| Author | Tran Van My Canh |
| Note | A research study submitted in partial fulfillment of the requirements for the degree of
Master Engineering (Professional) in Geotechnical Engineering and Management, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | In the soft ground improvement, settlement and degree of consolidation calculation in the
field is very important, it is bases for design quality assessment. For this purpose,
monitoring instruments are installed to record settlement and the pore water pressure
dissipation data such as: settlement plate, extensometer and piezometer. Based on recorded
data, degree of consolidation and coefficient of consolidation are estimated for the soft clay
that is treated by preloading surcharge with PVD, the Asaoka’s method is used for data
analysis of settlement plates and extensometers. The horizontal consolidation coefficient
obtained from monitoring data analysis (which is denoted ch) then compare with the
vertical consolidation coefficient (cv) at normal-consolidated state (NC) obtained from
consolidation test in the laboratory. For the study site, the ch value is about 3.6 m2/yr with
PVD of 1.5m triangle pattern spacing and kh/ks = 2, the ch value is about 3.1 times as much
as cv (NC) value. Furthermore, the ch value is also estimated by piezocone dissipation test
[which is denoted ch (CPTu)] in the field. The test was done together with the soil
investigation work. This value then compare with the vertical consolidation coefficient (cv)
at over-consolidated state (OC) obtained from consolidation test. For this site, the ch
(CPTu) is estimated about 21 m2/yr and about 5.5 times as much as cv (OC) value. |
| Year | 2011 |
| Type | Research Study Project Report (RSPR) |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Geotechnical Engineering (GE) |
| Chairperson(s) | Bergado, Dennes. T. ; |
| Examination Committee(s) | Noppadol Phien-wej;Pham Huy Giao; |
| Scholarship Donor(s) | AnhVu Geotechnical and Civil Engineering Co., Ltd
Viet Nam; |