“Surefoam” is a unique blend of water based foamed surfactants, which produces stable consistent foam with less w/v ratio. It is mainly an anionic blend of proper HLB no, capable of suspending and transporting of drill cuttings out of the tunnel.
In situation with varying geology “Surefoam” along with PHPA/PAC and Pilewell or combination of both can be put into use to make it stiffer.
Simply add 55 kg SF – 110 in 1000 ltr. fresh water to get 40 second marsh viscosity.