"The ARMORFORM® erosion control system utilizes double-layer woven geotextiles engineered exclusively to serve as forms for casting concrete erosion control revetments and linings. The forms are woven from nylon and/or polyester yarns and are designed with the required mechanical and hydraulic properties of a superior textile form....ARMORFORM is positioned on the subgrade to be protected, where it is inflated with pumpable fine aggregate concrete (structural grout) to form an erosion control mat...ARMORFORM mats can be produced to inflate to more than 24 inches thick or even to allow revegetation of an eroded embankment." - ARMORFORM, Inc.
In the summer of 2003, we were in the process of upgrading an overflow spillway at Sidney Coal Company's coal refuse slurry impoundment facility in Pike County, Kentucky. The new spillway would need to be constructed directly over coarse coal refuse and provide a safe means of transporting large volumes of water. This process was done twice in the same spot but at different elevations over the course of 3 months. It worked very well and both MSHA and Sidney Coal Company were very pleased.
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