Solmax presents a free webinar on asperity height vs. asperity concentration with textured geomembranes on Nov. 28, 2017, at 1:00 p.m. EST.
The objective of texturing is to prevent a geomembrane surface from being a critical slip plane that may induce, contribute to or make worse potential sliding of materials. As a slope angle increases, higher interface shear resistance may be required along the geomembrane interface to prevent contact materials from sliding.
Achieving higher interface shear resistance along a geomembrane surface is sometimes associated with increasing the asperity height from texturing, but some studies (e.g., Blond and Elie 2006) have shown that higher asperity heights may not always result in higher interface shear resistance. Asperity height may only matter up to 20 to 25 mils, beyond which no further gains may be achieved in interface shear resistance (Blond and Elie 2006).
So, if asperity height has a limit for increasing interface shear resistance, how else can interface shear resistance be increased with textured geomembranes? Will increasing the concentration of asperity and not the height help?
This webinar will review Blond and Elie’s findings for asperity height vs. interface shear resistance, and evaluate the contribution of asperity concentration to interface shear resistance relative to asperity height.
Registration is first come, first served, and limited spaces are available. If you would like PDH credits, please e-mail us after the webinar.
For more information or to register, visit http://bit.ly/2zZSa43.