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Geosynthetics direct shear instrument reference standards which

Geosynthetics direct shear instrument reference standards which

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Geosynthetics Direct shear test The abrasive characteristics of the sand / geotextile interface were measured by direct shear test of the standard sand / geotextile contact surface. Test Specimens: 1. Tile the specimen on a rigid horizontal base located in the lower part of the shear box, with the front end of the specimen, and the test leads: ISO.1, GB / T.1, ASTM / D5321, JTGE50T1129, SL / T235-1999. Clamped in front of the shear zone, the sample and the base between the adhesive with adhesive, after bonding the sample should be flat, without folding and folding, the test sample and the base is not allowed between the relative slip; 2. Install the upper shear box: with the pre-quasi-quality standard sand filled with the upper shear box, the thickness of 50mm, sand thickness should be uniform, after the density of the density of 1750kg / m3; 3. Install the horizontal loader , And apply 50KPa to the sample with a reference weight of 50KPa normal pressure.
ISO.1, GB / T.1, ASTMD5321, JTGE50T1129, BiaozhunJiTuan-2017, SL / T235-1999. hope this helps.

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