background

REPAIRING IN KOLKATA:

  • SPRAY POLYMER :

    This technique is a ready-to-use sprayable – cement based repair mortar, giving high early strength, reduced rebound and allows for thickness upto 150mm in one go. This polymer based mortar is to be pressure sprayed ,with addition of required amount of water and no in-situ addition of any other material. The repair work is speedy and the set mortar attains strength upto 40N/mm² in 28 Days.
    USES: Reinstating of columns, cement silos and chimneys, retaining walls, water front structures, dams, irrigation canals, tunnel linings etc.

    FIBER WRAPPING :

    Carbon and Glass Fibre Reinforced Polymers (FRP), also called composite materials, are popularly used in structural strengthening for steel, wood, concrete, seaport and aerospace applications because of their cost-effectiveness and superior performance in high strength, light weight,corrosion resistance, bomb blast and earthquake protections. FRP wraps are easy to apply and can be used on any size or shape of structural member. Traditional techniques for strengthening, such as adding concrete and reinforcing steel around the outside of a structural member, external post-tensioning, or adding structural steel supports (shoring) often are more expensive due to the extra work to get everything into place. In some cases, it might be used on new construction, although at this time that is usually only in response to some sort of design or construction error. In appropriate applications, FRP strengthening can be 30% to 50% less expensive than traditional strengthening due to the ease of installation.

    .

    Advantages
    . Increases flexural, shear or confinement strengthening of structural members.
    . Where speedy repair and high strengths are required.

    MICRO JACKETING :

    Micro concrete is the ready to use, self flowable mixture generally made under strict quality control in automated factories.

    Advantage
    . Attains high early and ultimate strength
    . It's gaseous expansion qualities compensates for shrinkage and settlement in the plastic stage.

    EPOXY MORTAR :

    A three-component, water-washable 100% solids epoxy mortar system for installations where exceptional high-strength and chemical and impact resistance is required. 100% solids epoxy systems unique formula produces a mortar with greater bond and compressive strengths and improved chemical resistance over conventional cement or emulsion-based setting systems. Use for epoxy mortar patching and overlays on interior, horizontal substrates.

    SACRIFICIAL ANODE :

    The principle of cathodic protection is in connecting an external anode to the material to be protected from corrosion and passing of an electrical DC current. So that all area of the metal surface become cathodic and therefore do not corrode. The external anode may be a galvanic ( sacrificial ) anode or it may be an impressed current anode where the current is impressed from external D.C source.Three metals that can be used as sacrificial anodes are zinc, aluminium, and magnesium.

    .

Page 1 of 1