Field suction measurements are especially important for pavements constructed on unsaturated expansive soils. Because these subgrade soils can experience high suction during dry seasons, field sensors that can measure high soil suctions are necessary. In this research, thermal conductivity-based soil suction sensors were evaluated for matric suction measurements at several sites. Laboratory suction measurements with the filter paper method were compared with the field suction measurements with the sensors. Soil water characteristic curves derived from the laboratory and field measurements agreed closely. Volume change measurements using swell and shrinkage tests were conducted separately on the subgrade soils retrieved from the instrumented test sites. The laboratory and field suction data need an adjustment or shift of the time factor to obtain comparable values at high suctions. The influence of total suction on the volumetric swell and shrinkage characteristics of the field subsoils were also addressed.


    Zugriff

    Download

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Comparisons between Field and Laboratory Suction Measurements of Expansive Clays


    Weitere Titelangaben:

    Transportation Research Record: Journal of the Transportation Research Board


    Beteiligte:


    Erscheinungsdatum :

    01.01.2008




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Theory of moisture movement in expansive clays

    Lytton, Robert L. | TIBKAT | 1969


    Comprehensive Field Studies to Address the Performance of Stabilized Expansive Clays

    Puppala, Anand J. / Pillappa, Gautham S. / Hoyos, Laureano R. et al. | Transportation Research Record | 2007


    Comprehensive Field Studies to Address the Performance of Stabilized Expansive Clays

    Puppala, A. J. / Pillappa, G. S. / Hoyos, L. R. et al. | British Library Conference Proceedings | 2007


    Continuum theory of moisture movement and swell in expansive clays

    Nachlinger, R. Ray / Lytton, Robert L. | TIBKAT | 1969