Pneumatically Placed Concrete and Refractory Materials

The pneumatic placement process and its advantages of speed, flexibility and economy are reviewed. Various applications of the process to aerospace support are discussed. Details are given in regard to 1) "hard" refractories applied to launch pads and heat shields, 2) insulating refractory coatings which serve as protection for structural steel and other susceptible components, and 3) special refractory linings for containment of radioactive materials. The pneumatic placement process is described as being complex, involving many variables.