Apparent opening size

Apparent opening size (permeability) ASTM D4751... [Pg.282]

Types of geosynthetics Tensile strength (kN/m) Extension at max. load (%) Apparent opening size (mm) Water flow rate (volume permeabiltiy) (liters/m /s) Mass per unit area (g/m2)... [Pg.557]

Image analysis Apparent opening size Pores in 2D image Pore size distribution N/A... [Pg.163]

ASTM D4751. Test method for determining apparent opening size of a geotextile. [Pg.202]

ASTM D4751. Standard Test Method for Determining Apparent Opening Size of a Geotextile. ASTM International, USA. [Pg.174]

Apparent opening size ASTM D4751 mm High (class 1) Very high (class l-h) Moderate (class 2) High (class 1) Low (class 3) Moderate (class 2) ... [Pg.245]

Step 6. Check filtration criteria for the geotextile to be used (or the geotextile(s) used in a geocomposite) to meet the following criteria. Important measures include the apparent opening size (AOS), permeability k), and permittivity p) of the geotextile. These values will be compared with a minimum standard or with the soil properties in Eqs. [14.1—14.3] ... [Pg.318]

Drainage and filtration Keeping service condition Farmland Permittivity, apparent opening size (AOS)... [Pg.512]

Maximum average roll value (MaxARV) The value which historically yields a 97.7% confidence level. This value is defined as the average plus 2 standard deviations for a specific test method for a specific type of textile. Typically MaxARV is used to define the apparent opening size (AOS). [Pg.566]

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