Properties of GRC
Acoustic performance
Well designed GRC can be effectively used as sound attenuating barriers alongside motorways and railways lines etc. For example a 10mm thick GRC panel will provide 20kg of mass per square meter which when combined with relief patterns and perforations designed to diffract sound the GRC panel will provide excellent sound / acoustic barriers.
Permeability, water absorption and apparent porosity
Well compacted GRC has inherently low water permeability and can be used as for drains, culverts, pits and water tanks.
Fire resistance
The basic constituents of GRC are inorganic and non-combustible. The fire performance classification according to standard test procedure is “A1”.
Toughness and impact resistance
GRC is inherently tougher and more impact resistant than standard concrete and many other fibre reinforced composites.
Recycling of GRC
GRC products are suitable for recycling in a similar way to standard concrete and in fact due to the relative high percentage of cement can contribute to the development of additional strength in concrete made from recycled aggregates.
