The micro-structure study on mechanical properties of Dredge fills

Yun Ma, Hua Si

COMPUTER MODELLING & NEW TECHNOLOGIES 2015 19(1B) 66-71

Xinxiang University, Henan, China

Mechanical tests and electron microscopy scanning tests were done and micro-structural parameters were quantitatively analyzed in order to study the essence of structural characteristics of Dredge Fills. After comparing the mechanical test results with the statistical results of microstructure parameters, it can be find that the transition stage of the stress-strain curve of dredge fill compression test is also the mutation stage of the curve of micro-structural parameters, and the same time, the micro-structural parameters of shear test soil samples under different axial strain were not linear variation with the axial strain increases and mutated in 10% to 15% axial strain. The analysis result shows that the structural mechanical properties of the dredge fill are subject to its microstructure, and mutation of mechanical test curve is a macroscopic manifestation of microscopic structure damage. The experimental results indicate that dredge fill has the basic mechanical properties of structural soil.