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PRR-250

Repair and restoration mixture for concrete

Properties:

  • crack resistant and high strength
  • resistant to oils and chemicals
  • vapor permeable
  • high adhesion
  • convenient and easy to use
  • resistant to moderate mechanical stress
  • frost resistant

Packing: 25 kg

Application
  • Application
  • Specifications
  • Features
  • Reviews

The PRR-250 mixture is intended for repair and plastering of horizontal and vertical concrete and reinforced concrete substrates.
Effective in the repair of chips, voids, sinks, bumps and other local defects on the surface of reinforced concrete and concrete substrates, with a layer thickness of 10 mm to 30 mm.

! Do not use for leveling and repairing light concrete foundations and deformable substrates.

It is used for complex repairs of concrete and reinforced concrete structures caused by long-term operation: monolithic frame structures, retaining walls, ramps, columns, balconies, couplers, landings and marches, etc.

 

 

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Compositiona mixture of binders with mineral fillers and polymer modifiers
Appearancehomogeneous free-flowing mixture without impurities
Colourshaded gray
Mixing ratio3.25 – 3.75 liters of water per 25 kg of dry mix

~ 0.14 ± 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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