Department of Civil Engineering
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Recent Submissions
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Feasibility and geotechnical design of subsurface dams in dry ephemeral rivers for the augmentation of shallow groundwater supply
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Recent droughts and projected climate changes in South Africa make it an essential priority to augment water availability, particularly in the most vulnerable rural communities. The Molototsi River, a ...
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Estimating outdoor water use allowing for the possible impacts of climate change
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Climate change may stress water supply systems due to both diminishing water resources and rising climate driven water use. Reducing the sensitivity of residential outdoor water use to climatic factors ...
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The effect of controlled pressure adjustment on consumer water demand in an urban water distribution system
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Pressure management is commonly employed as part of water conservation and water demand management strategies in water distribution systems (WDS). Most of the earlier work on this subject focussed on ...
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Development of a procedure for separately allocating water leakage and other types of non-metered water to nodes in the hydraulic model
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: The correct allocation of water loss to nodes in hydraulic models of water distribution systems is an important consideration for the purposes of designing such systems. Some components of total water ...
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An assessment of the inherent reliability of SANS 10162-2 for cold-formed steel columns using the direct strength method
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: With their thin and slender nature, Cold formed Steel (CFS) elements can be forged into a large variety of cross sections. It is recommended that the Direct Strength Method (DSM), a modern design method, ...
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The minimum site investigation requirements needed to define site conditions considering the results of ground investigations and its true reflection of actual site conditions found during construction
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: The success of civil engineering projects, whether it involves the construction of houses, bridges, roads or tunnels, depend largely on the adequate identification of subsurface conditions. Geotechnical ...
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Target reliability of concrete structures governed by serviceability limit state design
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Structures are typically designed for the ultimate limit state (ULS) while the serviceability limit state (SLS) is checked. However, in many cases the design is governed by SLS requirements. The target ...
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Model for predicting creep of cracked steel fibre reinforced concrete
(2018-03)ENGLISH ABSTRACT: The investigation of the creep of cracked fibre reinforced concrete has gained momentum over the past few years. However, there is still no proposed model of how to include the additional creep caused by ...
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Optimality in sewer network design
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Sewer networks form a vital part of urban infrastructure and represent a capital intensive expense in the public sector. In South Africa, a recent estimation stated that R44.75 billion is required to ...
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The effect of fire on hydrological response and the subsequent effect on streamflow
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Fire is a destructive force that destroys thousands of hectares of both urban and rural vegetation in South Africa every year. Fire not only destroys vegetation, but also affects the infiltration and ...
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A design function for bitumen stabilised material performance based on laboratory and field evaluation
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: The use of stabilised granular materials for road pavements are ever increasing throughout South Africa. There are currently two commonly used methods for the stabilisation of granular materials in road ...
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Modelling the shrinkage behavior of recycled concrete aggregate and cement stabilised materials
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Cement stabilisation of subbases is an effective method to increase the strength, permeability, stability and performance of a pavement structure. Stabilisation is used to improve marginal quality materials, ...
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Chloride induced corrosion of integral and non-integral surface treated lightweight foamed concrete
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Advancement in new technologies and methods of producing foaming agents have resulted in enhanced possibility of a structurally performing lightweight concrete. Lightweight foamed concrete (LWFC) is a ...
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The performance properties of recycled concrete in road pavement materials
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Due to a rise in population and industrialisation, the demand on infrastructure in developing countries have increased significantly. The world has been moving towards a more environmentally friendly and ...
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Relationship between the age related performance of a typical bituminous binder in South Africa and the fatigue performance of the asphalt mixture
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: The primary factor affecting the durability of bituminous binders is ageing. Ageing causes an increase in stiffness which leads to non-load associated cracking in asphalt mixtures. Laboratory ageing has ...
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Carbonation of cement stabilised materials in pavement layers
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: The remarkable increase in global traffic has encouraged innovative pavement designs capable of satisfying environmental, economic and social needs. The construction and demolition industry has had a major ...
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Performance testing of enrobés à module elevé asphalt
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Enrobés à Module Elevé (EME), is a French based technology developed during the 1980’s and utilises a low penetration bitumen at high binder contents to produce a very stiff asphalt, which has superior ...
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Formwork pressures by self-compacting concrete: a practical perspective
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: One of the challenges facing the South African construction industry is the prediction of lateral formwork pressure exerted by Self-Compacting Concrete. A major hindrance to the increased use of Self-Compacting ...
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Assessment of usually encountered damage on concrete bridges and its influence on the load carrying capacity capacity and safety of users
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: The assessment of existing bridges is becoming increasingly important since it is necessary to ensure that all bridges maintain structural integrity in terms of the ultimate limit state for which they ...
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Age-related performance of typical seal binders in South Africa
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: The age-related performance of typical seal binders in South Africa was studied to understand the behaviour of the binders as it ages. The three main failure mechanisms for surfacing seals include surface ...
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Retrofitting South Africa's cities with green roofs: cost benefit analyses for large scale green roof implementation.
(2018-03)ENGLISH ABSTRACT: Cities are most at risk to climate change and South African cities are no exception. To a large extent, cities are also the cause of their own demise in terms of environmental concerns and need to adapt ...
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The tensile material properties of plastic concrete and the influence on plastic cracking
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: During the plastic state of concrete, two forms of volume change exist, namely: plastic settlement which refers to the gravitational settlement of solid particles, which in turn displaces bleed water to ...
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Nonlinear truss modelling of masonry infill frames towards sustainable residential buildings
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: With significant international efforts focused on sustainable development goals, the role of engineers in achieving sustainable infrastructure development cannot be over-emphasised. However, one of the ...
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Thermal behaviour of a novel cellular beam structural system in fire
(Stellenbosch : Stellenbosch University, 2018-03)AFRIKAANSE OPSOMMING: Die Suider-Afrikaanse Instituut vir Staalkonstruksie (SAISC) het 'n modulêre staalraamstruktuur ontwikkel wat bestaan uit sellulêre balke. Die selulêre balkstruktuur (SBS) bevat geen beton nie, wat ...
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A cooperative venture capital framework : an innovation pipeline developed with an enterprise engineering approach that supports and promotes entrepreneurial teams in commercialising intellectual property and technology
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: The field of entrepreneurship and innovation has been prominent in the past century, with increasingly more research produced in recent decades. The identified interdependencies between entrepreneurship ...
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Carbonation induced corrosion in integral and non-integral surface treated lightweight foam concrete
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: Carbonation induced corrosion is a concern in reinforced lightweight foam concrete (R/LWFC) as a result of air entrainment. Concerns arise from whether the air voids increase diffusivity of carbon dioxide ...
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Optimisation of wind turbine foundations
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: This study seeks to optimize the foundations of tall wind turbine support structures in South Africa. It is postulated that the concrete quantity can be reduced in gravity based foundations by incorporating ...
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Artificial aeration on stepped spillways with piers and flares to mitigate cavitation damage
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: Stepped spillways have been used for approximately 3500 years and, with the recent technical advances in Roller Compacted Concrete construction, these spillways have received a renewed interest over the ...
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Berm height at temporarily open/closed estuaries in South Africa: analysis and predictive methods
(2017-12)ENGLISH ABSTRACT: This study investigates the berm crest elevation at South African Temporarily Open/Closed Estuaries (TOCE), as well as the processes involved in berm growth, and the drivers that contribute to variation ...
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Effect of the form of the overhang of a recurve seawall to reduce wave overtopping
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: Coastal areas around the world are experiencing a rise in sea level due to the effects of global warming. As a large percentage of the world’s population resides within the coastal zone, the rise in sea ...
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