Preloader

A PVC backing on one surface provides a waterproof capability and the internal fibre matrix prevents crack propagation and provides tensile reinforcement once set. This allows GCCMs to provide a range of benefits over conventional concrete including speed of installation and logistical advantages. For example, when replacing sprayed concrete, these materials remove much of the complexity and cost associated with mobilising shotcrete equipment.

When replacing poured concrete, they remove the need for on-site mixing and measuring and factory quality control ensures that the concrete used on-site meets the required design specification.

GCCMs are most commonly used as erosion control linings for water channels, either for drainage or irrigation and as facings for slopes as a replacement for non-structural concrete. On slope facing, they are far easier to construct than conventional concrete and can be supplied in man-portable rolls allowing them to be used in remote or difficult-to-access sites. Japan, for example, is one of the largest markets for GCCMs where it is predominantly used for slope facing in sites with poor access. The high early-strength concrete mix also enables GCCMs to have excellent abrasion resistance (approximately twice that of OPCs), UV resistance and chemical performance with a typical design life of well over 50 years.