Cast Premix GRC
Package Includes:
Machinery
- WAAPS 3000 – Water, Polymer and Admixture dispensing system
- GRC125 Combination Slurry/Premix GRC mixer (with bucket trolley)
- Large Vibrating Table 2.2 x 1.2 x 0.5m
- MK3 Powertex Facing Coat Spray Gun (+ airline)
Accessories
- GRC thickness measuring gauge
- Slump test kit
- ‘Wash-Out’ test baskets (x3)
What is Cast Premix?
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
A flexible option, enabling manufacturers to produce both Traditional Hand Spray and Cast Premix GRC
Versatile, efficient, and the most popular production method chosen by new start-ups
