Sökning: "unbound material"

Visar resultat 11 - 15 av 16 avhandlingar innehållade orden unbound material.

1. 11. Packing theory-based Framework for Performance Evaluation of Unbound Granular Materials

   Författare :Tatek Fekadu Yideti; Björn Birgisson; Denis Jelagin; Tutumluer Erol; KTH; []
   Nyckelord :;

   Sammanfattning : Enhancing the load bearing quality of granular layers is fundamental to optimize the structural performance of the pavements. Unbound granular materials are one of the most used materials in the base layers of pavements. There have been growing interests on the behavior of unbound granular material in road base layers. LÄS MER

3. 12. Water in roads: Flow paths and pollutant spread

   Författare :Hedi Rasul; B. Olofsson; Helen Kristine French; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; De-icing salt; Road; Tracer test; ERT; Water content; Road pollutants; Flow pathways; Land and Water Resources Engineering; Mark- och vattenteknik;

   Sammanfattning : For better road construction and maintenance while minimising damage to the environment and groundwater, it is essential to monitor and model hydrological impacts on roads and consider pollution of groundwater. Water content in unbound material in road layers changes continuously and water flow usually occurs along pathways that are the main corridors for pollutant spread to groundwater. LÄS MER

4. 13. Studies on the enantioselective disposition of amlodipine : A challenge in bioanalysis

   Författare :Martin Josefsson; Martin Ahnoff; Linköpings universitet; []
   Nyckelord :MEDICINE; MEDICIN;

   Sammanfattning : To study the disposition of the enantiomers of the calcium channel blocker amlodipine in human plasma, an enantioselective high performance liquid chromatographic (HPLC) assay was developed. Several HPLC techniques such as chiral ion-pair forming, chiral derivatisation and direct separation on chiral columns were evaluated. LÄS MER

5. 14. Studies of the free mica properties and its influence on quality of road constructions

   Författare :Dimitri Kondelchuk; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Geoteknik; Soil Mechanics;

   Sammanfattning : The thesis presents series of laboratory studies of aggregates containing mica minerals obtained from aggregate producers located throughout Sweden. The main idea of the research was to study physical properties and behaviour of free mica particles in unbound granular products of crushed rock materials. LÄS MER

7. 15. Life Cycle Impacts of Road Infrastructure : Assessment of energy use and greenhouse gas emissions

   Författare :Sofiia Miliutenko; Anna Björklund; Robert Karlsson; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cumulative Energy Demand CED ; Global Warming Potential GWP ; Life Cycle Assessment LCA ; road infrastructure; strategic planning;

   Sammanfattning : Road infrastructure is essential in the development of human society, but has both negative and positive impacts. Large amounts of money and natural resources are spent each year on its construction, operation and maintenance. Obviously, there is potentially significantenvironmental impact associated with these activities. LÄS MER