METHOD AND APPARATUS FOR MIXING, SPRAYING AND PLACING CEMENTITIOUS MATERIAL

摘要

Provided is a composition for a rapid setting sprayable cement material as well as the process and system for mixing and placing said cement material. The composition comprises a sprayable mixture of cement forming ingredients such as silicon dioxide, magnesium oxide, and an aqueous metal phosphate solution. The process for mixing and placing said cement material uses serially connected dry material feed receptacles (R1) and (R2) which are independently pressurizable and are isolatable from ambient conditions after loading to provide substantially increased throughput volume. The receptacles communicate the composition to a fluidizing element (C1) in which the material is fluidized before being formed into a slurry and atomized via spray nozzle (45).