Global ETD Search
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Showing 1 to 9 of 9 for “"Concrete Dams"”.
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Ambient vibration testing of concrete dams
… to data from ambient vibration testing of two concrete dams namely; Roode Elsberg and Kouga dams.
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Applying the DER rating system for the visual assessment of defects on concrete dams
… the management and maintenance of Namibia's main dams, amongst the many other infrastructure assets under their ownership. They have, as a result, devised asset management policies and practices with the aim of reaping the benefits of asset management. Additionally, they have aligned themselves …
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Temperature and thermal stress distribution in concrete arch dams in operation
The temperature field of concrete dams in operational stages is dominantly influenced by variations in environmental seasonal temperature and climatic conditions. Cyclic seasonal temperature and associated thermally induced stresses have been found to contribute significantly to long term …
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Structural performance evaluation of concrete arch dams using ambient vibration monitoring and GNNS systems
… on civil engineering infrastructures such as concrete dams that provide necessities such as water supply for irrigation, hydroelectric power generation and prevention of floods. As a result, it is important to ensure that concrete dams are protected such that their failure is avoided. To …
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Efeitos térmicos em estruturas maciças de concreto
This work studies thermal effects on mass concrete structures, considering the incremental construction of the structure. Particular attention is given to problem of thermal stress which are find in gravity concrete dams, caused, mainly, by high increases of temperature and following gradual …
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Hydromechanical Evaluation of Flow Behavior in Rock Foundations of Concrete Gravity Dams
… satisfactory structural behavior observed in concrete dams. The results obtained in this study indicate that adequate dam behavior might actually be the result of factors other than cohesion, such as the presence of 3-D rock wedges at the dam foundations, the arching of reservoir water loads …
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A comparative study on the structural behavior of concrete arch dams subjected to swelling due to aggregate sllica reactions
… water resources. As time goes by, the ageing of dams in South Africa is becoming an increasingly important factor to consider from a dam safety perspective. When considering concrete dams, Alkali Aggregate Reactions (AAR) which is the collective term referring to the potential chemical reactions …
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Moisture Conditions and Frost Resistance of Concrete in Hydraulic Structures
… a considerable impact on the deterioration of concrete. Both superficial and internal damage, which are suspected to have been caused by frost action, have been found in concrete in hydraulic structures. These observations have raised questions about the long-term behaviour of hydraulic …