the mixing being effected by the action of a fluid (in combination with driven mechanical means, producing cellular concrete B28C5/38)

Full Title

Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions (controlling the mixing apparatus and supplying the ingredients B28C7/00 ) > without using driven mechanical means effecting the mixing (B28C5/48 takes precedence) > the mixing being effected by the action of a fluid (in combination with driven mechanical means, producing cellular concrete B28C5/38)