Abstract
This paper presents the experimental study of Soil-Cement Pile (SCpile) by wet mixing method in sandy soils, with the typical project at An Trung Complex apartment, Da Nang city, Vietnam. With the characteristic of soil layers is sandy soil, the strength of laboratory stabilized soils with the amount of cement from 150¸300 kg/m3 was determined. Simultaneously, the authors also performed the experiments of 20 test piles collected from the site which has cement content about 280 kg/m3 and the unconfined compressive strength qu= (4.5-6.0) MPa. After that, a full-scale model static axial compressive load tests of two single piles and a group of four piles with diameter 800 mm and 12 m length were also conducted. The experiment results show that the bearing capacity of every single pile is 1.200 kN with settlement 6.93 mm and the group of four CSpiles is 3.200 kN with settlement 5.03 mm. The results presented in the paper illustrate that SCpile is the suitable solution for foundation construction process with low cost and saving time for high rise buildings. The result shows a capable application of soil cement piles for support of high-rise buildings.
Highlights
Apartment complex construction for infrastructure projects has increased considerably during the past few decades in coastal and lowland regions where soft clay is popular
This paper presents the experimental study of Soil-Cement Pile (SCpile) by wet mixing method in sandy soils, with the typical project at An Trung Complex apartment, Da Nang city, Vietnam
The results presented in the paper illustrate that SCpile is the suitable solution for foundation construction process with low cost and saving time for high rise buildings
Summary
Apartment complex construction for infrastructure projects has increased considerably during the past few decades in coastal and lowland regions where soft clay is popular. A wide range of ground improvement techniques has been developed to increase the bearing capacity of soft ground and thereby to increase the use of the soft ground for the construction activities. Solutions based on rigid-piles are available for the soil to increase the bearing capacity which yields uneconomical design. Soil-cement pile (SCpile) are used as a hardening pile. This technique is an economical alternative compared to the rigid pile or inclusions. Their performance under loading in ultimate limit state or serviceability conditions has so far received only limited investigation
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