Tag: finish

  • TABLE PRECAST FINISHES

    Table precast finishes is the replication process. The surface of the manufacturing table affecting the precast surface. Sometimes the table is covered by form liners, bricks, signage letters & pattern to make the finishes.

    a) Normal table finish:

    Non-exposed surface of the precast is made by this type of table. Same table is used for multiple time for casting the precast. Surface of the table is drilled and nailed for component fixing. Components fixing damages not fixed at every time of repetition, which result poor surface finish.

    b) Good table finish:

    The damaged table surface is being fixed by welding and grinding before every time of casting. Which means each and every time the surface of the precast panel surface will be made well & good.

    c) Form Liner finish:

    custom façade design with architectural concrete, elastic form liners are used to form the finish by placing it on the table before pouring the concreate for the particular design of concrete facades.

    d) Retarder finish:

    It is a type of acid wash, spraying a retarding agent on the surface of the fresh concrete and leaved long time and washed to make aggregate exposed.

    e) Patterned finish:

    As per the Architecture or client requirement various shape of profile needs to make on precast surface by placing the readymade patterns on the table to form.

    f) Brick snap finish:

    Bricks are arranged on the table for required shape before pouring the concrete and demold the panel which has the bricks attached surface of the precast panel.

  • NON-TABLE PRECAST FINISHES

    The finishes are performed without help of table faces. These type of finishes are listed as below…

    a) Float finish:

    Float is a tool used to finish a concrete surface by floating on it. After the concrete is poured on the table is levelled by using screed, then float tool is used. Float may be the small or large handle tool sometimes its powered by engine.

    b) Trowel finish:

    Trowel also a tool used to finish a concrete surface by pushed and pulled across the concrete surface. Trowels are performed in both manual and mechanical types.

    A manual trowel consists of a flat steel blade with an attached handle on top. A Mechanical trowel is used for large commercial projects which have rotational of large fans with the blades directly against the concrete surface.

    c) Polished finish:

    Polished Finish is a multi-step process where a Precast concrete is polished with bonded abrasives or chemicals in order to grind a precast concrete surface. It is then refined with each grind in order to achieve a specified level of appearance.

    d) Broom finish:

    Broom finish of the concrete is rough surface finished made by forcing or dragging a broom on the troweled surface while the concrete is still fresh.

    e) Sand Blast Finish:

    A sandblasted precast panel has a rough finish which is achieved when a precast panel surface is subjected to a high-pressure blast of siliceous sand through an air gun.