What diameter should the longitudinal apertures of the geogrid not exceed?

The correct answer regarding the maximum diameter of the longitudinal apertures of the geogrid being 40 mm is based on the requirements for effective reinforcement in asphalt applications. Keeping the diameter of the apertures within this limit ensures that the geogrid can provide adequate support and stabilization to the asphalt layer while maintaining the structural integrity of the pavement.

If the apertures are too large, it may compromise the interaction between the geogrid and the surrounding material, leading to reduced load distribution and an increased risk of failure in the pavement system. Therefore, a maximum aperture diameter of 40 mm is specified to balance the need for reinforcement with the functional aspects of the asphalt layer, ensuring durability and performance in various environmental conditions and loading scenarios.

This diameter is critical for achieving the desired performance characteristics, while also preventing issues associated with excessively large openings, which might lead to premature degradation or inadequate performance of the pavement structure.