Challenge: A mining operation in a region with soft, clay-rich soil needed to build a 3-kilometer access road for heavy haul trucks (over 100-ton payloads). Traditional methods using several feet of aggregate were proving excessively costly, time-consuming, and environmentally disruptive due to the massive volume of imported material required. The soft subgrade threatened to swallow the aggregate base, leading to rutting and constant maintenance.
Solution: The engineering team specified a high strength geotextile with exceptional tensile strength and modulus for reinforcement. A woven geotextile fabric was chosen for its ability to distribute loads over a wider area. The design involved excavating less unsuitable material, placing the geotextile for road construction directly on the compacted subgrade, and then adding a significantly reduced thickness of high-quality aggregate.
Implementation: Rolls of the heavy duty geotextile fabric were deployed on-site. Following strict installation protocols with proper overlaps, the fabric created a stable "mattress" effect. It separated the weak subsoil from the stone base and, crucially, provided tensile resistance to the horizontal forces caused by the heavy traffic, effectively bridging over localized soft spots.
Results: The reinforced section showed immediate improvement. Rutting was eliminated, and the road maintained a stable, even surface. The project achieved a 30% reduction in aggregate use, leading to substantial cost savings and a smaller environmental footprint. The geotextile for temporary road became a permanent, high-performance solution, drastically reducing maintenance downtime for the mining company.
This case study exemplifies the transformative power of geotextile reinforcement. For your next challenging soil stabilization project, consider the engineered solution. Contact HZGeotextile to discuss how our high strength geotextile products can be tailored to your most demanding applications.
