Bonded Hybrid Slabs of Light-Weight Concrete and Glued Laminated Timber

Typical wooden beam ceilings often have problems with excessive vibrations and inadequate sound insulation. Due to increasing live loads and a stronger sense of safety over the years, wooden beam ceilings with a span up to 10 m cannot fulfill the serviceability limit states of Eurocode 5. A concrete layer applied to the timber increases the stiffness of the whole structure and thus contributes to the improvement of serviceability performance. In such applications, both materials are utilized according to their mechanical properties; the concrete is used in the compression zone and the wood in the tension zone. Such a composite construction is advantageous not only for rehabilitation, but also for new construction as a prefabricated segment, especially due to its low weight compared to concrete elements.