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SpecChem RepCon H-350

SpecChem RepCon H-350

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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. This product leverages advanced polymer technology to enhance durability, performance, and ease of application.

  • One-component, easy-to-mix and apply
  • Fiber-reinforced for enhanced strength
  • Offers excellent freeze-thaw durability due to dry-polymer technology with an integral corrosion inhibitor
  • Suitable for a variety of horizontal concrete repairs and form & pour applications
  • Foot traffic ready within 4-6 hours
  • Natural concrete-gray color
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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.

Coverage

Coverage: Approximately 20 sq-ft at 1/4” thickness

Test Data

  • Set Times at 70°F (ASTM C-266):Initial Set: 60 min, Final Set: 90 min
  • Compressive Strength (ASTM C-109):1 day: 2450 psi7 days: 6050 psi28 days: 9000 psi
  • Bond Strength (7 days, ASTM C-882 modified):1600 psi
  • Flexural Strength (ASTM C-348):7 days: 650 psi28 days: 1200 psi

Standards

Complies with ASTM C-928 for rapid-hardening mortars