Product Data Sheet Show all documents

SikaRapid®-2

Setting accelerator for concrete and mortars

SikaRapid®-2 is a liquid admixture to promote early setting and strength development without influencing the final strength

    • compatible with superplasticisers
    • increases strength between 6–24 hours
    • furthers early green strength
    • accelerates setting in cold temperatures
    • faster resistance to frost
    • earlier demoulding of formwork
    • earlier removal of curing membranes
    • earlier loading or trafficking
    • reduces requirements for heat or steam curing
    • no negative effect on final strength
    • does not contain chlorides
    • suitable for steel reinforced concrete
    Product Data Sheet Show all documents

    Usage

    SikaRapid®-2 is suitable for applications where fast early setting and early strength development is required
    • precast concrete
    • ready-mix concrete
    • insitu mixed concrete or mortrars
    • slip form concrete
     

    Advantages

    • compatible with superplasticisers
    • increases strength between 6–24 hours
    • furthers early green strength
    • accelerates setting in cold temperatures
    • faster resistance to frost
    • earlier demoulding of formwork
    • earlier removal of curing membranes
    • earlier loading or trafficking
    • reduces requirements for heat or steam curing
    • no negative effect on final strength
    • does not contain chlorides
    • suitable for steel reinforced concrete

    Packaging

    drum, IBC, bulk supply

    Colour

    Clear yellow liquid

    Product Details

    Sustainability / Certifications / Approvals

    CERTIFICATES AND TEST REPORTS

    Conforms to the requirements of EN 934-2 table 6
    Product Information

    Composition

    Mixture of organic and inorganic complex agents

    Shelf life

    12 months in original unopened containers

    Storage conditions

    Stored in cool dry conditions between 5 °C and 25 °C protected from direct sun light and freezing

    Density

    ~1,34 kg/l

    Conventional dry material content

    ~48 M-%

    Viscosity

    ~10 mPa s at 23 °C

    pH-Value

    ~8,4

    Total chloride ion content

    < 0,1 M-%

    Equivalent sodium oxide

    < 3,0 % (as Na2O w/w)
    Technical Information

    Concreting guidance

    The standard rules of good concreting practice concerning production and placing shall be followed.  Laboratory trials shall be carried out before hand, especially when suing a new mix design or producing new concrete components.  Fresh concrete shall be cured according to recognised techniques and applied as early as possible.

    Application

    Application Information

    DISPENSING

    SikaRapid®-2 is added to the guaging water or added simultaneously with the guaging water into the concrete mixer.

    It is also possible to add SikaRapid®-2 to the basic concrete carried in a transit mixer at the place of discharge.  In this case, an additional mixing time of 1 minute per m3 of concrete must be observed.  The concrete shall be checked for uniform consistency prior to discharge from a transit mixer.
    Consumption

    Recommended dosage

    1,0–2,0 % by weight of cement

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