers in geotechnical applications such as landfills. Due to their relative impermeability and chemical resistance characteristics, they are usually used alongside other geosynthetics like geotextiles ... Read more
An investigation into the use of plastic chips to reduce collapsibility in loess-like soils at Mount Moorosi Village, Lesotho

Author: Venter, Jason Date: 2021 Mount Moorosi Village, located within the Senqu River Valley in Lesotho, has experienced significant damage to its buildings over the last several years, due to severe cracking. The cause of these cracks has been attributed to the local soil, ... Read more
An investigation into the volume change characteristics of loess like soil in Mount Moorosi Village in Lesotho

Author: Damane, Monica Date: 2019 The Mount Moorosi village is situated in the Senqu River Valley of southern Lesotho, within the Stormberg landform. The integrity and aesthetic appearance of nearly all the structures in this area are undermined by recurrent cracks. At present, ... Read more
An Investigation of the Effects of Specimen Gripping Systems on Shear Stress at the Geosynthetic/Geosynthetic Interface in Landfill Applications

Author: Sikwanda, Charles Date: 2019 The use of geosynthetics has rapidly increased in nearly all geotechnical related fields as they allow for innovations, improved performance and cost effectiveness in projects. However, when geosynthetics are installed on sites, particularly ... Read more
Analytical and numerical study of dolomite sinkholes in Centurion South Africa

Author: Avutia, Daniel John Date: 2014 Sinkholes encompass the withdrawal of shallow sediment into deep hollow compartments located in karstic stratum. These subsequent surface openings associated with karst geology have inhibited multiple infrastructure developments. Sinkholes ... Read more
Application of a discrete element model to the analysis of granular soil recovery in an offshore tubular vibrocore

Author: Wegener, Sam Bryant Date: 2015 As the human need for ocean resources accelerates, offshore geotechnics continues to grow and become ever more relevant. Seabed soil sampling is crucial in deep-water engineering projects or geological studies where a detailed knowledge of ... Read more
Comparative Assessment of Single & Double Interface Shear Strength Properties: A Case Study of a Landfill Project in the Western Cape Province, South Africa

Author: Sylivery, Victor Date: 2022 Geosynthetics are now stipulated inclusions in municipal solid waste (MSW) landfill's lining systems as they provide a competent hydraulic barrier, limiting environmental pollution and protecting public health. While these inclusions have ... Read more
Comparison of shear strength properties of textured polyethylene geomembrane interfaces in landfill liner systems

Author: Buthelezi, Sanelisiwe Nonhlanhla Precious Date: 2019 The interface shear strength between geomembranes and geosynthetics is a critical factor governing the stability of slopes that incorporate geosynthetics. In order to better characterise the shear properties of geomembranes, a wide-range of ... Read more
Correlating standard penetration test and dynamic probe super heavy penetration resistance values in sandy soils

Author: MacRobert, Charles ; Kalumba, Denis ; Beales, Patrick Date: 2011 This paper presents a statistical method used to develop an empirical equivalence between the Standard Penetration Test (SPT) and the Dynamic Probe Super Heavy (DPSH) in sandy material. Penetration resistance values from the two tests are ... Read more
Direct shear and direct simple shear tests: a comparative study of the strength parameters and their dependence on moisture and fines contents

Author: Babalola, Zainab Date: 2016 Shear strength of soil is characterized by cohesion, angle of internal friction and dilatation. The first two parameters mentioned primarily define the soil's ability to resist shear stress underspecified load. These parameters can be determined ... Read more
Effect of grading and grain size on the friction characteristics of a sand/geotextile inteface

Author: Kalumba, Denis Date: 1998 Geofabrics are incorporated in geotechnical engineering structures for various reasons and functions. This study addresses the reinforcement function whereby geotextiles are utilised as reinforcing elements in reinforced slopes and fills. It ... Read more
Evaluation of the electrical density gauge for in-situ moisture and density determination

Author: Lekea, Angella Date: 2015 Densification of soil during construction of earth structures is achieved through the process of compaction by application of mechanical energy to obtain the required engineering properties of the soil for a particular project such as hydraulic ... Read more
Experimental study of shear behaviour of high density polyethylene reinforced sand under triaxial compression

Author: Wanyama, Paul Date: 2017 Soil reinforcement is an ancient technique which involves the addition of tensile elements like plastics in the soil to increase its engineering properties like shear strength, settlement, cohesion and bearing capacity. In consideration of ... Read more
Geotechnical considerations for onshore wind turbines : adapting knowledge and experience for founding on South African pedocretes

Author: Warren-Codrington, Charles John Date: 2013 Wind energy has been placed at the centre of the South African Government's Renewable Energy Independent Producer Programme (REIPPP) with the purpose of addressing electricity capacity deficits and poor service delivery. In doing so, substantial ... Read more
Geotechnical engineering design of a tunnel support system - a case study of Karuma (600MW) hydropower project

Author: Ongodia, Joan Evelyn Date: 2017 Tunnels have been built since 2180 B.C., through the stone age. They became popular worldwide since the eighteenth century, as transportation, military, mining, conveyance, storage and flood control structures. Due to the increasing world ... Read more
Ground improvement using PET bottle waste as a potential reinforcement material for granular columns: an experimental approach

Author: Sobhee-Beetul, Laxmee Date: 2019 Out of the many ground improvement methods aimed at ameliorating the weak engineering properties of certain soils, granular columns are often preferred due to their cost effectiveness and environment friendliness. Despite their high usage in ... Read more

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