Concrete Canvas (CC) has been used worldwide as an effective method of preventing surface erosion and scour associated with water run-off from culverts outlets, spillways and over-toppings.
CC provides an outfall protection solution which is fast, easy and cost effective to install, other key advantages include:
- High Flow Rates: CC8 has been tested by the TRI institute in the US up to flow rates of 8.6m/s. At these speeds the test facility reached its maximum flow velocity and the CC showed no signs of degradation. Anecdotal evidence suggests CC can be used at speeds far in excess of 8.6m/s.
- Low Manning’s Number: CC has been tested by the TRI Institute in the US to ASTM 6460 and shown to have a Manning’s number of n = 0.011.
- Minimal Training: CC can be installed by personnel with minimal training. The material can be cut and fixed with basic hand-tools. CC cannot be over-hydrated and there is no need for mixing, measuring or compacting on site.
- Durable: CC has double the wear resistance of standard OPC and has passed over 200 cycles of freeze-thaw testing giving it a minimum design life of 50 years in a UK climate.
A video showing a typical Outfall project utilising CC can be viewed here.