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Geomechanics and Engineering Volume 12, Number 4, April 2017 , pages 561-577 DOI: https://doi.org/10.12989/gae.2017.12.4.561 |
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Consolidation deformation of Baghmisheh marls of Tabriz, Iran |
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Shahrokh Jalali-Milani, Ebrahim Asghari-Kaljahi, Ghodrat Barzegari and Masoud Hajialilue-Bonab
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| Abstract | ||
| Vast parts of the east of Tabriz city have been covered by Baghmisheh formation marls. These marls can be classified into three types based on their color as identified in yellow, green, and gray marls. Many high-rise buildings and other projects were founded and now is constructing on these marls. Baghmisheh formation marls are classified as stiff soil to very weak rock, therefore they undergo considerable consolidation settlement under foundation loads. This study presents the physical properties and consolidation behavior of these marls. According to the XRD tests, major clay minerals of marls are Illite, Kaolinite, Montmorillonite and Chloride. Uniaxial compressive strength are 100-250, 300-480 and 500-560 kPa for yellow, green and gray marls, respectively. Consolidation and creep behavior of Baghmisheh marls investigated by using of one dimensional consolidation apparatus under stress level up to 5 MPa. The results indicate that yellow marls have high compressibility, settlement and deformation modules. Green marls have an intermediate compressibility and settlement and while gray marls have low compressibility and settlement and from the foundation point of view have high stability. According to the creep test results, all types of marls have not been entered to progressive creep phase up to pressure 5 MPa. | ||
| Key Words | ||
| Tabriz; consolidation; creep; Baghmishehmarls | ||
| Address | ||
| (1) Shahrokh Jalali-Milani, Ebrahim Asghari-Kaljahi, Ghodrat Barzegari: Department of Earth Sciences, University of Tabriz, Iran; (2) Masoud Hajialilue-Bonab: Department of Civil Engineering, University of Tabriz, Iran. | ||