Comparison between T-shaped deep mixing method and traditional deep mixing method for soft ground improvement

The shortcomings of the traditional soil-cement mixing method in China are reviewed.A new technique,T-shaped deep mixing method,is introduced.In a highway construction section located in Jiangsu Province,field pilot tests were conducted to compare the performance of the proposed method and the traditional method.The field tests include loading test,SPT test and unconfined compression test,deformation,and load transfer characteristics.The results show that the proposed method has better performance as well as better cost-effectiveness than those of the traditional deep mixing method.It is concluded that the proposed method can be widely used in engineering practice.