BS 6906-8 Geotextile Part 8: Determination of Sand-Geotextile Friction Behavior by Direct Shear

Product Safety Tests

BS 6906-8 Geotextile Part 8: Determination of Sand-Geotextile Friction Behavior by Direct Shear

EUROLAB laboratory provides testing and compliance service within the scope of BS 6906-8 standard. This section of BS 6906 describes methods for determining the friction or shear resistance of a geotextile to sand. The test is valid for all geotextiles that will transmit the load from the geotextile to the soil.

BS 6906-8 Geotextile Part 8: Determination of Sand-Geotextile Friction Behavior by Direct Shear

The coefficient of friction between a geotextile and sand, or any combination of geotextile chosen by the user, is determined by placing the geotextile and sand directly on the contact surface within a shear box.

A constant normal compressive stress is applied to the sample and a tangential (shear) force is applied to the apparatus so that a portion of the box moves relative to the object. The shear force is recorded as a function of the displacement of the moving part of the shear box.

The test is performed at at least three different normal voltages. The resulting peak and residual shear stresses are plotted against the corresponding normal stress values.

The slope of the optimal straight line passing through the points of highest shear stress defines the highest coefficient of friction. Similarly, the slope of the optimal straight line through the residual shear stress points defines the residual friction coefficient.

EUROLAB assists manufacturers with BS 6906-8 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.

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