Search for dissertations about: "threshold values"

Showing result 1 - 5 of 105 swedish dissertations containing the words threshold values.

  1. 1. Chloride transport and chloride threshold values : studies on concretes and mortars with Portland cement and limestone blended cement

    University dissertation from Lund : Division of Building Materials, Lund University

    Author : Dimitrios Boubitsas; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cement; Mortar; Concrete; Corrosion; Reinforcement; Chloride ions;

    Abstract : Reinforced concrete is one of the most widely used building materials and if it is properly designed and produced, it is an extremely durable material with a service life up to 100 years. However, under certain environmental conditions the service life of reinforced concrete structures is more limited. READ MORE

  2. 2. Collision Threshold Pressure A novel measure of voice function Effects of vocal warm-up, vocal loading and resonance tube phonation in water

    University dissertation from Linköping : Linköping University Electronic Press

    Author : Laura Enflo; Anita McAllister; Johan Sundberg; Marc de Bodt; [2013]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Abstract : The phonation threshold pressure (PTP), i.e., the smallest amount of subglottal pressure needed to initiate and sustain vocal fold oscillation, is frequently difficult to measure due to the difficulty for some subjects to produce extremely soft phonation. In addition, PTP values are often quite scattered. READ MORE

  3. 3. Chloride Induced Corrosion of Reinforcement Steel in Concrete - Threshold Values and Ion Distributions at the Concrete-Steel Interface

    University dissertation from Linköping : Linköping University Electronic Press

    Author : Nelson Dias Ferreira Da Silva; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LA-ICP-MS; pitting corrosion; chloride threshold values; concrete-steel interface;

    Abstract : The chloride threshold value (Cth), or critical chloride content, is defined as the chloride concentration at the depth of the reinforcement, which initiates the depassivation of steel in concrete. However, very limited information is available regarding the chloride distributions at the interface with the steel. READ MORE

  4. 4. Improved computerized perimetric threshold strategies

    University dissertation from Department of Ophthalmology, Lund University

    Author : Boel Bengtsson; [1999]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; probability maps; normal limits; test time; clinical testing; test strategies. glaucoma; test algorithms; false positive answers; Visual field testing; computerized perimetry; Ophtalmology; Oftalmologi;

    Abstract : Perimetric threshold examination is the most important method for diagnosing and monitoring patients with glaucoma. Such examination, however, is time-consuming and often difficult for the elderly patients in whom glaucoma is prevalent. Shorter test strategies have been proposed, but unfortunately also with lower test quality. READ MORE

  5. 5. Corrosion of steel in concrete

    University dissertation from Swedish Cement and Concrete Research Institute, Stockholm

    Author : Kyösti Tuutti; [1982]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Corrosion; carbonation; chloride penetration; threshold values; free and bound chloride; acceptable depth of corrosion; corrosion products; environment types; cracks; cement type; service life calculations; test methods; korrosion; betong; betongkonstruktioner; armeringskorrosion; kloridinträngning; sprickor; livslängdsberäkningar;

    Abstract : The research work that is presented in this thesis aims at mapping out the various mechanisms which control the process of steel corrosion in concrete. The process of corrosion is illustrated with a schematic model where the service life is divided into a period of initiation and a period of propagation. READ MORE