Supagreen Pty Ltd.
To continue product testing of GeoSpray for concentrated flow performance, we developed a way to simulate flow conditions in an earthen drain constructed in a dispersive, sodic, non-saline clay subsoil. Testing was conducted at LandLoch laboratories in Toowoomba, Queensland.
GeoSpray successfully increased the critical shear stress for initiation of scour (and therefore the maximum permissible flow velocity) relative to the control surfaces studied.
In general, applying the product to bare soil increased the surface strength to a point that – at a maximum flow rate (21.5 L/s 1,290 litres per minute) – no erosion of the underlying soil occurred.