Field and laboratory behaviour of Khor Al-Zubair clay, Iraq.

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  • Field and Laboratory Behaviour of Khor
  • Field and laboratory behavior of Khor Al- Zubair clay, Iraq

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Abstract

This paper describes the geotechnical properties of Khor Al-Zubair clay distributed along the old river channel of the Shatt Al-Arab River in southern Iraq.In-situ and laboratory tests indicated that Khor Al-Zubair clay is an overconsolidated clay with overconsolidation ratio decreasing with depth. The following two were suggested from an analysis of the various tests results : -1) The overconsolidation state of Khor Al-Zubair clay was not caused by geologic stress release but may be caused another factors such as aging effects, dring, seepage forces.2) Overconsolidation resulting from factors such as aging effects, dring, seepage forces tends to decrease rather than increase the value of K0.The paper also describes the following geotechnical properties of this caly; 1) undrained strength, 2) anisotropy in undrained strength and 3) strength decrease due to rebound.

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