ASTM D4751 Standard Test Method for Determining the Apparent Span Size of a Geotextile

EUROLAB laboratory provides testing and compliance services within the scope of ASTM D4751 standard. The ASTM D4751 standard is used to determine the apparent aperture size (AOS) of a geotextile by screening glass beads from a geotextile.

AOS (Visible Opening Size) is a simple test. During testing, spherical, solid glass beads are dry sieved with a geotextile for a specified period of time and at a specified vibration frequency. The number of beads retained by the geotextile sample is then measured. The test is performed on glass beads of various sizes.

AOS (Apparent Aperture Size) is a simple test. During shaker.jpg The visible aperture size is the pore size, measured in millimeters, at which 90% of the glass beads are retained on and within the fabric.

This test method displays values ​​in both SI units and inch-pound units. "SI" units are the technically correct name for the system of metric units known as the International System of Units. "Pound-inches" units are the technically correct name for the conventional units used in the United States. Values ​​in inch-pound units are for informational purposes only.

This standard does not purport to address all, if any, safety concerns associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory restrictions prior to use.

Our organization, EUROLAB, provides standard test method services to determine the apparent aperture size of a geotextile, within the framework of national and international standards, with its trained and expert staff and advanced technological equipment, among numerous test, measurement, analysis and evaluation studies. Contact EUROLAB to get testing service under ASTM D4751 standard.