Timber concrete composite

Research was carried out into timber concrete composite construction with Digby Symons and Richard Persaud from Cambridge University Engineering Department, while we were working at Ramboll.

The idea of locking a timber glulam beam to a thin concrete floor slab is new to the UK. Standard industry products were used — concrete, mesh reinforcement, profiled metal deck, large diameter coach screws and a glulam beam.

Initial shear tests were carried out using different types of connnector, and a full-scale 7.5m span floor plate was also tested to failure.

The composite action formed between the timber and concrete (via the coach screws) saw a 3-fold increase in stiffness and 2-fold increase in strength of the glulam beam.

Download research paper : IStuctE timber/concrete composite floor