Modern infrastructure demands high safety standards, especially in tunnels where fire incidents can lead to severe losses. Tunnel protection is not only about minimizing damage but also ensuring the safety of people and maintaining the structural integrity of the tunnel. Among the various fireproof tunnel systems available, calcium silicate boards have become a reliable solution for achieving long-term fire resistance and durability.
Importance of Tunnel Fire Protection
Tunnels are confined spaces with limited ventilation and escape routes. When a fire breaks out, it can quickly spread heat and smoke, endangering lives and damaging critical infrastructure. A well-designed tunnel protection system plays a vital role in containing the fire, preventing structural collapse, and providing sufficient time for evacuation and firefighting operations.
Tunnel fire protection systems generally include two types of measures:
- Active protection, such as alarms, sprinklers, and ventilation systems.
- Passive protection, which relies on fire-resistant materials like calcium silicate boards that shield the tunnel structure from extreme temperatures.

Tunnel Protection System
Why Use Calcium Silicate Boards in Fireproof Tunnel Systems
A calcium silicate board is an advanced fireproof material made from calcium silicate and reinforcing fibers. It offers excellent thermal insulation, mechanical strength, and durability. When used in tunnel fire protection systems, it helps prevent heat transmission to concrete or steel structures, significantly reducing the risk of collapse.
Key benefits include:
- Excellent Fire Resistance: Capable of withstanding temperatures up to 1200°C, calcium silicate boards effectively protect tunnel linings and structures during high-temperature exposure.
- Non-combustible and stable: Unlike traditional insulation materials, calcium silicate does not emit toxic gases or lose strength when exposed to fire.
- Moisture and impact resistance: These boards maintain performance even in humid or vibration-prone environments common in tunnels.
- Ease of installation: Lightweight and easily cut to size, they can be fitted efficiently across large-scale tunnel projects.
Application in Tunnel Protection Systems
Calcium silicate tunnel boards are widely used in fireproof tunnel systems across transportation, mining, and energy sectors. They are installed as lining panels, duct insulation, and protective barriers in underground tunnels, subways, and road passages. By combining them with active fire control systems, operators can achieve a comprehensive tunnel protection solution that minimizes fire spread and structural damage.
Protectpan: Calcium Silicate Board for Tunnel Protection
New Element offers Protectpan, a professional fire calcium silicate board specifically engineered for tunnel protection systems. Available in multiple thicknesses—9mm, 10mm, 12mm, 15mm, 24mm, and 27.5mm—this low-density tunnel board delivers outstanding fire performance and mechanical reliability.
Calcium Silicate Board For Tunnels
Key Features of New Element Calcium Silicate Board:
High Temperature Resistance Up To 1200°C
Protectpan ensures stable protection under extreme conditions, making it suitable for fireproof tunnel systems, industrial facilities, and high-temperature environments.
Light Weight and Easy Cutting
Its lightweight nature allows for efficient transportation, handling, and installation. On-site customization becomes faster and more cost-effective, ideal for large tunnel projects.
Durable and Mothproof
Designed to resist wear, impact, and pest damage, Protectpan provides long-term durability and stability in challenging underground conditions.
Low Thermal Conductivity
Protectpan’s insulation performance minimizes heat transfer, helping maintain temperature control and enhancing the overall energy efficiency of tunnel systems.
Stable Dimension
Manufactured under precise quality standards, New Element’s calcium silicate boards retain their shape and structural integrity even under temperature fluctuations and humidity.
Overall, Protectpan is a dependable tunnel fire protection material that combines thermal safety, durability, and installation convenience for both domestic and international infrastructure projects.
Calcium Silicate Board For Tunnel Protection System
Conclusion
Implementing an effective tunnel protection system is critical for safeguarding lives and infrastructure against fire risks. Calcium silicate boards offer an ideal balance of fire resistance, thermal insulation, and durability, making them essential components in modern fireproof tunnel systems.
New Element continues to provide advanced solutions like the Protectpan calcium silicate board, helping engineers and contractors build safer, more reliable tunnel protection systems for the future. For more details or to request a custom tunnel fire protection solution, contact us at [email protected].

