Sökning: "pavement stiffness"

Visar resultat 1 - 5 av 12 avhandlingar innehållade orden pavement stiffness.

  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. Surface Wave Testing of Pavements

    Detta är en avhandling från Nils Ryden, Department of Engineering Gelogy, Lund Institute of Technology, Lund University, BOX 118, 22100 Lund

    Författare :Nils Rydén; Lunds universitet.; Lund University.; [2004]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; geographical and geological engineering; Hydrogeologi; teknisk geologi; teknisk geografi; Hydrogeology; inversion; guided waves; road; pavement; Surface waves; non-destructive testing;

    Sammanfattning : A novel approach for surface wave testing of pavements is presented. It is a non-destructive testing (NDT) technique that can be used to obtain the thickness and stiffness properties of the different layers in a pavement. LÄS MER

  3. 3. Characterising the Deformation Behaviour of Unbound Granular Materials in Pavement Structures

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

    Författare :Mohammad Shafiqur Rahman; KTH.; [2015]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; unbound granular materials; resilient modulus; permanent deformation; moisture; model; multistage; repeated-load triaxial test; Transportvetenskap; Transport Science; Civil and Architectural Engineering; Byggvetenskap;

    Sammanfattning : Unbound granular materials (UGMs) used in the base and sub-base layers of flexible pavements play a significant role in the overall performance of the structure. Proper understanding and characterization of the deformation behaviour of UGMs in pavement structures are, therefore, vital for the design and maintenance of flexible pavements. LÄS MER

  4. 4. Mechanistic-Empirical Modeling of Permanent Deformation in Asphalt Concrete Layers

    Detta är en avhandling från Department of Technology and Society, Lund University

    Författare :Erik Oscarsson; [2011]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; permanent deformation; modeling; Mechanistic-Empirical; rutting; asphalt concrete; full-scale pavements;

    Sammanfattning : Popular Abstract in Swedish De allra flesta av oss bilister har någon gång kört på en väg med tydliga spår i vägytan. Man märker tydligt hur både komforten och säkerheten minskar eftersom möjligheten att styra fordonet försämras. LÄS MER

  5. 5. Reliability-based Design Procedure for Flexible Pavements

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

    Författare :Yared Hailegiorgis Dinegdae; KTH.; [2015]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Top-Down fatigue cracking; asphalt mixture morphology; fracture mechanics; response surface; reliability analysis; load resistance factor design; Civil and Architectural Engineering; Byggvetenskap;

    Sammanfattning : Load induced top-down fatigue cracking has been recognized recently as a major distress phenomenon in asphalt pavements. This failure mode has been observed in many parts of the world, and in some regions, it was found to be more prevalent and a primary cause of pavements failure. LÄS MER