Test Method Title
Standard Test Method for Determining Apparent Opening Size of a Geotextile
Reference Number
ASTM D4751
Material
Geotextile
Test Property
Apparent Opening Size (AOS)
Description of Test
A geotextile specimen is placed in a sieve frame, and sized glass beads are placed on the geotextile surface. The geotextile and frame are shaken laterally so that the jarring motion will induce the beads to pass through the test specimen. The procedure is repeated on the same specimen with various size glass beads until its apparent opening size has been determined.
Number of Test Specimens
5
Test Specimen Size
10" diameter (effective 8" diameter)
Keywords
AOS, apparent opening size, O95