Sökning: "High-strength concrete"

Visar resultat 16 - 20 av 29 avhandlingar innehållade orden High-strength concrete.

  1. 16. Use of Macro Basalt Fibre Concrete for Marine Applications

    Författare :Ali Mohammadi Mohaghegh; Johan L. Silfwerbrand; Vemund Årskog; Anniken T.Karlsen; Björn Täljsten; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Concrete Barges; Reinforcement Corrosion; Floating Structures; Macro Basalt Fibres; Self-Compacting Fiber Concrete; Byggvetenskap; Civil and Architectural Engineering;

    Sammanfattning : Deterioration of concrete structures due to the corrosion of embedded steel is a well-known universal problem. Norway with its numerous bridges, ports, offshore and floating structures along its coastline, is also encountered with corrosion degradation. LÄS MER

  3. 17. Fracture mechanics analysis of concrete structures

    Författare :Ulf Ohlsson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Structural Engineering; Konstruktionsteknik;

    Sammanfattning : This thesis presents results from numerical and analytical analyses of concrete structures as well as results from laboratory tests. Numerical methods based on the finite element method and fracture mechanics are used. The thesis comprises five papers and a general introductory part. LÄS MER

  4. 18. Measurement and modelling of young concrete properties

    Författare :Peter Fjellström; Christer Isgren; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Structural Engineering; Konstruktionsteknik;

    Sammanfattning : The main aim of this thesis is to refine models for strength and heat development of the young concrete, and evaluate if developed models at Luleå University of Technology (LTU) for creep, autogenous shrinkage and thermal dilation needs refinement. These are of importance in hardening control and in crack control of a concrete structure. LÄS MER

  5. 19. Structural concrete elements subjected to air blast loading

    Författare :Johan Magnusson; Anders Ansell; Bengt Vretblad; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Building engineering; Byggnadsteknik;

    Sammanfattning : In the design of structures to resist the effects of air blast loading or other severe dynamic loads it is vital to have large energy absorbing capabilities, and structural elements with large plastic deformation capacities are therefore desirable. Structures need to be designed for ductile response in order to prevent partial or total collapse due to locally failed elements. LÄS MER

  7. 20. Strengthening of concrete beams using cementitious carbon fibre composites

    Författare :Anders Wiberg; KTH; []
    Nyckelord :civil; materials science; textile technology;

    Sammanfattning : The research described in this thesis deals with the use ofcement-based carbon fibre reinforced composites forstrengthening of existing structural concrete. There is a large world-wide need for simple and reliablemethods to repair and strengthen aging infrastructure andbuildings. LÄS MER