In hydraulic projects—especially in the construction and rehabilitation of canals—waterproofing plays a fundamental role in preventing water loss, erosion, and structural damage. One of the most efficient and durable solutions in this field is the COLETANCHE bituminous geomembrane, widely used for its high performance under demanding conditions.
COLETANCHE is a prefabricated bituminous geomembrane made from a blend of modified bitumen and high-strength geotextile reinforcements. This material combines the flexibility of bitumen with the mechanical stability of reinforcements, providing a robust and reliable waterproof barrier.
Unlike other synthetic geomembranes, COLETANCHE offers excellent adhesion to the substrate, significantly reducing the risk of leakage.
The main function of COLETANCHE is to prevent water infiltration. Its continuous structure and weldability ensure a completely watertight barrier, ideal for irrigation, conveyance, and drainage canals.
This material is highly resistant to:
This makes it suitable for canals with constant flow or sediment presence.
Thanks to its flexibility, COLETANCHE easily adapts to ground irregularities, even in soils with differential settlement.
It has a long service life, even under exposure to UV radiation, thermal cycles, and chemical agents present in water or soil.
Installation can be carried out using thermal welding or bitumen bonding techniques, enabling faster construction and reduced operational costs.
A bituminous geomembrane is ideal for different types of canals:
It can be used in both new projects and the repair of deteriorated infrastructure.
The typical process includes:
Proper installation is key to ensuring system performance.
Comparison with other geomembranes
Compared to polyethylene geomembranes (HDPE or PVC), COLETANCHE offers:
However, each material should be evaluated based on the specific conditions of the project.
The COLETANCHE bituminous geomembrane represents a reliable, durable, and efficient solution for canal waterproofing. Its combination of strength, flexibility, and ease of installation makes it a standout choice for engineers and hydraulic infrastructure developers.
Investing in a high-quality waterproofing system not only improves hydraulic performance but also reduces maintenance costs and water losses over the long term.
The service life of COLETANCHE can exceed 30 years, depending on installation conditions, environmental exposure, and maintenance. Its resistance to UV rays and chemical agents contributes to its longevity.
Yes, COLETANCHE is highly adaptable to different soil types, including irregular terrain. However, proper ground preparation is recommended to maximize performance.
Maintenance is minimal. However, periodic inspections are recommended to detect possible mechanical damage or sediment buildup that could affect the system.
Yes, the bituminous geomembrane has good resistance to various chemical agents, making it suitable for agricultural, industrial, and mining applications.
Although the initial investment may be similar or slightly higher than other geomembranes, its durability and low maintenance result in significant long-term savings.
Yes, COLETANCHE is an excellent option for rehabilitating existing canals, especially those with leakage issues or structural deterioration.