Tunnel Waterproofing

Barklay Polymers presents its advanced Tunnel Waterproofing System, designed to provide comprehensive protection against water ingress in tunnels and underground structures. This system ensures the longevity and structural integrity of tunnels, safeguarding them from water damage, chemical infiltration, and environmental stresses.

Tunnel with PVC Membrane

Barklay Polymers offers a cutting-edge repairable waterproofing solution tailored for NATM tunnels equipped with PVC membrane technology.

Product Features:

  1. Comprehensive Waterproofing: Provides a robust barrier against water ingress, ensuring tunnels remain dry and structurally sound.
  2. Chemical Resistance: High resistance to a wide range of chemicals, including salts, acids, and alkalis, protecting against chemical attack.
  3. Flexibility and Adhesion: Superior flexibility accommodates substrate movements and excellent adhesion ensures the system bonds well with various tunnel surfaces.
  4. Durability: Exceptional resistance to abrasion, impacts, and harsh environmental conditions, ensuring long-lasting performance.
  5. UV Stability: UV-resistant components protect exposed areas from degradation due to sunlight.
  6. Low VOC Content: Environmentally friendly formulation with low volatile organic compounds (VOC), ensuring compliance with environmental regulations.
  7. Ease of Application: Designed for efficient application with minimal downtime, suitable for new constructions and refurbishment projects.

Barklay Polymers offers a cutting-edge repairable waterproofing solution tailored for NATM tunnels equipped with PVC membrane technology.

System Components:

  1. Primer:
    • Function: Enhances adhesion of the waterproofing membrane to the tunnel substrate.
    • Application: Applied to clean and prepared surfaces before the waterproofing membrane.
  2. Waterproofing Membrane:
    • Composition: High-performance, flexible polyurea or polyurethane membrane.
    • Application: Applied as a liquid or sheet, forming a seamless, impermeable barrier.
  3. Drainage Layer:
    • Function: Manages water flow and prevents water buildup behind the waterproofing membrane.
    • Composition: High-density polyethylene (HDPE) or similar materials.
  4. Protective Coating:
    • Function: Protects the waterproofing membrane from mechanical damage and chemical exposure.
    • Composition: Durable, chemical-resistant coating applied over the membrane.

Waterproofing Technology Designed Specifically for Tunnel Projects

Technical Specifications:

  • Primer:
    • Composition: Epoxy or polyurethane-based primer.
    • Coverage Rate: 8-10 m²/L per coat.
    • Drying Time: Touch dry in 1-2 hours.

  • Waterproofing Membrane:
    • Composition: Polyurea or polyurethane.
    • Thickness: 2-3 mm.
    • Coverage Rate: 1-1.5 m²/L per coat.
    • Pot Life: 20-30 seconds (for polyurea).
    • Curing Time: Tack-free in 5-15 minutes; full cure in 24 hours.

  • Drainage Layer:
    • Thickness: 5-10 mm.
    • Material: HDPE or similar.

  • Protective Coating:
    • Composition: Chemical-resistant epoxy or polyurethane.
    • Coverage Rate: 8-10 m²/L per coat.
    • Drying Time: Touch dry in 1-2 hours; full cure in 7 days.

Application Guidelines:

  1. Surface Preparation: Clean and prepare the tunnel substrate to ensure it is free from contaminants such as grease, oil, and dust. Mechanical preparation may be required to achieve a suitable profile for adhesion.
  2. Priming: Apply the primer to the prepared surface, ensuring even coverage. Allow the primer to dry as per the specified drying time.
  3. Membrane Application: Apply the waterproofing membrane using a suitable method (spray or hand application). Ensure even coverage and desired thickness. Multiple coats may be applied if necessary.
  4. Drainage Layer Installation: Install the drainage layer over the waterproofing membrane to manage water flow and prevent buildup.
  5. Protective Coating Application: Apply the protective coating over the waterproofing membrane and drainage layer to shield them from mechanical damage and chemical exposure. Allow adequate drying time between coats.

Usage Areas:

  • Transportation Tunnels: Rail and road tunnels requiring robust waterproofing solutions to ensure structural integrity.
  • Utility Tunnels: Utility corridors and service tunnels needing protection against water ingress and chemical exposure.
  • Mining Tunnels: Mining shafts and underground tunnels requiring durable and flexible waterproofing systems.
  • Subway Systems: Metro and subway tunnels where consistent and reliable waterproofing is critical for safety and longevity.

Barklay Polymers - Leading the Way in Waterproofing:

Choose Barklay Polymers Tunnel Waterproofing System for unparalleled protection, durability, and reliability for your tunnel projects. Experience the superior performance and peace of mind with our advanced waterproofing solutions.

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