SPRAY UP !
Glass Fiber Reinforced Concrete
Spray up GRC is a process of Spraying a composite of fiber and cement simultaneously onto the mold surface in a single operation. In this way it is possible to build up a matrix that contains above 5% fiber, a fiber ratio not possible by any other method. (Spraying of a Pre-mix, of slurry and fiber through a pumping device and spluttering it onto a surface is not spray up GRC . Spray up GRC has over 5% fiber; the fiber length and orientation are controlled by the spray gun parameters. This requires specific equipment, knowledge and skill as well as a discipline to procedures.
Sprayed GRC composites are actually formed by a spray and roll process. The rolling is done with a special roller that compacts the composite against the mold surface after it is sprayed. The composite is usually built up by spraying and rolling several layers
Note the roller is designed to roll compound surfaces, in decorative GRC very little is flat
A spray teem originally from Stone Accents Manila