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Standard Particles for Determining the Effective Aperture of Geosynthetic Fabrics and Related Products

Standard granular materials used for sieve analysis to determine the equivalent aperture and aperture distribution curve of geosynthetic materials.

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Geosynthetic Testing Equipment

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Standard Particles for Determining the Effective Aperture of Geosynthetic Fabrics and Related Products

Description

Product Introduction:

Standard granular materials used in sieve analysis to determine the equivalent aperture and aperture distribution curve of geosynthetic materials. By measuring the mass of standard granular material passing through each sieve, the percent passing is calculated. Different-sized standard granular materials are then substituted for testing, and a curve plotting standard particle diameter against percent passing is constructed; this curve represents the sample’s aperture distribution, from which the effective aperture O (e.g., Os or Ogs) is determined.

Technical Specifications:

Reference standards: GB/T 14799-2024, GB/T 17634, JTG 3460, SL 235, ISO 12956

National standard and highway standard particle sizes (mm), 10 types	Hydraulic standard particle size (mm), 8 types
0.045~0.063	0.063~0.075
0.063~0.071	0.075~0.090
0.071~0.090	0.090~0.106
0.090~0.125	0.106~0.125
0.125~0.180	0.125~0.150
0.180~0.250	0.150~0.180
0.250~0.280	0.180~0.250
0.280~0.355	0.250~0.355
0.355~0.500	/
0.500~0.710	/

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Standard Particles for Determining the Effective Aperture of Geosynthetic Fabrics and Related Products

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