Article No. 109625

    Betofix R4

    Fibre-reinforced PCC for static renovation of concrete structures

    Colour: grey | 1096
    Packaging unit

    Product specifications

    On delivery

    Flexural tensile strength (28 days) ≥ 8.0 N/mm²
    Reaction to fire Class A1
    Chloride migration coefficient after 28 days 28 days = 1.27 • 10-12 m²/s
    90 days = 0.70 • 10-12 m²/s
    Compressive strength 1 day: ≥ 20 N/mm²
    7 days ≥ 45 N/mm²
    28 days ≥ 50 N/mm²
    Dynamic E-modulus ≥ 25000 N/mm²
    Moisture class assignment WO, WF, WA, WS
    External surveillance QDB, KIWA
    Maximum grain size 2 mm
    Adhesion capacity (DIN EN 1542) (28 days) ≥ 2.0 N/mm²
    Water requirement Approx. 10.8% corresponds to 2.7 l/25 kg
    Exposure class assignment Carbonation XC1, XC2, XC3, XC4 Chlorides without seawater XD1, XD2, XD3 Chlorides from seawater XS1, XS2, XS3 Frost attack with/without de-icing salt XF1, XF2, XF3, XF4 Chemical attack XA1, XA2* Wear load XM1, XM2 * Sulphate content of water (SO4²-) ≤ 1500 mg/l

    The stated values represent typical product characteristics and are not to be construed as binding product specifications.

    Field of application

    • For use on floors/walls/ceilings indoors and outdoors
    • Repairing concrete structures with rough surfaces in areas subjected to static and dynamic loads
    • Restoration of concrete structures, load-bearing, M3
    • Repair of traffic structures in accordance with ZTV-ING
    • Repair of hydraulic structures in accordance with ZTV-W


    • Combines corrosion protection, a bonding layer and coarse and fine mortar
    • M3 mortar according to RiLi-SIB concrete guidelines and class R4 according to DIN EN 1504-3
    • Can be sprayed and applied by hand
    • Single-layered application thickness in cracks up to 80 mm
    • Maximum grain size: 2 mm
    • Reaction to fire: class A1
    • Approved by the German Federal Highway Research Institute (BASt)
    • Compressive strength after 28 days: ≥ 50 N/mm²
    • Preparation
      • Substrate requirements

        Clean, dust-free and capable of supporting a load.

      • Preparations

        Expose all steel parts, derust to a degree of purity of SA 2½

        Pre-wet the substrate so that it is slightly moist.

    • Application
      • Mortar pump/ Trowel / Filling knife / Smoothing trowel / Mortar pump
      • Application temperature: min. 5 °C max. 30 °C
      • Application requirements

        Temperature of the material, air and substrate: from min. +5 °C to max. +30 °C

      • The pre-wet substrate must still be slightly absorbent.

        Use the product to apply a scratch coat.

        Dilute the product slightly before applying the product to hard-to-reach places in the form of contact sludge.

        Layer thickness, single-layered 5–25 mm

        Layer thickness, double-layered < 50 mm, with the second layer applied while the first is still wet

        Layer thickness, single-layered in cracks < 80 mm

    • Application instructions
      • If the concrete cover measures less than 10 mm after completing repair work, protect the concrete reinforcement against corrosion using Betofix KHB.

        Mixing by hand and the mixing of partial quantities are not permitted.

        Once it has hardened, mortar must not be made workable again by adding either water or more wet mortar.

        Protect wet mortar surfaces against frost, rain and drying out too quickly for at least 4 days.

        Hairline/shrinkage cracks are safe and are not cause for complaint as they do not impair the properties of the mortar.

        Please contact Remmers Technical Service (phone +49 5432 83-153) before applying with machine processing.

    • Working tools / cleaning
      • Mortar pump/ Trowel / Filling knife / Smoothing trowel / Mortar pump
      • Mixer, trowel, smoothing trowel Suitable machine technology

      • Clean tools with water while the material is still fresh.

    • Storage / shelf life
      • Protect form moisture
      • Shelf-life 9 months
      • If stored dry in closed containers, the product will keep for approximately 9 months.

    • Usage
      • 2.0 kg / mm thick layer / m²
      • Approx. 2.0 kg/m²/mm layer thickness, or approx. 2.0 kg/dm³

    • General information
      • The mixing water must be of drinking water quality.

        May contain traces of pyrite (iron sulphide).

        Low chromate content in accordance with Directive 2003/53/EC.

        The characteristic data of the product were calculated under laboratory conditions at 20°C and 65% relative humidity.

    • Disposal instructions
      • Larger quantities of leftover product should be disposed of in the original containers in accordance with the applicable regulations. Completely empty, clean containers should be recycled. Do not dispose of together with household waste. Do not allow to enter the sewage system. Do not empty into drains.

    • Safety / regulations
      • For further information on the safety aspects of transporting, storing and handling the product and on disposal and environmental matters, please see the current Safety Data Sheet.

    Possible system products