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Pasco Aquastop

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Standard $69.70
Bulk $62.73
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Aquastop is a flexible, hydrophilic polymer rubber waterstop designed for sealing construction joints and precast panels. It expands up to 300% upon contact with water, creating a permanent, self-healing seal. Ideal for underground structures, tunnels, and potable water applications, it withstands up to 70m hydrostatic pressure and is easy to install.
Vendor: Pasco
SKU: AQUASTOP19X25/5
Availability: In Stock
$69.70
$69.70
Prices do not include GST
Physical Properties
Hydrostatic Head Resistance >70 meters
Specific Gravity 1.57 (ASTM D71)
Wet/Dry Cycling No effect (25 cycles @70m)
Service Life 40°C to 80°C
Elongation >450%
Colour Black
Adhesion to Clean Dry Concrete Excellent
Penetration Cone 4±5 ASTM D-217
Expansion 100 - 300%
Shipping & Delivery

Flat-rate shipping $17.95 + GST (metro and standard zones). Excludes remote/regional/high-cost postcodes and certain items (DG, oversized, long-length, or bagged products 15 kg+). If your order includes any of these, we will contact you to arrange additional freight charges. Online purchases only.

Pasco Aquastop is a hydrophilic polymer rubber waterstop engineered to seal non-moving construction joints and precast panels in high-pressure underground environments. This sodium bentonite technology utilizes charged microscopic platelets that compact under pressure to withstand a 70m hydrostatic head while providing a self-healing seal that fills cracks and voids.

Potable water certified and resistant to repeated wet-dry cycling, it ensures continuous watertight integrity around complex penetrations and irregular concrete surfaces where traditional rigid waterbars often fail.

Frequently Asked Questions About Aquastop Hydrophilic Construction Joint Waterstop

Q: How does Aquastop work to prevent water infiltration?

A: Aquastop contains sodium bentonite, which expands upon contact with water, creating an impermeable barrier. The expansion fills cracks and voids, forming a self-healing seal that prevents water migration.

Q: Can Aquastop be used in potable water applications?

A: Yes, Aquastop is non-toxic and safe for use in potable water tanks and other drinking water applications.

Q: What is the maximum hydrostatic pressure Aquastop can withstand?

A: Aquastop can withstand hydrostatic pressure up to 70 meters, making it suitable for high-pressure environments like underground structures and tunnels.

Q: How do I install Aquastop around pipe penetrations?

A: Install Aquastop around the outer diameter of the pipe or sleeve. For sleeved pipes with large gaps, install additional strips. Fill any remaining void with non-shrink cementitious grout.

Q: What surface preparation is required before applying Aquastop?

A: Surfaces must be structurally sound and free of dirt, dust, grease, paint, oil, form release, curing agents, and other contaminants. Remove standing water before application.

Use Aquastop Hydrophilic Construction Joint Waterstop for:

  • Sealing construction joints in underground structures.
  • Waterproofing precast panels and box culverts.
  • Creating watertight seals around pipe penetrations.
  • Preventing water infiltration in retaining walls and basements.

Why Use Aquastop Hydrophilic Construction Joint Waterstop:

  • Provides a permanent, self-healing seal.
  • Expands up to 300% for reliable waterproofing.
  • Easy to install and suitable for irregular surfaces.
  • Safe for potable water applications.
  • Withstands high hydrostatic pressure.

How to apply Aquastop Hydrophilic Construction Joint Waterstop:

  1. Prepare the surface: Ensure surfaces are clean and free of contaminants.
  2. Apply adhesive: Brush Aquastop adhesive along the concrete surface.
  3. Install Aquastop: Remove release paper and press Aquastop firmly to the surface.
  4. Butt join ends: Tightly butt join ends to form a continuous waterstop.
  5. Secure: Use mechanical fasteners if needed, especially on vertical sections.

Aquastop Hydrophilic Construction Joint Waterstop limitations:

  • Standard Aquastop is not suitable for contaminated groundwater (saltwater or organic).
  • Requires a minimum 75mm concrete cover.
  • Do not pre-hydrate or submerge in water before installation.
  • Not designed for expansion joints.

Safety precautions when using Aquastop Hydrophilic Construction Joint Waterstop:

  • Personal Protective Equipment: Gloves are recommended.
  • Ventilation: General ventilation is sufficient.
  • Handling: No known hazards during normal use. Refer to the MSDS for more details.

Aquastop Hydrophilic Construction Joint Waterstop can be used on the following substrates:

  • Concrete: Ideal for sealing construction joints and precast panels.
  • Irregular Concrete Surfaces: Conforms to contours, filling cavities and cracks.
  • Penetrations: Seals around pipes and other penetrations through concrete.

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