Scour – An underwater problem
Asphalt – An underwater solution
Scour or underwater erosion is caused by natural currents or ships’ propellers. Asphalt – readily worked in water – is well suited to the submerged installations frequently required for scour protection.
Mastic is an ideal product to place underwater:
- The dense material flows easily in water.
- In spite of rapid skin formation, the flow’s centre remains hot so the mastic continues to penetrate – much like larva flowing under a volcanic crust.
- Joints form readily – when cold mastic is hit by hot the bitumen-rich material soon warms up and the materials fuse together.
- Especially useful when combined with rock
For Scour Protection to Port Berths please see PORTS & HARBOURS page
Coastal and river revetments are sometimes prone to toe scour. A slab of mastic or stone/mastic placed in front of the structure is an effective solution. The material resists scour, and, with its thermo-plastic properties, follows changes in foreshore level – slabs have been known to bend up to 90° without failing.
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