BENTOFIX

Fig. 1

Fig. 1 shows the common usage of a GCL within a final cover for composite caps or covers in landfills or for mining applications. In this application, the flux rate of fluid leakage through the GCL is influenced by the head of fluid acting on the GCL and the presence of an overlying geomembrane. Typically the head is limited to less than 30 cm. The stability of the GCL is influenced by the slope angle , the normal load gradients, and the interface friction angle , with adjacent layers. Additionally the performance of the GCL is influenced by the elongation performance of the GCL during differential settlement. Freeze/thaw effects as well as dry/wet effects in this application are usually not of a concern due to the overlaying geomembrane.

Bentofix® GCLs with one woven and nonwoven component are best suited for this application in designs up to approx. 18°, with a nonwoven on both sides typically steeper designs than with woven components, due to an increase of the interface friction angle are possible. Additionally Bentofix® with a nonwoven on both sides has a higher elongation capacity which is beneficial in applications with expected differential settlement.




			Landfill and Mining Caps Composite Cap or Cover Fig. 1 Fig. 1 shows the common usage of a GCL within a final cover for composite caps or covers in landfills or for mining applications. In this application, the flux rate of fluid leakage through the GCL is influenced by the head of fluid acting on the GCL and the presence of an overlying geomembrane. Typically the head is limited to less than 30 cm. The stability of the GCL is influenced by the slope angle , the normal load gradients, and the interface friction angle , with adjacent layers. Additionally the performance of the GCL is influenced by the elongation performance of the GCL during differential settlement. Freeze/thaw effects as well as dry/wet effects in this application are usually not of a concern due to the overlaying geomembrane. Bentofix® GCLs with one woven and nonwoven component are best suited for this application in designs up to approx. 18°, with a nonwoven on both sides typically steeper designs than with woven components, due to an increase of the interface friction angle are possible. Additionally Bentofix® with a nonwoven on both sides has a higher elongation capacity which is beneficial in applications with expected differential settlement.

			The information and data contained herein are, to the best of our knowledge, true and accurate. All suggestions and recommendations are offered without guarantee. Final determination of suitability for use based on any information provided is the sole responsibility of the user. There is no implied warranty of merchantability or fitness of the product for the contemplated use. Bentofix® is a registered trademark of NAUE GmbH & Co. KG GmbH (status 11/01)