Sealing
The main function of "Sealing" is to prevent the flow of water and polluting products into the natural soil.

Protection
The main function of "Protection" is to prevent piercing of a geomembrane.

Drainage
The main function of "Drainage" is to evacuate water or other liquids outside the structure.

Filtration
The main function of "Filtration" is to prevent the internal flow of granular particles which could result in soil destabilization.

Separation
The main function of "Separation" is to prevent two different granular materials from mixing under mechanical stress.

Reinforcement
The main function of "Reinforcement" is to improve the stability of a soil structure.