Search for dissertations about: "cement composites"

Showing result 1 - 5 of 8 swedish dissertations containing the words cement composites.

  1. 1. Calcium aluminate cement as dental restorative Mechanical properties and clinical durability

    University dissertation from Umeå : Umeå universitet. Institutionen för odontologi

    Author : Karin Sunnegårdh-Grönberg; Umeå universitet.; [2004]
    Keywords : mechanical properties; clinical; restorations; ceramic; cement; resin composite; adaptation; SEM; odontologi; Odontology;

    Abstract : In 1995, the Swedish government recommended the discontinuation of amalgam as restorative in paediatric dentistry. Because the mercury content in amalgam constitutes an environmental hazard, its use has declined. READ MORE

  2. 2. Steel fibrous cement based composites: material and mechanical properties behavior in the anchorage zones of prestressed bridges

    University dissertation from Stockholm : Byggvetenskap

    Author : Lutfi Ay; KTH.; [2004]
    Keywords : process improvement of bridges; prestressed concrete; high performance concrete;

    Abstract : This PhD thesis is divided into two parts. Part one dealswith the development of the material and the mechanicalproperties of Steel Fibrous Cement Based Composites (SFCBC) forimproving bridge design and construction. It familiarizes thehydration mechanisms of the high performance concrete with thehelp of Powers´ and Jensen´s models. READ MORE

  3. 3. Strengthening of concrete beams using cementitious carbon fibre composites

    University dissertation from Stockholm : Byggvetenskap

    Author : Anders Wiberg; KTH.; [2003]
    Keywords : civil; materials science; textile technology;

    Abstract : 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. READ MORE

  4. 4. Strengthening of concrete structures by the use of mineral based composites system and design models for flexure and shear

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Thomas Blanksvärd; Luleå tekniska universitet.; [2009]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Structural Engineering; Konstruktionsteknik;

    Abstract : A great number of society's resources are invested in existing concrete structures, such as bridges, tunnels, different kind of buildings etc. All of these structures have both an expected function and an expected life span. However, both the function and the life span can be influenced by external factors, e.g. READ MORE

  5. 5. Influence of a dental ceramic and a calcium aluminate cement on dental biofilm formation and gingival inflammatory response

    University dissertation from Umeå : Odontologi

    Author : Katarina Konradsson; Umeå universitet.; [2007]
    Keywords : cements; ceramics; cytotoxicity; dental biofilm; gingivitis; interleukin-1; oral hygiene; resin composite;

    Abstract : Dental restorative materials interact with their surrounding oral environment. Interaction factors can be release of toxic components and/or effects on biofilm formation and gingiva. In the end of the nineties, a calcium aluminate cement (CAC) was manufactured as a “bioceramic” alternative to resin composite. READ MORE