ABSTRACT
ABSTRACT: In timber-concrete-composite structures the connection is traditionally achieved withmechanicalmeans.The Swiss adhesive producer SIKAhas developed a special adhesivewhich is capable of bonding the concrete both wet and hardened.Within the framework of the project, the wet process was researched. The first project phase was concerned with the possible displacement of the adhesive when the fresh concrete is poured onto the wet adhesive. Key parameters such as the concrete type and the falling height of the concrete were analysed. After the adhesive had been freshly applied onto the wood, a certain time delay was allowed for the adhesive to stiffen before the concrete was poured: this “stiffening time” also proved to be a key parameter. After the production parameters had been optimised, a number of timber-concrete-composites slabs were cast and tested in bending. The test results fully met the expectations. In a third phase, the suitability of the system for a reduced gluing area (e.g. T-beams) is scheduled to be tested.
