Fabric-formed revetments

Fabric formed revetments (FFR) can be used as an alternative to rock rip-rap structures, as shown in Fig. 8.43. They are constructed by pumping a very fluid fine-aggregate grout (i.e. cast-in-place concrete) into a woven fabric envelope consisting of two layers connected by tie-chords or by interweaving. FFRs can be engineered to perform as impermeable or permeable wave barriers. 

Including fabric-formed revetments, geocellular coniineiiieiit systems, gabicms, and articulating conCTete blocks. 

Erosion control fabrics n. Fabrics used in the stabilization of embankments and the containment of silt run-off from erodible slopes. In embankment stabilization, the fabric functions as a filter medium behind stabilizing rip-rap revetments. In siltation control, the fabric acts as a filter to contain silt while allowing excess water to drain freely. In turf reinforcement, the mat is used to retain soil while allowing roots and stems to grow through. In fabric-forming systems for the construction of revetments, a double-layer, water-permeable fabric is positioned, then pumped full of structural grout. These systems are alternatives to rip-rap. 

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