Evaluation of Membrane-Type Materials for Streambank Erosion Protection

摘要

The objective of this study was to investigate new materials and construction techniques for streambank protection by preventing erosion of the banks. The specific materials used were: T15, laminated vinyl-coated nylon; T16, neoprene-coated nylon; Hypalon, synthetic rubber-coated 5x5 and 10x10 polyester scrim membranes; and Bidim C-34 and C-38, spunbonded, continuous polyester filament filter fabrics. Laboratory tests were conducted to determine physical characteristics, such as grab, trapezoidal tear, joint-breaking (as applicable) strength, and elongation of the materials used in the investigation. The primary field test site selected for this study was along the banks of the Big Black River just sought of Vicksburg, Mississippi. However, before the materials could be installed at this site, a permit was required from the Corps of Engineers, Vicksburg District. Therefore, an alternate test site was selected at Durden Creek located on the U. S. Army Engineer Waterways Experiment Station facility. There were two main purposes for selecting the alternate site. One was to verify experimental installation techniques, and the other was to collect limited data on the performance of the materials when used for erosion control purposes in the event the permit to conduct the tests on the Big Black River was denied.