Building system with joints of high-strength reinforced concrete

A new building system has been developed during the last ten years. This new system consists of a column/slab system with 6 m x 6 m distance between the columns. The slabs are precast elements of size 2.9 m X 5.9 m and are connected through joints of very high strength fibre reinforced concrete, so-called Densit Joint Cast(R). Also the connection between columns and slabs is made of this material. Using this material very short anchorage lengths for the reinforcement can be applied. This new building system has been used for some new buildings at Aalborg University in Denmark. The paper describes this new building system and the static tests carried out as well as some fire tests. In addition some fatigue tests of the reinforcing bars as well as fatigue tests of tensile specimens consisting of reinforcing bars embedded in Densit Joint Cast(R) are described.