SUDS - Structural Improvement of Porous Pavements

Improving the stability of porous pavements In a Sustainable Urban Drainage System, a porous pavement can play a crucial role. There are many different products and systems for these permeable roads and parking areas, but the most commonly employed surfacing materials are open jointed concrete paver blocks or open structure plastic pavers. Within these systems there is normally a granular base layer which has the combined role of providing foundation stability and also a large water storage volume. This storage volume is achieved by using an open graded granular fill which is less stable than normal pavement quality well graded granular base or sub-base material.

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SUDS - Structural Improvement of Porous Pavements

How Tensar can help

Tensar’s innovative TriAx geogrids, can provide an ideal solution in such systems, as they will mechanically stabilise the granular base and compensate for the lower stability caused by the open grading. This is particularly important over weak or variable subgrade soils. This can allow the necessary water storage capacity to be achieved without compromising on stability and load carrying capacity.

Improving the stability of porous pavements

Extend pavement life and reduce maintenance: TriAx geogrids give road and parking areas improved bearing capacity, strengthening the structure and reducing differential settlement

The benefits

Extend pavement life and reduce maintenance: TriAx geogrids give road and parking areas improved bearing capacity, strengthening the structure and reducing differential settlement

Increased load bearing capacity: by interlocking with and confining the open graded aggregate of the base layer, geogrids can reduce the deformation of the granular material under wheel loadings and help maintain the stability of the pavement – essential for roadways and heavy duty pavements.

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SUDS - Structural Improvement of Porous Pavements