A novel undrained saturation method for triaxial testing of cohesive specimens
A novel undrained saturation method for triaxial testing of cohesive specimens
In triaxial testing, achieving saturation of cohesive specimens obtained below the water table is paramount. ISO and ASTM standards advocate back pressure methods, yet these pose risks of sample damage and extended saturation periods, leading to reduced effective stresses and prolonged consolidations. To counter these drawbacks, an undrained saturation technique is proposed that aims to preserve specimen integrity and expedite saturation and consolidation times. Initial trials on over 90 overconsolidated triaxial specimens confirmed an average time reduction of 7 days for saturation compared to traditional methods. Reduced consolidation times, maintaining in situ stresses, further amplified time savings. Several labs, upon receiving instructions, consistently reproduced the method, reducing saturation times significantly.
A. Rismanchian; Abbass Tavallali
18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)
A - New developments on structural design
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