Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effect of Desiccation Cracking on the Swell and Swell Pressure of Expansive Clay
Significant effort has been placed on the determination of swelling properties of expansive soils, such as swell pressure and swell potential. However, there are only a limited number of studies of expansive soil response that include the effect of desiccation cracking; most studies and methods of analysis have simply neglected the effect of cracks. At the same time that cracks provide a path for flow of water under positive head, the crack network in an expansive soil functions as swell-absorbent media (due to open spaces within the soil) which can reduce the total amount of vertical swell that the soil would experience. In this study, a laboratory investigation was carried out to quantitatively evaluate the effect of cracks on swell potential and swelling pressure. The presence of desiccation cracks was found to reduce the amount of swell and also reduce the swell pressure compared to intact, uncracked, specimens. The percentage reduction of swell potential and swell pressure was found to be a function of the volume of cracks and the applied net normal stress.
Effect of Desiccation Cracking on the Swell and Swell Pressure of Expansive Clay
Significant effort has been placed on the determination of swelling properties of expansive soils, such as swell pressure and swell potential. However, there are only a limited number of studies of expansive soil response that include the effect of desiccation cracking; most studies and methods of analysis have simply neglected the effect of cracks. At the same time that cracks provide a path for flow of water under positive head, the crack network in an expansive soil functions as swell-absorbent media (due to open spaces within the soil) which can reduce the total amount of vertical swell that the soil would experience. In this study, a laboratory investigation was carried out to quantitatively evaluate the effect of cracks on swell potential and swelling pressure. The presence of desiccation cracks was found to reduce the amount of swell and also reduce the swell pressure compared to intact, uncracked, specimens. The percentage reduction of swell potential and swell pressure was found to be a function of the volume of cracks and the applied net normal stress.
Effect of Desiccation Cracking on the Swell and Swell Pressure of Expansive Clay
Abbaszadeh, S. (Autor:in) / Houston, S. L. (Autor:in) / Zapata, C. E. (Autor:in)
Geotechnical and Structural Engineering Congress 2016 ; 2016 ; Phoenix, Arizona
08.02.2016
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Swell and Compressibility of Sand-Expansive Clay Mixtures
| British Library Conference Proceedings | 2014
Swell-shrinkage potential and prediction swell behavior of expansive clays
| British Library Conference Proceedings | 1997
Swell and Collapse of a Partially Saturated Expansive Clay
| British Library Conference Proceedings | 1994
Laboratory Swell Pressure Determination of Expansive Clays
| TIBKAT | 2021