Experimental and numerical study of the isometric cogged biaxial geogrid (ICB-GGR)‎

Abstract EN

The main factors affecting the soil-geogrid interaction are friction, interlocking of the soil through the apertures and the soil particles size.

In the present study a hypothesis assumption of modifying the conventional Biaxial Geogrid by adding cubic cogsdistributed in a sine wave order on both sides of the geogrid ribs, that could improve the soil-geogrid interaction by generate interlocking mechanism between the ribs and the soil.

“ICB-GGR”is the name of the proposed geogrid as an abbreviation for Isometric Cogged Biaxial Geogrid.

To achieve the main goal of this study, an experimental test program wasimplemented and the conducted results wereused in executing a numerical model of the laboratory testsusing the PLAXIS 2D program.

Results of the experimental tests showed improvement in shear resistance of about 50% when using the ICB-GGR in sand compared to using the Biaxial Geogrid under the same conditions.

Typically, reliable numerical model has been established and achieved compliance with the experimental results by about 88% .