2020 Volume 76 Issue 2 Pages 158-173
The surface soil stabilization with laying planer geosynthetics such as geogrids, geotextiles, has been applied to many construction works on soft ground. The authors have newly developed a reinforcement material for this soil stabilization, called “the Lattice-Frame-Reinforced (LFR) sheet”. The LFR sheet combines a geotextile and a lattice frame which is composed of “geojacket” formed by filling a mortar into fabric hose called “jacket”. The lattice-frame of geojacket can reduce the risk of tensile failure of the geotextile sheet due to excessive local load which is a problem of the surface soil stabilization with conventional geosynthetics, since the geojacket can support a certain amount of bending stress. Furthermore, a soil layer reinforced by the LFR sheet can provide larger bearing capacity compared with using conventional geosynthetics, because the lattice frame confines the shear deformation of the inside soil. In this paper, the characteristics and application of surface soil stabilization with the LFR sheet are described.
