Repair and restoration mixture for concrete
- 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
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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|Composition||a mixture of binders with mineral fillers and polymer modifiers|
|Appearance||homogeneous free-flowing mixture without impurities|
|Mixing ratio||3.25 – 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 size||no more than 0.63 mm|
|Expiration date from the beginning of mixing||not less than 30 minutes|
|Air and substrate temperature during application||from + 5 ° С to + 30 ° С|
|Mixing water temperature||from +15 ° С to +20 ° С|
|Application layer thickness||from 10 to 30 mm|
|Compressive strength after 3 days||not less than 6.0 MPa|
|Compressive strength after 28 days||not less than 30 MPa|
|Flexural strength after 28 days||not less than 5.0 MPa|
|Shrinkage||no more than 1.2 mm / m|
|Substrate adhesion||not less than 2.0 MPa|
|Adhesion to the substrate after alternating freezing and thawing 50 cycles||not less than 2.0 MPa|
|Frost resistance||not less than 75 cycles|
|Operating temperature of the hardened mortar||from -30 ° С to +70 ° С|
|Dry mix consumption||~ 2.0 kg / m² per 1 mm of layer thickness|