Sökning: "Aggregate production"

Visar resultat 1 - 5 av 98 avhandlingar innehållade orden Aggregate production.

  1. 1. A Life Cycle Approach to Environmental Sustainability in Aggregate Production Systems

    Författare :Christina Lee; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Aggregates; Gravel; Sand; LCA; Production Systems; Sustainability; Life Cycle Assessment; Environmental Management; EPDs; Quarries; Tool Development; Environmental Impact; Environmental Product Declarations; Construction Products;

    Sammanfattning : Rock materials, such as sand, gravel, and crushed rock, serve as the foundation of our society. Known collectively as aggregates, these materials are essential for building foundations, concrete, and roads, making them the second most extracted material globally after water. LÄS MER

  3. 2. Essays on Macroeconomics: Wage Rigidity and Aggregate Fluctuations

    Författare :Maria Olsson; Mikael Carlsson; Oskar Nordström Skans; Christian Merkl; Uppsala universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Wages; Unemployment; Monetary Non-Neutrality; Collective Bargaining; Production Networks; Micro-to-Macro;

    Sammanfattning : Essay I: I use Swedish micro data to analyze how firms adjusted their labor costs in response to the large drop in aggregate demand during the Great Recession. For identification, I exploit that the recession primarily hit export-dependent firms in Sweden. LÄS MER

  4. 3. The geological conditions for aggregate production, with special focus on blasting and fines production

    Författare :Mathias Jern; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; blasting; in situ block size distribution; fines; aggregates; damage; micro crack; fracture; fragmentation;

    Sammanfattning : .... LÄS MER

  5. 4. An investigation into some aspects for foamed bitumen technology

    Författare :May Namutebi; Björn Birgisson; Alvaro Guarin; Umaru Bagampadde; Baoshan Huang; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Foamed bitumen; Binder ageing; Aggregate coating; Compaction; Mix design; Aggregate porosity; Civil and Architectural Engineering; Byggvetenskap;

    Sammanfattning : Despite applications of foamed bitumen technology in pavement construction in various places around the world, there are still several aspects about this technology that are not clear. In addition, knowledge on foamed bitumen technology is mainly empirical and lacks scientific basis. LÄS MER

  7. 5. Dry Classification of Fine Aggregates for Concrete and Asphalt

    Författare :Robert Johansson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; concrete; asphalt; classification; aggregate;

    Sammanfattning : Aggregate is defined as particles of rock which in combination are used as a civil engineering material. It is used in bounded form in asphalt and concrete. Historically natural sand has been used as fine aggregate for concrete production in Sweden. LÄS MER