Effect of core permeability on armour layer stability

 

The permeability of a breakwater core affects the stability of the breakwater armour. No design guidelines are available to account for the effect of a geotextile container core on armour stability. This paper discusses the present knowledge on the effect of core permeability on armour layer stability, both for rock and concrete armour units. Results are presented from project specific model tests on Xbloc armoured breakwaters with geotextile container cores. A prototype case is presented where damage has occurred, which may be attributed to low core permeability. Recommendations are given for the design of breakwaters and seawalls with low permeability cores.

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effect-of-core-permeability-on-armour-layer-stability-reedijk-et-al.pdf