Standard Test Method for Performance Testing of Articulating Concrete Block (ACB) Revetment Systems for Hydraulic Stability in Open Channel Flow

Importancia y uso:

5.1 An articulating concrete block revetment system is comprised of a matrix of individual concrete blocks placed together to form an erosion-resistant revetment with specific hydraulic performance characteristics. The system includes a filter layer compatible with the subsoil which allows infiltration and exfiltration to occur while providing particle retention. The filter layer may be comprised of a geotextile, properly graded granular media, or both. The concrete blocks within the matrix shall be dense and durable, and the matrix shall be flexible and porous.

5.2 ACB revetment system are used to provide erosion protection to underlying soil materials from the forces of flowing water. The term “articulating,” as used in this standard, implies the ability of individual concrete blocks of the system to conform to changes in subgrade while remaining interconnected by virtue of geometric interlock, cables, ropes, geotextiles, geogrids, or combination thereof.

5.3 The definition of ACB revetment system does not distinguish between interlocking and non-interlocking block geometries, between cable-tied and non-cable-tied systems, between vegetated and non-vegetated systems or between methods of manufacturing or placement. Furthermore, the definition does not restrict or limit the block size, shape, strength, or longevity; however, guidelines and recommendations regarding these factors are incorporated into this standard. Blocks are available in either open-cell or closed-cell configurations.

Subcomité:

D18.25

Referida por:

D7276-16R23

Volúmen:

04.09

Número ICS:

91.100.30 (Concrete and concrete products)

Palabras clave:

articulating concrete block (ACB) revetment system; channel; channel lining; channel stability; erosion; erosion control; open-channel flow; permissible shear stress; permissible velocity; shear stress; velocity;