Concrete liners take the primary form of geosynthetic cementitious composite mats (GCCMs) consist of encapsulating engineered grout between layers of geotextile, so that when saturated, the mat cures to create a shell of fiber-reinforced concrete for erosion control. They have been used widely for new construction and rehabilitation of containment and fluid conveyance infrastructure. The uses have extended to a diverse range of sectors, such as mining, road, rail, civil, petrochemical, and agriculture.
One area where concrete liners or GCCMs differ from traditional concrete is the ease in which they can be installed. Simply grade the subgrade to a smooth aesthetic, lay the GCCM in place, overlap it at the seams, and then wet the product to achieve adequate saturation of the grout. GCCMs can be cut and manipulated in the field to retrofit jobsites with obstructions or abnormal geometry. Due to the fiber reinforcement of the GCCM, the mat itself is flexible by nature, allowing it to move with shifting subgrades before cracking like traditional slope paving might.