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2013 (Vol. 5, Issue: 19)
Article Information:

Method Cement Post-grouting to Increase the Load Capacity for Bored Pile

Van Loc Nguyen, Lei Nie and Min Zhang
Corresponding Author:  Van Loc Nguyen 

Key words:  Bored pile, load capacity, post-grouting, , , ,
Vol. 5 , (19): 4727-4732
Submitted Accepted Published
September 27, 2012 December 11, 2012 May 10, 2013
Abstract:

Drilled shafts foundations are used as an indispensable solution for long span bridges in Vietnam. In order to increase the bearing capacity, aside from the increasing of the pile length and diameter, an interested way now is treatment of pile bases after concrete placement. This study is aimed at investigating the defect at the bottom of the bored pile from the sonic test. The injection of hight pressure of cement grout to the shaft and tip of the defected bored pile was conducted to increase the bearing capacity of pile. The bearing capacity of defected bored pile is calculated by the TCXD-205:1998 an finite element mothod. After post-grouting technique done, the soil investigation tests have been carried out to define the properties of treated soils. The analytic mothod, finite element method an load test also have been applied to determine the bearing capacity of treated bored pile. The results show that the post-grouting to the shaft and tip of pile can increase two times of bearing capacity of defected bored pile and about 20% compared to the normal bored pile.
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  Cite this Reference:
Van Loc Nguyen, Lei Nie and Min Zhang, 2013. Method Cement Post-grouting to Increase the Load Capacity for Bored Pile.  Research Journal of Applied Sciences, Engineering and Technology, 5(19): 4727-4732.
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ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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