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SpecChem RepCon H-350

SpecChem RepCon H-350

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Contractor Overview

RepCon H-350 is a cementitious concrete repair mortar. Single-component polymer-modified concrete repair mortar with corrosion inhibitor RepCon H-350 is a single-component, polymer-modified, fiber-reinforced concrete repair mortar with an integral corrosion inhibitor. It is suited for a variety of screed, trowel-down, or form-and-pour repair applications in industrial, commercial, and infrastructure settings.

Best For

  • Horizontal

Key Features

  • Fiber-reinforced concrete repair mortar with an integral corrosion inhibitor
  • Corrosion inhibitor RepCon H-350 is a single-component, polymer-modified, fiber-reinforced concrete repair mortar with an integral corrosion inhibitor
  • Concrete repair formulation
  • Built for professional patching and restoration work

Material & Application Notes

It is suited for a variety of screed, trowel-down, or form-and-pour repair applications in industrial, commercial, and infrastructure settings. This product leverages advanced polymer technology to enhance durability, performance, and ease of application.

Why Contractors Choose It

Contractors choose RepCon H-350 when the repair needs to hold up, finish cleanly, and fit the job condition without slowing down the crew.

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Application

Surface Preparation

Ensure the concrete is sound and clear of any foreign materials such as oil, grease, dust, and laitance. For optimal durability, saw-cut the repair perimeter 1/8” deeper than the repair depth to create a notched, reinforced edge. Mechanically abrade the surface to a minimum CSP 5, as per ICRI 310.2 guidelines. All surfaces must be saturated-surface-damp (SSD) with no standing water.

Priming/Scrub Coat

Remove rust from exposed steel reinforcing and coat with SpecPrep SB. The prepared concrete must be SSD and primed with a spray or brush coat of SpecPrep SB, applied wet-on-wet or within the recommended open time. Alternatively, scrub a thin layer of the mixed mortar into the pre-dampened substrate with a stiff brush and apply the mortar before the bond coat dries.

Mixing

Mix 4.5 to 5.0 pints of clean water per 50-pound bag, depending on desired consistency. Use a low-speed drill for mixing, adding the water first, followed by the RepCon H-350 powder. Mix for 2-3 minutes and use within the setting period. RepCon H-350 is suitable for applications ranging from 1/4” to 2” per lift.

Placement

Trowel or screed RepCon H-350 firmly into the prepared area, ensuring intimate contact with the bonding surface. Allow it to reach initial set, then finish with hand troweling.

Deep Applications

For repairs exceeding 2”, extend RepCon H-350 with clean, SSD, 3/8” aggregate up to 50% by weight. Mix an additional 2 minutes and place within 15-20 minutes.

Packaging

50 lb bag

Shelf Life

12 months when stored properly in a cool, dry area away from direct sunlight.

Standards

Complies with ASTM C-928 for rapid-hardening mortars