다접범 클램프를 이용한 지오그리드의 접점강도 평가

It was proposed that the wide-width geogrid junction strength test method. Geogrid specimens of multi ribs to be increased the number of ribs to 20㎝ width by stages were prepared and tested at the same condition of GRI GG-2. The result strengths are plotted to rib number of specimen and the regression line acquires. The ultimate geogrid junction strength per unit width is determined and compared with the J grid from the proposed equation. Finally, it is seen that the geogrid junction strength per unit width by this modified wide-width junction test is smaller than the computed value by the GRI GG-2 and to use this modified method for determination the geogrid junction strength should be more reasonable than single junction test.