Navigating geotextile specifications requires familiarity with standardized testing methods. Tensile strength, measured by tests such as ASTM D4632 or EN ISO 10319, indicates the force required to break the fabric and is critical for reinforcement applications. Woven geotextiles typically exhibit high tensile strength with low elongation, making them suitable for soil stabilization and foundation reinforcement.
Apparent Opening Size (AOS), determined by ASTM D4751, characterizes the filtration properties of the fabric by measuring the size of its pores. For filtration applications, the AOS must be small enough to prevent soil migration (piping) while allowing water to pass freely. This balances with permeability, which quantifies the water flow rate through the geotextile. Nonwoven geotextiles generally offer higher flow rates, making them preferred for drainage applications .
Puncture resistance, evaluated through tests like ASTM D4833 (CBR puncture), simulates the force of sharp objects being pushed into the fabric. High puncture resistance is essential for applications such as landfill liner protection or when placing angular aggregate directly onto the geotextile. Compliance with standards like AASHTO M288 in North America or EN 13249 in Europe provides assurance that the geotextile meets minimum performance requirements for specific applications .
At www.hzgeotextile.com, all our products are tested to these international standards, and we provide comprehensive data sheets for your verification.
