%0 Journal Article
%A DING Jin-hua
%A TONG Jun
%A LIU Jun
%T Application of a Multifunctional Soil-geosynthetics Testing Machine to Research on Soil-geogrid Interaction
%D 2017
%R 10.11988/ckyyb.20161030
%J Journal of Yangtze River Scientific Research Institute
%P 29-34
%V 34
%N 2
%X The interaction between soil and geosynthetics is an important issue in the research of reinforcement mechanism, and the properties of reinforcement material are key parameters in the design of  reinforced-soil structure. A new multifunctional  soil-geosynthetics testing machine has been developed on the basis of conventional direct-shear test apparatus. The machine consists of two sets of servo motor, automatic control and data acquisition system, and a set of shear box with dimension of 600mm×300mm×300mm, etc. Direct-shear test, pull-out test, confined-tension test and confined-creep test can be conducted on the machine through several auxiliary means and control modes. Furthermore, the sand-confined tensile strength and creep properties of different geogrids were tested and compared. The contribution of geogrid-soil interaction to the strength of soil-geosynthetics  was also analyzed. The tests validated that the machine has good operability and accuracy.
%U http://ckyyb.crsri.cn/EN/10.11988/ckyyb.20161030