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  2. Formwork - Wikipedia

    en.wikipedia.org/wiki/Formwork

    Rebar has been stubbed up out of the concrete slab to form the base of future columns Timber formwork for a concrete column. Adjustable metal screw jacks both stabilize and plumb the form Aluminum formwork system Sketch of the side view of traditional timber formwork used to form a flight of stairs Placing a wall form. A matching form will be ...

  3. Cast-in-place concrete - Wikipedia

    en.wikipedia.org/wiki/Cast-in-place_concrete

    Animation depicting construction of multi-story building using aluminum handset formwork. Steel and plywood formwork for poured in place concrete foundation. Cast-in-place concrete or Cast-in-situ concrete is a technology of construction of buildings where walls and slabs of the buildings are cast at the site in formwork. [1]

  4. Autoclaved aerated concrete - Wikipedia

    en.wikipedia.org/wiki/Autoclaved_aerated_concrete

    When AAC is mixed and cast in forms, aluminum powder reacts with calcium hydroxide and water to form hydrogen. The hydrogen gas foams, doubling the volume of the raw mix and creating gas bubbles up to 3 millimetres ( 1 ⁄ 8 in) in diameter—it has been described as having bubbles inside like "a chocolate Aero bar ". [ 26 ]

  5. Form liner - Wikipedia

    en.wikipedia.org/wiki/Form_liner

    Other form liner materials used can include polystyrene foam, fiberglass, and even aluminum-- styrene plastic, ABS plastic, and urethane are considered to be the industry standard, and are most often specified in plans by architects and engineers. The form liners are attached to forms and concrete is placed against the liner.

  6. Insulating concrete form - Wikipedia

    en.wikipedia.org/wiki/Insulating_concrete_form

    The first expanded polystyrene ICF Wall forms were developed in the late 1960s with the expiration of the original patent and the advent of modern foam plastics by BASF. [citation needed] Canadian contractor Werner Gregori filed the first patent for a foam concrete form in 1966 with a block "measuring 16 inches high by 48 inches long with a tongue-and-groove interlock, metal ties, and a waffle ...

  7. Concrete - Wikipedia

    en.wikipedia.org/wiki/Concrete

    A single concrete block, as used for construction. Concrete is a composite material composed of aggregate bonded together with a fluid cement that cures to a solid over time. . Concrete is the second-most-used substance in the world after water, [1] and is the most widely used building material

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