Global ETD Search
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Showing 1 to 6 of 6 for “"Materiallära"”.
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Continuum Mechanics Modelling of Corrugated Board
The storage of compressive loaded boxes in an environment with naturally varying humidity is a practical issue in corrugated board employment. Time dependent variables such as moisture content, strain fields, stress fields and material strength play important roles for the time to failure. …
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The influence of ageing on the salt-frost resistance of concrete
Abstract This thesis presents the results of an investigation of the influence of ageing on the salt-frost resistance of concrete. The ageing mechanisms investigated were hydration, drying and carbonation. Specimens of ‘micro’-concrete, either with OPC alone as the binder or with silica or slag as …
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Studies of moisture and alkalinity in self-levelling flooring compounds
<p>In recent decades there has been an increasing interest in the indoor environment and its connections with public health. One important topic discussed has been the relation between the moisture in buildings and health. <p> Cementitious materials, when cast, contain excess water since this is …
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Internal frost damage in concrete - experimental studies of destruction mechanisms
The aim of the study was to identify mechanisms acting at internal frost destruction of concrete. By 'internal frost destruction' is meant damage caused inside concrete that is moisture insulated from the surroundings, i.e. when no moisture exchange with the surroundings is possible during …
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Micromechanical Modelling of Wood and Fibre Properties
Wood is a material with mechanical properties that vary markedly, both within a tree and among trees. Moisture changes lead to shrinkage or swelling and modify the mechanical properties. In the present study both experimental and numerical work concerning the stiffness and the hygroexpansion …
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Finite Element Procedures in Modelling the Dynamic Properties of Rubber
Rubber is not only a non-linear elastic material, it is also dependent on strain rate, temperature and strain amplitude. The non-linear elastic property and the strain amplitude dependence give a non-linear dynamic behavior that is covered by the models suggested in this thesis. The focus is on a …