A mould in which a concrete structure of uniform cross section is cast by filling the mould with liquid concrete and then continuously moving and refilling it at a sufficiently slow rate for the emerging part to have partially set.
 Example sentencesExamples
-  This mixture of straw and clay is most commonly packed into slip forms, creating walls that are essentially ‘rammed straw.’
 -  Once each layer is complete, the slip form is moved up and the next layer is tamped until the wall is complete.
 -  To overcome these problems, the Directorate introduced the Slip Form method to build the superstructure of lighthouse towers.
 -  Vertical slipform relies on the quick-setting properties of concrete requiring a balance between early strength gain and workability.