NON-REINFORCING HEXAGONAL GEOGRID FOR THE
STABILIZATION OF UNBOUND GRANULAR LAYERS BY
WAY OF INTERLOCK WITH THE AGGREGATE
This Malaysian Standards describes to paved and/or unpaved roads, railways and hard-standings consist of multiple layers of bound and unbound materials such as concrete, asphalt and granular materials. The granular layers are at rest and experience only the relatively insignificant load from the weight of the layers on top. It is only when construction or in-service traffic passes (vehicles, trains, etc.), that these layers are under transient increased pressure and the associated strain that forms part of the instantaneous response.
During the short period of time associated with the passing of the transient load, granular layers undergo stress with both vertical and horizontal components, where the associated horizontal strains have a radial distribution, (see Figure A1, showing the distribution of the traffic load in all directions of the granular layer). The horizontal components of stress will cause the particles in the layer to move laterally and after the wheel has passed they will not recover completely to the condition before the load was applied. It is this cumulative lateral movement that will cause deformation and will eventually result in a condition beyond service ability of the layers.
The stabilization function addresses this lateral movement and inhibits the accumulation of strain, hence affecting the design life of the granular layer beneficially.
