Method for mixing, spraying and placing cementitious materials

A continuous process for production of cementitious compositions having controlled densities comprising the steps of simultaneously supplying separate flows of fluids and a blend of dry cement and aggregates to a common junction where the flows are intermixed into a common flow upon coming in contact;

• moving the common flow through static mixers containing a series of angularly disposed baffles causing a turbulence and uniform mixing of the common flow;
• further comprising adding a flow of preformed foam to the common flow of mixed cementitious compositions and conveying the combined flows to a discharge nozzle;
• further comprising injecting said fibers into the common flow after exit from the nozzle and just before placement.