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TCC Norms
In addition to EC 5 »Design and construction of timber structures«, the HBV shall be standardised. In preparation for this, several research institutions in Europe are currently working on a technical specification.
Properties of TCC
- Large load spans
- low dead weight
- good fire resistance
- good sound insulation
- low susceptibility to vibration
- prefabrication possible
A timbered ceiling with TCC is 10 times more rigid
One major objective of refurbishment of timber-beamed ceilings is the improvement in the vibration properties. The shear connectors that are turned into the timber beams and the locally poured concrete reinforce the entire timber ceiling by approximately a factor of 10. The shear connectors under load, but also in the event of earthquakes, under wind loads or high water levels will prevent a relative shift between timber and concrete.
Any shift between beam and concrete is eliminated.
Imagine a model in the form of a thick book with soft binding, where the book’s pages shift laterally at the edge, when the middle part is pressed. In the model, all pages would be bonded full-face on all sides. Thereafter, when subjected pressure, the book would have significantly greater stiffness and stability, since the pages could no longer be displaced relative to one another. This corresponds to the manner in which the vibration is reduced in the Elascon Timber-Concrete Composite system. The built-in connecting screws (shear connectors) prevent the shift been timber beams and concrete virtually entirely.
