What is the maximum longitudinal aperture size allowed for the geogrid?

The maximum longitudinal aperture size allowed for geogrids is critical for ensuring the structural integrity and performance of the asphalt layers they support. A maximum size of 40 mm strikes a balance between allowing sufficient drainage and stability while providing adequate interlocking capabilities with the surrounding materials. This size helps to ensure that the geogrid can effectively distribute loads and maintain the integrity of the asphalt pavement, preventing premature failures or deformations.

Larger apertures could compromise the effectiveness of the geogrid, potentially leading to issues such as reduced load transfer efficiency or increased risk of material migration, whereas smaller apertures might not provide sufficient drainage or flexibility. This careful consideration of the maximum size helps in maximizing the advantages of using geogrids in pavement design and maintenance.