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HKUEA-1 Expanding Agent
Concrete Admixture

HKUEA-1 Expanding Agent

This product is a gray powder. It reacts chemically with cement mineral components in the presence of water. The reaction product is hydrated calcium sulphoaluminate (i.e. ettringite) or calcium hydroxide or ferrous hydroxide, etc., which will cause expanding effect. Under the constraint of steel bar and ortho position, a certain pre-stressing stress is generated to prevent or reduce harmful cracks in the structure; the generated reactant crystals have the function of filling and clogging capillary pores, and increasing the compactness of the concrete.

    Performance

    This product mainly implements the standard GB/T 23439-2017 Expansive agents for concrete. All the performance meet or exceed the requirements of this standard.

    Application

    This product is suitable for compensating shrinkage concrete: underground, underwater, tunnel and other structures, large volume concrete (except for dams), reinforced pavement, roof and bathroom waterproofing, component reinforcement, leakage repair, prestressed concrete, backfilling grooves, etc; Expansion concrete for filling: structural post pouring strip, tunnel plug, filling between steel pipes and tunnels, etc; Expansion mortar for grouting: grouting the base of mechanical equipment, fixing anchor bolts, beam column joints, component reinforcement, reinforcement, etc; Self stressing concrete: Self stressing reinforced concrete pressure pipes used only at room temperature.

    Uses

    1.The recommended dosage is 8~12%. The user can perform a trial test according to the design requirements to obtain the best dosage;
    2.This product is forbidden to apply in projects above 80 °C for long time. Insulation measures should be taken when the construction temperature is lower than 5 °C;
    After the concrete construction is completed, it is necessary to strengthen the maintenance, and keep the full humidity no less than 7d.

    Package& storage

    1.This product is 25 ± 0.5kg/bag, packaged in kraft paper bags, and can also be customized according to user needs;
    2.The shelf life of the product is 1 year, and after exceeding the shelf life, the product performance should be determined through testing;
    3.This product is non flammable and explosive, non-toxic, and pollution-free;
    Prevent puncture, moisture, and sun protection during storage and transportation.

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