Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Consolidation and creep phenomena in a sand-bentonite mixture under controlled suctions
Investigating the creep of expansive unsaturated soils is necessary to simulate the long-term deformations that can cause structural failures. Hence, this paper presents a laboratory investigation of the consolidation and creep of an artificially prepared sand-bentonite mixture consisted of 40% commercial bentonite at controlled suction levels of zero, 100 kPa, 200 kPa, 400 kPa, and 800 kPa. A modified osmotic oedometer was utilised to apply vertical net stress and the desired matric suctions. After conducting the consolidation tests on samples, the last loading step was kept for extra 72 h to assess the creep behaviour of expansive unsaturated samples, and the creep coefficients (Cα) at different suctions were calculated. The results showed that the swelling index (Cs) gradually decreased with an increase in the amount of suction and a negligible value of the parameter is observed at higher levels of suction. Also, the creep coefficient decreased with an increase in the amount of suction value.
Consolidation and creep phenomena in a sand-bentonite mixture under controlled suctions
Investigating the creep of expansive unsaturated soils is necessary to simulate the long-term deformations that can cause structural failures. Hence, this paper presents a laboratory investigation of the consolidation and creep of an artificially prepared sand-bentonite mixture consisted of 40% commercial bentonite at controlled suction levels of zero, 100 kPa, 200 kPa, 400 kPa, and 800 kPa. A modified osmotic oedometer was utilised to apply vertical net stress and the desired matric suctions. After conducting the consolidation tests on samples, the last loading step was kept for extra 72 h to assess the creep behaviour of expansive unsaturated samples, and the creep coefficients (Cα) at different suctions were calculated. The results showed that the swelling index (Cs) gradually decreased with an increase in the amount of suction and a negligible value of the parameter is observed at higher levels of suction. Also, the creep coefficient decreased with an increase in the amount of suction value.
Consolidation and creep phenomena in a sand-bentonite mixture under controlled suctions
Ajdari, Mohsen (Autor:in) / Niknam, Ebrahim (Autor:in) / Bahmyari, Hossein (Autor:in) / Esfandiari, Zahra (Autor:in)
Geomechanics and Geoengineering ; 17 ; 106-117
02.01.2022
12 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
Unified Consolidation-Creep-Collapse Phenomena in an Unsaturated Sand-Bentonite Mixture
| British Library Conference Proceedings | 2023
Suctions, stresses and strengths in unsaturated sand-bentonite
| Online Contents | 2002
Suctions, stresses and strengths in unsaturated sand-bentonite
| British Library Conference Proceedings | 2002
Suctions, stresses and strengths in unsaturated sand-bentonite
| British Library Online Contents | 2002