Dry and moist tamping methods are widely used for the investigation of sandy soil liquefaction. However, effect these two tamping-based reconstitution on composite liquefaction behavior have been rarely assessed. In this study, dry were assessed using loose silica sand matrix (HN31) containing various amounts non-plastic silt particles (C500), by performing a series undrained triaxial compressi...

This paper investigates the effect of micropile installation into saturated sandy soil by means of finite element method. The obtained results from numerical modeling are compared with the received data from the site. The validation of software has been done by simulating standard penetration test. The effect of some changes in spacing (3m, 1.6m and 0.8m) and injection pressure (1cm, 2.5cm, 5cm...

In this study, the field measurement was conducted on twin shield tunnelling in a section of Hangzhou Metro Line 6, where surface deformation caused by silty sand obtained. The law and applicability twin-line Peck formula silt area were analyzed. relationship between cutterhead torque identified. Furthermore, differences soft soil discussed. results show that settlement process is faster than h...

To evaluate the sensitivity of high-throughput DNA sequencing for monitoring biowarfare agents in the environment, we analysed soil samples inoculated with different amounts of Bacillus atrophaeus, a surrogate organism for Bacillus anthracis. The soil samples considered were a poorly carbonated soil of the silty sand class, and a highly carbonated soil of the silt class. Control soil samples an...