Search for dissertations about: "impregnering"

Showing result 1 - 5 of 12 swedish dissertations containing the word impregnering.

  1. 1. Hydrophobic Impregnation of Concrete Structures : Effects on Concrete Properties

    Author : Anders Selander; Johan Silfwerbrand; Jan Trägårdh; Mårten Janz; Andreas Gerdes; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; hydrophobic impregnation; silane; siloxane; concrete; surface treatment; water repellent agent; building protection; impregnering; betong; silan; siloxan; ytbehandling; Civil engineering and architecture; Samhällsbyggnadsteknik och arkitektur;

    Abstract : Hydrophobic impregnations often referred to as water repellent agents, today mainly consisting of alkylalkoxysilanes, are often used on concrete to prolong the service life of the structure. This is accomplished by protecting the reinforcement bars from chlorides or by changing the moisture content inside. READ MORE

  2. 2. Aspects of optimizing pulp fibre properties for tissue and packaging materials

    Author : Hafizur Rahman; Armando Cordova; Per Engstrand; Börje Norlin; Göran Bengtsson; Mittuniversitetet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : To improve the competitive advantages of pulp fibre-based materials for tissue and packaging over fossil-based products, it is essential to increase knowledge of the selectivity of the cooking and the chemimechanical processes by optimizing the unit operations of impregnation, cooking and refining. A general goal in pulping processes is to achieve as efficient and even fibre separation as possible. READ MORE

  3. 3. Strontium Titanate-based Anodes for Solid Oxide Fuel Cells

    Author : Peter Blennow Tullmar; Centrum för analys och syntes; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Kondenserade materiens egenskaper:elektronstruktur; spectroscopy; relaxation; magnetic resonance; supraconductors; magnetic and optical properties; electrical; Condensed matter:electronic structure; fasjämvikt; egenskaper termiska och mekaniska ; kristallografi; phase equilibria; Kondenserade materiens egenskaper:struktur; Condensed matter:stucture; thermal and mechanical properties; crystallography; infiltration; surfactant; ceria; Gd-doped ceria; redox stability; SOFC; ceramic anode; XRD; XANES; electrochemical impedance spectroscopy; defect chemistry; Nb-doped SrTiO3; electron microscopy; egenskaper elektriska; magnetiska och optiska ; supraledare; magnetisk resonans; spektroskopi; Inorganic chemistry; Oorganisk kemi; Electrochemistry; Elektrokemi; Energy research; Energiforskning; Composite materials; Kompositmaterial; Ceramic materials and powders; Keramiska material och pulver;

    Abstract : The purpose for this work has been to develop new robust fuel electrodes for solid oxide fuel cells (SOFC). The aim was to find suitable ceramic materials or composites with promising properties for the use as SOFC anodes. READ MORE

  4. 4. Eco-friendly Holocellulose Materials for Mechanical Performance and Optical Transmittance

    Author : Xuan Yang; Lars Berglund; Eero Kontturi; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Abstract : Cellulosic materials can be sustainable replacements for fossil-based plastics; yet for some applications improvements are needed for mechanical properties, optical transmittance and eco-friendly characteristics. In this thesis, holocellulose materials are investigated for this purpose, and processing-structure-property relationships are discussed. READ MORE

  5. 5. Wood chips for kraft and sulfite pulping : evaluation of novel forest-industrial drum-chipping technology

    Author : Jessica Gard Timmerfors; Leif J. Jönsson; David Blomberg; Sören Östlund; Umeå universitet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; wood chip; drum chipper; impregnation; pulping; sulfite process; kraft process; Scots pine; Norway spruce; heartwood; frozen wood; moisture content;

    Abstract : Wood chipping and the supply of high-quality wood chips are of critical importance for most forest-industrial processes. The quality of wood chips affects product yield, product quality, and processability. READ MORE