“Fluobizol”. It is a grayish cloudy liquid. He's pissing him (shake before use) for cement mortar, prepared with sand in proportion 1:1, 1:2, 1:3 and grinds to a thick mass, which in turn is formed into lumps or "plugs."” to secure water-endangered points. Addition of "Fluobizol” to the mortar causes it to set very quickly (the beginning of the bond after 30 sec, end after 15-20 minutes.). Therefore, all robots using "Fluobizol” should be done very quickly. “Fluobizol” used in cases of sudden ingress of water (even under pressure), when working underground, in tunnels, shafts etc..