Ground Improvement by Deep Cement Mixing Method

Synopsis:

Soft ground under the sea often presents challenges for supporting seawall or reclamation without treatment if no dredging is implemented. Ground treatment is often required to improve the engineering properties of weak soils to enhance strength and bearing capacity for supporting the intended structures. Deep soil mixing with addition of binder is one of the ground treatment method that has been widely used in Asia and worldwide.

The speaker has recently been involved in a large-scale ground improvement project in Hong Kong, using the deep cement mixing method. This seminar will discuss the characteristics of cement-soil mixture in the laboratory environment as well as performance of the field mixed soil using the same binder material. A detailed test program was developed to evaluate the strength and other properties of the cement-soil mixtures by using various amounts of binder and water to binder ratios. A series of unconfined compressive strength…