Corrugated and flat GRC (glassfibre reinforced concrete) permanent formwork has been extensively used for over 20 years. GRC formwork products can be designed to suit all supporting beam design.
The design and final proportions of GRC permanent formwork takes into account factors such as the detail of the permanent works, the imposing loads from those permanent works and from construction operations, plus self-weight and other environmental factors.
Once this criteria has been decided, the formwork panels can be designed to accommodate any span width up to 1200mm - or wider by incorporating deeper corrugations - and in thickness capable of carrying varying depths of concrete to meet DOT requirements.
GRC formwork combines the well-established compressive properties of cement-based mortars with the valuable flexural and tensile properties contributed by the glass fibre.