Determination of some physical and dynamical properties of clayey soils distribution in Bac Bo delta by piezocone penetration test (CPTu)
- Authors: Phong Van Nguyen 1
Affiliations:
1 Trường Đại học Mỏ - Địa chất
- Received: 12th-Sept-2012
- Revised: 13th-Oct-2012
- Accepted: 30th-Oct-2012
- Online: 30th-Oct-2012
- Section: Geology - Mineral
Abstract:
This paper presents the method of determining unit weight (), stress history (c), overconsolidation ratio (OCR), pressure coefficient (Ko), the cyclic modulus (Gd) and the cyclic stress ratio (CSR) in accordance with the CPTu results; simultaneously applied to clayey soils are distributed in Thanh Tri (Hanoi), Thuy Nguyen, Dinh Vu, (Hai Phong) and Thai Binh I Thermal power project. Initial results show that: determining unit weight by Larson method is suitable for soft soil; With soft soil k = 0,25; Gd =9 – 30Mpa; CSR = 0,1; With stiff soil, k = 0,1; Gd >200Mpa; CSR = 0,2
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