Search for dissertations about: "Aggregates"

Showing result 1 - 5 of 580 swedish dissertations containing the word Aggregates.

2. 1. AIR CLASSIFICATION OF FINE AGGREGATES

   Author : Robert Johansson; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CFD; Fines; Manufactured sand; Aggregates; Air classification; Concrete;

   Abstract : Aggregates are 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 aggregates for concrete production in Sweden. READ MORE

4. 2. Aggregates in Concrete Mix Design

   Author : Yahya Ghasemi; Mats Emborg; Andrzej Cwirzen; Martin Nilsson; Gram Hans-Erik; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mix design; water layer theory; particle packing; aggregates; specific surface area; Byggproduktion; Construction Engineering and Management;

   Abstract : The importance of studying the behaviour and properties of concrete can be highlighted by considering the fact that concrete is the most used man-made material in the world. The very first step in making concrete is its mix design and deciding the type and amount of constitutes used in the production of concrete which should fulfil the requirements of the final product. READ MORE

5. 3. Control factors of the marine nitrogen cycle : The role of meiofauna, macrofauna, oxygen and aggregates

   Author : Stefano Bonaglia; Patrick Crill; Volker Brüchert; Per Hall; Chritoph Humborg; Risgaard-Petersen Nils; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Nitrogen cycle; denitrification; DNRA; anammox; anoxia; hypoxia; eutrophication; meiofauna; macrofauna; aggregates; cyanobacteria; Baltic Sea; geokemi; Geochemistry;

   Abstract : The ocean is the most extended biome present on our planet. Recent decades have seen a dramatic increase in the number and gravity of threats impacting the ocean, including discharge of pollutants, cultural eutrophication and spread of alien species. READ MORE

6. 4. Compression mechanics of pharmaceutical aggregates : Studies on the tabletting of spheronised aggregates with varying composition and porosity

   Author : Fredrik Nicklasson; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmacy; FARMACI; PHARMACY; FARMACI; galenisk farmaci; Pharmaceutics;

   Abstract : The thesis investigated the tabletting behaviour of aggregates of different porosity and material composition, and focused on the role of the compression mechanics of the aggregates as a link between their structure and composition and the structure and functionality of tabletsformed from them. The aggregates studied all responded to compression by deformation and densification. READ MORE

7. 5. Towards a pre-verified EPD tool with simulation capabilities for the aggregates industry

   Author : Panagiota Papadopoulou; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; EPD; pre-verified EPD tool; aggregates; process simulations; crushing plants; Plantsmith; LCA;

   Abstract : Aggregates are an indispensable component in the development of societies as they are the basic materials for most buildings and infrastructure projects. Therefore, understanding and taking actions regarding their environmental impact is necessary for the industry’s sustainable development and climate neutrality. READ MORE