Search for dissertations about: "About concrete"

Showing result 11 - 15 of 219 swedish dissertations containing the words About concrete.

  2. 11. The influence of ageing on the salt-frost resistance of concrete

    Author : Peter Utgenannt; Avdelningen för Byggnadsmaterial; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materiallära; materialteknik; Building construction; Material technology; freeze thaw testing; hydration; field exposure; carbonation; drying; Byggnadsteknik; ageing; salt-frost resistance; Concrete;

    Abstract : 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. READ MORE

  4. 12. Modelling and simulation of factors influencing on-site construction of concrete frameworks : Studying the effects of resource allocation, weather conditions, and climate-improved concrete

    Author : Robert Larsson; Avdelningen för Konstruktionsteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Discrete-event simulation DES ; Concrete; Structural frames; Productivity; Resource use; Weather; Carbon Emissions;

    Abstract : Concrete is the most common material used to build the structural framework in multistory buildings. However, the construction works carried out on the building site are affected by many different factors that may reduce productivity. READ MORE

  5. 13. Microbial biofilm communities associated with degradation of sprayed concrete in subsea tunnels

    Author : Sabina Karacic; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; marine environment; subsea tunnels; surface structure; biofilm; steel fibers; metagenomics.; microbially induced deterioration; amplicon sequencing; concrete;

    Abstract : Deterioration of concrete leads to reduced structural strength implying high societal challenge with huge economic impact. In the Oslofjord subsea tunnel, complex microbial biofilm activity together with abiotic attack from saline groundwater are responsible for concrete matrix degradation and steel fiber corrosion. READ MORE

  6. 14. Environmental Actions and Response - Reinforced Concrete Structures exposed in Road and Marine Environments

    Author : Anders Lindvall; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; reinforcement corrosion; marine environment; frost action; bridges; concrete; chloride; de-icing salt; environmental actions; road environment; moisture conditions;

    Abstract : The expenses for repair, maintenance and remediation of existing concrete structures have significantly increased. A large proportion of these expenses are due to problems related to a lacking durability of the structure. READ MORE

  7. 15. Automated performance monitoring of concrete dams

    Author : Christian Bernstone; Teknisk geologi; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hydrogeologi; teknisk geologi; geographical and geological engineering; Maintenance; Uplift pressure; Crack; Deformation; Image processing; Dams; Condition monitoring; Time-domain reflectometry; GPS; Image analysis; Concrete structures; teknisk geografi; Hydrogeology;

    Abstract : The Swedish hydropower industry operates a large number of power plants and dams geographically spread over the country. The level of safety of a specific dam is to a large extent determined during the design and construction phases that in the case of Swedish hydropower plants took place several decades ago. READ MORE