Sökning: "subgrade"

Visar resultat 1 - 5 av 9 avhandlingar innehållade ordet subgrade.

  1. 1. Moisture Influence on Structural Behaviour of Pavements Field and Laboratory Investigations

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Farhad Salour; KTH.; [2015]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Falling Weight Deflectometer FWD ; backcalculation; unbound material; subgrade; seasonal variation; moisture content; spring-thaw; drainage; pavement stiffness; field test; pavement instrumentation; resilient modulus; permanent deformation; repeated load triaxial test; unsaturated soil; matric suction.; Civil and Architectural Engineering; Byggvetenskap; Transportvetenskap; Transport Science;

    Sammanfattning : The structural behaviour of pavements in cold regions can considerably be affected by seasonal variation in environmental factors such as temperature and moisture content. Along with the destructive effect of heavy traffic loads, climatic and environmental factors can considerably contribute to pavement deterioration. LÄS MER

  2. 2. Computational Railway Dynamics - Integrated Train - Track - Subgrade Modeling and Simulations

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Håkan Lane; [2007]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The primary objective of the thesis has been to extend the capabilities for computational modeling, prediction and simulation of the elastic response of the train, track structure and soil in railway systems. The industrial background is the high level of ground borne vibrations reported from citizens as a consequence of train traffic (in particular from high speed trains) in several Swedish locations. LÄS MER

  3. 3. Rail vehicle – track structure – subgrade computational analysis - Integrated finite element techniques

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Håkan Lane; [2005]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : .... LÄS MER

  4. 4. Permanent deformation in fine-grained subgrade material and accelerated pavement tests

    Detta är en avhandling från Institutionen för infrastruktur och samhällsplanering

    Författare :Niclas Odermatt; KTH.; [2000]
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  5. 5. Effect of Compactive Effort on the Behaviour of a Gypsiferous Subgrade Soil

    Detta är en avhandling från Baghdad : Al-Nahrain University, College of Engineering, Civil Engineering Department

    Författare :Dina K Kuttah; [2004]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gypsum; Soil; Clay; Compaction; California bearing ratio; Triaxial; Moisture content; Pore water pressure; 62 Road: Soil mechanics; 62 Road: Soil mechanics;

    Sammanfattning : Presented in this thesis is a study of the effect of compactive effort and long-term soaking on strength, stiffness and deformation characteristics of a gypsiferous subgrade soil from Kirkuk city.The tested soil is sandy lean clay (CL) according to the Unified Soil Classification System and A-6 (6) soil according to AASHTO soil classification system. LÄS MER