Search for dissertations about: "Kjartan Gudmundsson"

Showing result 1 - 5 of 9 swedish dissertations containing the words Kjartan Gudmundsson.

  1. 1. Alternative approaches to moisture transfer in building materials : the use of natural stable isotopes and tracer gas

    Author : Kjartan Gudmundsson; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; moisture transfer; Building engineering; Byggnadsteknik;

    Abstract : .... READ MORE

  2. 2. Alternative methods for analysing moisture transport in buildings : Utilisation of tracer gas and natural stable isotopes

    Author : Kjartan Gudmundsson; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; tracer gas; water vapour permeability; diffusion; surface diffusion; isotopic analysis; deuterium; oxygen-18; fractionation; vapour barrier; transient numerical modelling of diffusion; Building engineering; Byggnadsteknik;

    Abstract : New methods, based on tracer gas measurements and isotopicanalysis can be used to evaluate the moisture properties ofbuilding materials and provide the means for forensic analysisof the origins and history of excessive water in buildings, theimmediate practical consequences of which will be the abilityto improve the moisture performance of constructions. It is shown, in theory and through measurements how thewater vapour permeability of porous building materials can witha good degree of accuracy be estimated with tracer gasmeasurements that provide an efficient alternative to the cupmethod. READ MORE

  3. 3. Air Gap Method : Air-Gaps in Building Construction to avoid Dampness & Mould

    Author : Tord af Klintberg; Folke Björk; Kjartan Gudmundsson; Jesper Arfvidsson; KTH; []
    Keywords : humidity; air gaps; water damage; convection; building; construction;

    Abstract : .... READ MORE

  4. 4. Environmental Impact of Concrete Structures - with Focus on Durability and Resource Efficiency

    Author : Nadia Al-Ayish; Folke Björk; Kjartan Gudmundsson; Katarina Malaga; Otto During; Katja Fridh; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Life cycle assessment; environmental impact; concrete structures; resource efficiency; durability; supplementary cementitious materials; Civil and Architectural Engineering; Byggvetenskap;

    Abstract : Concrete is essential for the construction industry with characteristic properties that make it irreplaceable in some aspects. However, due to the large volumes consumed and the energy intense cement clinker production it also has a notable climate impact. READ MORE

  5. 5. An Approach Towards Sustainable Building

    Author : Navid Gohardani; Folke Björk; Kjartan Gudmundsson; Göran Lindahl; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Sustainability; Built environment; Sustainable renovation; High-efficient insulation materials; Sweden Green Building Council; Vacuum Insulation Panels VIP ; Decision making; GreenBuilding; Early stage; Stakeholders; A Concept for promotion of sustainable retrofitting and renovation in Early Stages ACES ; Early Stage Primary Energy Estimation Tool ESPEET ;

    Abstract : The motivation for development of energy efficiency and implementation of novel advanced materials applied in buildings can be traced to increasing energy costs in conjunction with an enhanced environmental awareness among people. This doctoral dissertation presents contributions towards sustainable building, where factors such as building technology, energy efficiency in buildings, workers' health issues during construction measures, and certain economic considerations for renovation of buildings have been considered. READ MORE