Coatings of concrete thesis

Evaluation of concrete coating systems for sewage applications
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The experimental plan included investigation of the influence of three parameters on the plaster behavior: 1 The treatment given to the background prior to the plaster application. The background treatments types included application of a polymeric primer, application of a spatter-dash layer, mechanical and chemical roughening of the surface, and no treatment. The plaster types were regular, cement-based plaster prepared in-situ and an industrial plaster made from ready-mixed dry mortar.

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They were coated with plaster on both sides, where pull-out tests were performed before and after loading in order to evaluate the decrease in the adhesion strength. In this search many different compounds have been investigated as leachable corrosion inhibitor, but no alternative Physicochemical characterization of corrosion inhibition on galvanized steel surfaces: Organic coatings and green corrosion inhibitors.

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Conversion coatings are generally required to enhance organic coating adhesion and corrosion resistance on galvanized steel. Until a few decades ago, chromate conversion coatings were the most common conversion coatings in the industry owing to their exceptional performance in this regard. However, the adverse effects associated with hexavalent The replacement of solid airfoil trailing edges with permeable materials proved to be an adequate noise reduction mean in previous studies.

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This thesis project contributes to the development of innovative permeable Dealing with Biofouling: Is There an environmentally friendly and economically attractive coating for the shipping industry? The current approach in the shipping industry by the use of highly toxic coating systems is harmful for our inland waterways and oceans, does not benefit the public health and is very undesirable for all aquatic organisms on our planet. Influence of surface pretreatment on phosphate conversion coating on AZ91 Mg alloy.

Surface pretreatment is generally applied before application of protective coatings on Mg alloys, which influences surface microstructure and electrochemical activity of the substrate and has an effect on the coating properties. The effect of various pretreatment processes sand-blasting, grinding and polishing on the microstructure and Homogenization-based stiffness optimization and projection of 2D coated structures with orthotropic infill.

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This paper concerns compliance minimization and projection of coated structures with orthotropic infill material in 2D. The purpose of the work is two-fold. First, we introduce an efficient homogenization-based approach to perform topology optimization of coated structures with orthotropic infill material.


A thesis submitted to the Department of Civil Engineering. In conformity with the for the cylinders where the concrete surface was coated. The second part of. tective coating of granite should be used. Article III. Vol P Even in first class concrete built in or near sea water a depth of 1 or 2 inches of .

The design space is relaxed to allow Tungsten coatings were deposited on diamond particles by vacuum magnetron sputtering. The influences of heat treatment on the microstructure and Controlling microbubble-mediated drug delivery requires the underlying biological and physical mechanisms to be unraveled. Based on previous literature it is known, that various materials and sensors have been developed, but still are not commonly used in practice, since the materials used for the conductive phase can be extremely costly and difficult to disperse within the cementitious matrix, which especially accounts for nanoscale materials such as carbon nanotubes CNTs.

Recently, a new approach of creating a conductive and self-sensing concrete containing latex-CNTs thin film-coated aggregates has been developed and investigated with experimental methods. This method enables a less costly and less complex dispersion of the CNTs by spray-painting the coating on coarse and fine aggregates.


The objective of this thesis was to develop a numerical method to predict the piezoresistive behavior of the developed cementitious composite. Nowadays, to avoid costly and time consuming experiments, numerical simulations are an important tool to address such problems.

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Within a first step, significant parameter for creating a representative microstructure and numerical finite element model had to be identified. The electro-mechanical simulations were conducted for cementitious composites in the mortar-scale by applying a tensile strain to the microstructure.

enter After generation a random microstructure and performing preliminary simulations for a coupled mechanical-electrical physics it was realized, that interfacial debonding must be applied to achieve a fractural change in resistivity FCR , which is an indicator for the strainsensing ability of a cement-based composite.