Determination of the characteristic opening size (wet sieving)

Test Method Title:
Determination of the characteristic opening size (wet sieving)

Method ID:
BS EN ISO-12956:2010

Material:
Geotextile and Geotextile related products

Test Property:
Apparent Opening size O90

Description of Test:
A test specimen is clamped in a Sieve shaker machine and shakes the specimen for 10 minutes with water spray and required amount of glass beads. Dry the testing specimens with glass beads after complete wet sieving. Than collect the passing glass beads and calculate the result O90 after particle distribution. Apparent opening size O90 is calculated.

Preferred Test Sample Size:
2m x Full production width.

Number of Test Specimens:
5 pcs

Test Specimen Size:
250mm x 250mm or 200mm diameter as per requirement of laboratory apparatus.

Keywords:
Apparent Opening size.O90