Toetsing ingegoten bekledingen, bestaande kennis en kennisleemten

In de periode 2001 tot 2003 zijn diverse onderzoeken uitgevoerd naar de stabiliteit van met gietasfalt ingegoten steenzettingen bij ontwerpomstandigheden. Het tot dusver uitgevoerde onderzoek bestond uit drie veldproeven en een aantal bureaustudies. Het uitgevoerde onderzoek heeft het inzicht in het gedrag van een ingegoten bekleding aanzienlijk...

Wave forces and structure response of placed block revetments on inclined structures

A summary of the theoretical and empirical knowledge of the stability of block-revetment structures under wave attack is given. This has been accomplished by selecting the very essence of the design formulas from (CUR/TAW, 1992/1994) and completing it afterwards with a database of results of large-scale model studies from all over the world....

Erosion of sediment through cellular revetment blocks applied as slope protection along coasts and inland waterways

Erosion of banks and dikes subjected to water motion can be prevented, for instance by application of cellular concrete revetment blocks. This type of revetment combined the merits of a closed block revetment and a slope revetment consisting of loose materials. Advantages are high permeability, high stability against wave attack and low block...

Alternative revetments

Summary of design methods for alternative revetments, such as interlock systems and block mats, gabions, concrete mattresses and geosystems, such as sandbags and sand sausages. This contribution aims at giving a summary of the increased knowledge, especially that concerning the design tools that have been made available.

The permeability of closely placed blocks on gravel

The permeability of a layer of closely placed concrete blocks on a sublayer of gravel or sand without a geotextile has been investigated. The results indicate that the permeability of the blocks can be described as a combination of the permeability of the joints and the permeability of the the gravel just below the blocks. The permeability of...

Design criteria for placed block revetments and granular filters

Design criteria for the coverlayer and filter layer of a placed block revetment are presented. These design criteria were derived on the basis of large scale model tests on revetments and test on granular filters. It is shown that the hydraulic loading in the filter can be described with equations of quasi-stationary flow. General filter...