KPRO Repair CRM-201

Product Application
KPRO CRM 201 is a General Purpose Concrete Reinstatement Mortar suitable for internal and external use, vertical, horizontal, and overhead concrete surfaces. CRM 201 is a one-component cement-based polymer modified Class R3 mortar.

CRM 201 is suitable for use on suitably prepared concrete surfaces in the following applications:

  • Repairing chips, gaps and holes in concrete
  • Making good of corners on columns, pillars, walls, beams and slabs
  • Smoothing over defects such as honeycombing, air voids, spacer holes etc.
  • Repairs to soffits, lintels and beams
  • Repairs to precast concrete elements such as stairs, tanks, liners, panels etc.
  • Repairs by methods 3.1, 3.3, 4.4, 7.1 and 7.2 as set out in EN 1504-10

 

Product Use
Suitable for use in temperatures between +5°C and +25°C. Substrates should be clean, dry and free from all dust and grease. A pull-off test should then assess the effectiveness of decontamination. Cut back the repair area’s edges to a depth of at least 10 mm to avoid feather-edging and provide a square edge. Break out the complete repair area to a minimum depth of 10 mm up to the cut edge. The preparation of the concrete substrate is of critical importance.

This product only requires the addition of clean potable water. K-PRO CRM products should be mixed in a suitable forced action mixer or spiral screw paddle drill at a low speed to ensure a lump-free, smooth, consistent mortar. Mix the contents of a 25kg bag with 4.0-4.5 litres of clean potable water. Water should be measured and placed in the mixing container before adding the full 25kg bag of dry powder and mixed for a minimum of 3-5 minutes taking care not to entrain air.

Expose and remove any corroded steel in the area to be repaired. Remove all loose scale and corrosion deposits. Steel should be cleaned to a bright condition, including the
back of exposed steel bars, using an abrasive-blasting technique. If corrosion has occurred due to the presence of chlorides, the steel should be high-pressure washed with clean water immediately after abrasive-blasting to remove corrosion products from scratches and depressions of the steel surface. Prime the prepared steel (if present), using a brush, with KPRO Repair-PRIMEX, ensuring complete coverage and drying.

This product only requires the addition of clean potable water. K-PRO CRM products should be mixed in a suitable forced action mixer or spiral screw paddle drill at a low speed to ensure a lump-free, smooth, consistent mortar. Mix the contents of a 25kg bag with 4.0-4.5 litres of clean potable water. Water should be measured and placed in the mixing container before adding the full 25kg bag of dry powder and mixed for a minimum of 3-5 minutes taking care not to entrain air.

Benefits
This product offers many advantages for General Purpose Reinstatement Mortar which include:

  • Pre-mixed product only requiring the
    addition of water
  • Excellent bond to concrete surfaces
  • Pre-mixed on component eliminates
    the inaccuracy of site mixing
  • Low permeability to CO2 and chlorides
  • High build characteristics
  • Chloride free

 

 

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