Slipform
Slipform is similar in nature and application to jumpform, but the formwork is raised vertically in a continuous process. It is a method of vertically extruding a reinforced concrete section and is suitable for construction of core walls in high-rise structures – lift shafts, stair shafts, towers, etc. It is a self-contained formwork system and can require little crane-time during construction.

This is a formwork system which can be used to form any regular shape or core. The formwork rises continuously, at a rate of about 300mm per hour, supporting itself on the core and not relying on support or access from other parts of the building or permanent works.

Commonly, the formwork has three platforms. The upper platform acts as a storage and distribution area while the middle platform, which is the main working platform, is at the top of the poured concrete level. The lower platform provides access for concrete finishing.

https://www.concretecentre.com/Building-Elements/Formwork/Sl...

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Slip forming, continuous poured, continuously formed, or slipform construction is a construction method in which concrete is poured into a continuously moving form.[1] Slip forming is used for tall structures (such as bridges, towers, buildings, and dams), as well as horizontal structures, such as roadways. Slipforming enables continuous, non-interrupted, cast-in-place "flawless" (i.e. no joints) concrete structures which have superior performance characteristics to piecewise construction using discrete form elements. Slip forming relies on the quick-setting properties of concrete, and requires a balance between quick-setting capacity and workability. Concrete needs to be workable enough to be placed into the form and consolidated (via vibration), yet quick-setting enough to emerge from the form with strength. This strength is needed because the freshly set concrete must not only permit the form to "slip" by the concrete without disturbing it, but also support the pressure of the new concrete as well as resist collapse caused by the vibration of the compaction machinery.


Slipforming Grain silo in Zürich for Swissmill in 2015 with "Bitschnau Slipform" Height: 118m

Continuous slip formed gravity-based structure supports under construction in a Norwegian fjord. The visible jib cranes would each be delivering buckets of concrete to the support cylinders during the continuous pour of concrete creating seamless walls.
In vertical slip forming the concrete form may be surrounded by a platform on which workers stand, placing steel reinforcing rods into the concrete and ensuring a smooth pour.[2] Together, the concrete form and working platform are raised by means of hydraulic jacks.[3] Generally, the slipform rises at a rate which permits the concrete to harden by the time it emerges from the bottom of the form.[1]

In horizontal slip forming for pavement and traffic separation walls concrete is laid down, vibrated, worked, and settled in place while the form itself slowly moves ahead. This method was initially devised and utilized in Interstate Highway construction initiated by the Eisenhower administration during the 1950s.

https://en.wikipedia.org/wiki/Slip_forming

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Ilustracje
https://docplayer.pl/36164525-Systemy-slizgowe-dla-budownict...