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Use of Articulating Concrete Block Revetment Systems for Stream Restoration and Stabilization Projects

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  Paper number  032034,  2003 ASAE Annual Meeting . (doi: 10.13031/2013.13758) @2003
Authors:   D. Wade Anderson
Keywords:   Articulated Concrete Block Systems, Channel Stabilization, Erosion Control, Stream Restoration, Revetment, Grade Control, Slope Protection, Scour

A variety of natural and man-made materials may provide erosion protection in stream restoration and stabilization projects. One of these products is an articulating concrete block (ACB) revetment system. An ACB Revetment System is a matrix of interconnected concrete block units installed to provide an erosion resistant revetment with specific hydraulic characteristics. The individual units are connected by geometric interlock, cables, ropes, geotextiles, geogrids, or a combination thereof, and typically overlay a geotextile for subsoil retention. An ACB revetment system may be used to provide permanent erosion protection where vegetation and other soil bioengineering practices are not stable for the design event. Typical applications of the ACB revetment system may include entire channel cross section protection, toe and lower side slope protection, grade stabilization structures, and other high energy environments.

This paper will describe the ACBs currently available and some of the benefits of their use. The system consists of concrete blocks, a filter (typically a geotextile), and in some products, cables. Each of these materials will be discussed. A summary of the testing for hydraulic performance will be presented along with design procedure for open channel flow. Critical installation features including subgrade preparation, ancillary components (such as drainage layers), filter placement, ACB placement, system termination, and anchors and penetrations will be discussed for typical installations.