Influence of grain shape on stress-dilatancy parameters
Granular Matter, cilt.23, sa.2, 2021 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 23 Sayı: 2
- Basım Tarihi: 2021
- Doi Numarası: 10.1007/s10035-021-01098-2
- Dergi Adı: Granular Matter
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Compendex, INSPEC, zbMATH, Civil Engineering Abstracts
- Anahtar Kelimeler: Stress-dilatancy, Sand, Grain shape, Gradation, Stress path, Critical state friction angle
- Boğaziçi Üniversitesi Adresli: Evet
Özet
This study experimentally investigates the influences of grain shape and gradation on stress-dilatancy parameters. For this purpose, consolidated-drained triaxial tests are conducted on five different granular materials. Specimens are sheared following two different stress paths; axial compression and lateral extension, in order to monitor the influence of stress path on the investigated problem. For each soil, grain shapes, sizes and stress-dilatancy parameters are experimentally determined. Moreover, available data in literature for other sands are compiled with the data of this study. This allows the investigation of the dependence of stress-dilatancy parameters on gradation and grain shape characteristics. Especially with this study, variations of stress-dilatancy constants with grain characteristics are examined. Statistically significant relationships are obtained for predicting stress-dilatancy parameters as functions of average grain shapes. On the other hand, influences of stress path and gradation on stress-dilatancy response are experimentally considered. Finally, compiled and determined data used in the development of the relationships are provided in the form of tables. Graphic abstract: [Figure not available: see fulltext.]