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SpecChem Por-Rok Concrete Patch

SpecChem Por-Rok Concrete Patch

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Cement Based Vertical and Horizontal Repair Mortar

Por-Rok Concrete Patch is a robust, fiber-reinforced, cement-based repair mortar designed for vertical and overhead applications. It can be applied up to 4 inches thick on vertical surfaces and is ideal for a wide range of concrete repairs. Common uses include bridge columns, parking structures, spandrels, beams, concrete ceilings, tunnels, pipes, pilings, and other similar applications. Por-Rok Concrete Patch is available in a light concrete grey, allowing it to blend seamlessly with existing concrete, and can be sculpted after initial set for a tailored finish.

  • Rapid setting
  • Single component Easy to use
  • Shrinkage compensated
  • Exceptional compressive and flexural strength
  • Light grey in color to match existing concrete
  • Excellent adhesion
  • Strong Bond can be used to improve freeze thaw resistance and bond strength
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Application

Substrate Preparation

  • Surfaces must be solid, clean, and free from loose or damaged concrete, dust, dirt, and other substances that could impair adhesion.
  • Create a roughened surface texture to enhance bonding.
  • Area should be saturated surface dry (SSD) with no standing water.
  • Apply a no slump bond coat of Por-Rok Concrete Patch or a bonding agent like Strong Bond before patching. Ensure bond coat remains wet before application.

Steel Exposure and Rebar

  • Fully expose and clean all reinforcing steel, maintaining a minimum clearance of 3/4 inch.
  • Follow ICRI Technical Guidelines No. 03730 for preparation.
  • Patch edges should be saw cut to a depth of 1/4 inch for optimal results.

Mixing Instructions

  • Standard Mixing:Use 3.75 to 4.25 quarts of clean potable water per 50 lb. bag (approx. 1 part water to 5 parts powder). Mix with a low-speed mortar mixer or 1/2 inch drill with a paddle for at least 90 seconds. Do not re-temper.
  • Enhanced Mix:Use 1 gallon of Strong Bond per 50 lb. bag in place of water, mixing thoroughly as above. Do not re-temper.

Application Method

  • Apply freshly mixed mortar promptly and press firmly into the prepared area for full surface contact.
  • Overfill slightly and sculpt with a steel trowel after initial set.
  • Lightly mist with water to aid final shaping if needed.
  • For deep repairs, apply in layers. Score each prior layer after set to promote bond with subsequent layers.

Additional Application Notes

  • Consult technical datasheets for related products for detailed guidance.
  • Protect application from freezing for a minimum of 24 hours.
  • Do not use accelerators, admixtures, or other foreign chemicals.

Packaging

  • 50 lb bags(58 per pallet)
  • 10 lb pails(160 per pallet)
  • 5 lb pails(320 per pallet)

Test Data

  • Compressive Strength (ASTM C109):
  • Yield/Density:0.46 cubic feet per 50 lb unit
  • For detailed guidance on curing, refer to the American Concrete Institute Procedure No. 308. Ensure thePor-Rok Concrete Patchremains moist and protected from rapid drying for up to 24 hours.