Method of applying a mortar material to a surface

摘要: Simulated stone products are prepared by spraying a mortar material, in blast of compressed air, into mould means gun 10, 14, 16, to which the material is fed via lateral inlet 12 peristaltic pump. Com­pressed air supplied an axially extending pipe 18 within body 10 gun, terminating, just short nozzle 16 from spray ejected. The effectively "atomised" spray, so that individual aggregate particles, such as sand grains, coated with cement, hurled at high speed, against surface or previously deposited particle form densely packed layer which, curing, de-moulding and etching abrasion, closely simulates appearance natural stone. apparatus method disclosed allow, inter alia , relatively thin light, yet strong, be produced economically.