以CBR試驗探討3D列印地工格網於軟弱土壤之加勁效果

In this study, a geogrid-reinforced soft subgrade system's benefits are studied through a series of CBR tests. In this study, kaolinite was prepared as the weak subgrade clayey material. One-size artificial triangular prism grinding stone was employed as the aggregate base layer material. The reinforcing benefits were discussed with different scenarios, including the aggregate base layer thickness, the geogrid aperture shape, and the production method (commercial product made of PET and 3D-printed materials). The analysis results showed that the geogrid reinforcement could enhance the soft subgrade's mechanical performances, especially for triangular aperture geogrid. Finally, the research results also show that 3D-printed geogrid also exhibits a similar enhancing effect as the PET geogrid; therefore, different geometric types of geogrids may be customized in subsequent studies to explore the reinforcement effect with various test configurations.