Search for dissertations about: "thesis in workability"

Showing result 1 - 5 of 35 swedish dissertations containing the words thesis in workability.

  2. 1. Wise Process Routes for Varying Feedstock in Base Metal Extraction : Modelling of a Peirce-Smith Converter and Investigation of Buildup Formation in an Electric Smelting Furnace

    Author : Andreas Lennartsson; Pekka Taskinen; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Process Metallurgy; Processmetallurgi;

    Abstract : Copper, like silver and gold, is one of the metals that are known to have been worked by some of the oldest civilisations on record. It is used forits unique properties such as corrosion resistance, good workability, high thermal conductivity and attractive appearance. READ MORE

  4. 2. Recycling of concrete in new structural concrete

    Author : Madumita Sadagopan; Andrzej Cwirzen; Högskolan i Borås; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; concrete recycling; sustainability; closed-loop recycling; recycled aggregates; compressive strength; workability mechanical pre-processing; secondary cementitious materials; green concrete; climate-optimized concrete; Resource Recovery; Resursåtervinning;

    Abstract : Concrete waste as crushed concrete aggregates (CCA) in structural concrete gives a new purpose and prolongs the technical life of the reference concrete accomplishing closed loop recycling. This research investigates CCA as aggregate replacement in an industrial reference concrete recipe as fine aggregate fractions and overall aggregate replacement. READ MORE

  5. 3. Inequalities and Age-Related Disadvantages in Late Working Life and Labour Market Exit in Sweden

    Author : Gülin Öylü; Andreas Motel-Klingebiel; Susanne Kelfve; Joop Schippers; Linköpings universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Social inequality; Late working life; Older workers; Labour market exit; Labour market attachment; Life course; Age-related disadvantages; Hiring of older workers; Sweden; Social ojämlikhet; Sent arbetsliv; Äldre arbetstagare; Utträde från arbetsmarknaden; Arbetsmarknadsanknytning; Livslopp; Åldersrelaterade nackdelar; Anställning av äldre arbetstagare; Sverige;

    Abstract : The participation of older individuals in the labour market has increased as a result of recent demographic and societal shifts, as well as reforms of pension and social security systems. However, employment inequalities in late working life and labour market exit persist. READ MORE

  6. 4. Investigation of Surface Formation in As-Cast and Homogenized 6xxx Aluminium Billets

    Author : Nazlin Bayat; Torbjörn Carlberg; Håkan Olin; Yanjun Li; Mittuniversitetet; []
    Keywords : DC casting; surface segregation; surface defects; intermetallic phase; phase transformation; homogenization;

    Abstract : The direct chill (DC) casting technique to produce billets for extrusion and ingots for rollingwas developed in the 1930s. The principle, which is still valid, is a two-stage cooling with a primary cooling at a mould surface followed by water spraying directly on the surface. READ MORE

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

    Author : Lutfi Ay; KTH; []
    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