Mixture repair-reducing sulfate-resistant fine-grained


  • high strength (not less than 35 MPa)
  • quick hardening (up to 3 hours)
  • excellent adhesion to concrete (at least 2.0 MPa)
  • microfiber reinforced
  • crack resistant
  • frost resistant
  • hydrophobic and vapor permeable
  • convenient and easy to use
  • resistant to salt

Packing: 25 kg

  • Application
  • Specifications
  • Features
  • Reviews

The PRR-251 mix is ​​intended for repair and restoration of concrete and reinforced concrete foundations, including objects of transport construction exposed loads RCC I, RCC II and
RCC III. Effective at repairing chips, voids, sinks, irregularities and other defects
surfaces of reinforced concrete and concrete substrates up to 30 mm thick with salt
sulfates impact. Do not use for leveling and repairing lightweight concrete foundations and foundations subject to significant mechanical effects.

The PRR-251 is an integral part of the system of  concrete restoration and protection . It is used when performing complex repairs of concrete and reinforced concrete structures caused by long-term operation or destruction under the influence of mechanical loads and corrosion processes – monolithic frame structures, retaining walls, tanks (including for wastewater).

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Compositiona mixture of binders with mineral fillers and polymer modifiers
Appearancehomogeneous free-flowing mixture without impurities
Colourshaded gray
Mixing ratio4.5 – 5.0 liters of water per 25 kg of dry mix
~ 0.19 ± 0.01 l of water per 1 kg of dry mix
Aggregate sizeno more than 0.63 mm
Expiration date from the beginning of mixingnot less than 30 minutes
Air and substrate temperature during applicationfrom + 5 ° С to + 30 ° С
Mixing water temperaturefrom +15 ° С to +20 ° С
Application layer thicknessfrom 10 to 30 mm
Compressive strength after 3 daysnot less than 6.0 MPa
Compressive strength after 28 daysnot less than 30 MPa
Flexural strength after 28 daysnot less than 5.0 MPa
Shrinkageno more than 1.2 mm / m
Substrate adhesionnot less than 2.0 MPa
Adhesion to the substrate after alternating freezing and thawing 50 cyclesnot less than 2.0 MPa
Frost resistancenot less than 75 cycles
Operating temperature of the hardened mortarfrom -30 ° С to +70 ° С
Dry mix consumption~ 2.0 kg / m² per 1 mm of layer thickness

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