Dual-Purpose GRC Production
Package Includes:
Machinery
- WAAPS 3000 – Water, Polymer and Admixture dispensing system
- GRC125 Combination Slurry/Premix GRC mixer (with bucket trolley)
- PS9000i Spray Station – includes machine mounted articulated spray support boom and Concentric Spray Head
- MK3 Powertex Facing Coat Spray Gun (+ airline)
Accessories
- GRC thickness measuring gauge
- Slump test kit
- ‘Wash-Out’ test baskets (x3)
Traditional Hand Spray is a time-tested method. Used for decades in GRC production, it’s the most versatile and popular production technique and the one most often chosen by new start-ups.
Through a specially designed spray gun – such as the Concentric Spray Gun – manufacturers simultaneously spray chopped AR Glass Fibres and cementitious slurry onto a mould, efficiently distributing fibre throughout the mix. This process is followed by hand compaction using a Spring Roller to ensure maximum flexural strength is achieved.
This method is known for achieving the highest strength levels, attributable to its high content of AR Glass Fibre (4-5% by weight), elongated fibre lengths and planar fibre orientation.
Cast Premix is one of the simplest methods of producing GRC, requiring just a mixer and raw materials.
The method involves mixing chopped AR Glass Fibre into a cementitious slurry before being poured directly onto a mould. The key to getting the best results is in the speed of the mixer: running it too fast risks overmixing and adversely affecting the fibre strand integrity, whilst running it too slow risks uneven fibre distribution throughout the mix.
Once prepared, the resulting GRC mix can be poured directly onto moulds and compacted using either vibration or through admixtures included in the mix, such as Flowaid SCC.
The mix is left in the mould and cured for 24 hours underneath polythene to prevent moisture loss. After this period of curing, the product is demoulded and left to remain curing in moist conditions under polythene for a further 7 days.
Cast Premix is a favoured method for the manufacture of standardised products due to the ease of automation it offers. Even when using complex moulds, manufacturers can be assured of consistent results, although with slightly lower mechanical properties.
Other Packages Available...
The most flexible package in our start-up range – produce GRC using Spray Premix, Cast Premix or Traditional Hand Spray methods
The simplest method of manufacturing GRC, made even easier with Power-Sprays’ production technology
Expedite your GRC production operations using our specialist high-output machinery
