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SpecChem SpecPlug

SpecChem SpecPlug

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Contractor Overview

SpecPlug is a fast-setting hydraulic cement / plugging compound. 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.

Best For

  • Masonry
  • Vertical

Key Features

  • Concrete repair formulation
  • Built for professional patching and restoration work

Material & Application Notes

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. Single-component, easy to use by just adding water. Expands to form a strong, watertight bond to the substrate.

Why Contractors Choose It

Contractors choose SpecPlug when the repair needs to hold up, finish cleanly, and fit the job condition without slowing down the crew.

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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