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SpecChem SpecPlug

SpecChem SpecPlug

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Fast-setting hydraulic-cement mortar

SpecPlug is a fast-setting hydraulic cement mortar designed to instantly stop water flow through holes and cracks in concrete and masonry. It expands as it sets without shrinking or oxidizing, ensuring a durable repair.

  • Single-component, easy to use by just adding water.
  • Expands to form a strong, watertight bond to the substrate.
  • Sets in approximately 3-5 minutes, rapidly stopping flowing water.
  • Suitable for both vertical and underwater applications.
  • Certified to NSF/ANSI Standard 61 for safe contact with potable water.
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Application

Recommended Uses:

SpecPlug is suitable for:

  • Basement and masonry cracks
  • Floor and wall joints
  • Manholes and sewer pipes
  • Tunnels and swimming pools
  • Below-grade foundations

Surface Preparation

  • Enlarging Cracks:For best results, enlarge the crack to at least 3/4″ in width and depth, ensuring a square or undercut shape.
  • Cleaning:Remove all grease, wax, oil, contaminants, curing compounds, and any weak, contaminated, or deteriorated concrete from the substrate.
  • Wetting Surface:Saturate the repair area with water. SpecPlug can cure in the presence of running water, making it ideal for active leaks.

Mixing and Application

  • Mixing SpecPlug:Create a putty-like consistency by adding a small amount of clean water to SpecPlug. Aim for a 20%-21% water-to-product ratio by weight.Mix only enough material that can be placed within 2 minutes.
  • Application Procedure:For vertical and moving-water applications, hold the mixed SpecPlug firmly in place until it sets, typically within about 3 minutes.Adjust water temperature to manage the setting time: use hot water and warm material in cold conditions, and cold water in hot conditions.

Curing

Curing:Keep SpecPlug damp for at least 30 minutes to support curing. Optimal strength is achieved through wet curing for up to 2 days.

Packaging

Available in 10 lb pails and 50 lb pails.

Shelf Life

18 months when stored properly in unopened containers in a clean, dry area between 45°F and 90°F.

Test Data

  • Set Time at 70°F (ASTM C266):Initial Set: 40 minutesFinal Set: 70 minutes
  • Compressive Strength (ASTM C109):1 hour: 1850 psi1 day: 3050 psi28 days: 7650 psi
  • Expansion (ASTM C157):28 days: 0.08%
  • Flexural Strength (ASTM C78):28 days: 1200 psi
  • Tensile Strength (ASTM C190):28 days: 800 psi