Search for dissertations about: "Hydraulic Structures"
Showing result 1 - 5 of 55 swedish dissertations containing the words Hydraulic Structures.
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1. Multiphase models for freeze-thaw actions and mass transport in concrete hydraulic structures
Abstract : A crucial task for civil engineers is to make appropriate designs of new concrete structures and assessments of existing structures to ensure a long service life and sustainable use of the infrastructure. This doctoral thesis aims to increase the understanding of how advanced mathematical models can be used to describe phenomena and processes governing concrete degradation and thereby ultimately contribute to improving tools for design and assessments. READ MORE
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2. Moisture Conditions and Frost Resistance of Concrete in Hydraulic Structures
Abstract : Owing to the winter conditions in Sweden, the effects of frost action may have 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. READ MORE
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3. Frost-induced deterioration of concrete in hydraulic structures : Interactions between water absorption, leaching and frost action
Abstract : Frost deterioration of concrete can result in severe consequences to the safety, durability and functionality of a structure since it impairs the strength of the concrete. Frost damage may occur to structures that are in contact with water and subjected to frost action. READ MORE
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4. Numerical models for degradation of concrete in hydraulic structures due to long-term contact with water
Abstract : The durability of concrete is of major concern in all types of concrete structures where the combined effect of exposure conditions and the type and quality of the concrete material usually determines the rate of degradation. Furthermore, there are synergy effects between different deterioration mechanisms, which means that the combined rate of degradation is higher than the sum of the individual rates of each mechanism. READ MORE
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5. Condition assessment of concrete dams in cold climate
Abstract : Dams in many countries are approaching their expected service life. Proper assessment of the aging dams structural health increase the knowledge of the current safety, and allow for better planning of renovation and rebuilding investments. READ MORE