Road construction applications utilize geotextiles in three primary functions: separation, reinforcement, and filtration. As a separator, geotextile placed between the subgrade and aggregate base prevents intermixing of materials, maintaining the designed thickness and load-bearing capacity of the base course. This function is essential for preventing premature failure due to subgrade pumping and aggregate contamination.
For reinforcement applications, high-strength woven geotextile distributes loads over soft subgrades, reducing rutting and extending pavement life. By providing tensile reinforcement at the base of the road structure, geotextile allows construction on marginal soils that would otherwise require extensive excavation and replacement. This capability generates significant cost savings while improving long-term performance.
In pavement repair and asphalt overlay applications, nonwoven geotextile saturated with asphalt acts as a stress-relieving interlayer, absorbing tensile strains and preventing reflective cracking from propagating through new pavement surfaces. This extends overlay life by 3-5 years and reduces maintenance frequency for highways and urban roads . At www.hzgeotextile.com, our road construction geotextiles are engineered to meet AASHTO M288 and EN 13249 standards, ensuring reliable performance under heavy traffic loads.
