Ibausil, the International Conference on Building Materials, will take place in Weimar, Germany already for the 19th time on 16.09.-18.09.2015. Headed by the Director of the F.A. Finger Institute for Building Materials Prof. Dr.-Ing. Horst-Michael Ludwig, the program of lectures will focus on questions concerning the development of construction materials and their application. Focal points of the conference are traditionally: inorganic binders, concretes and durability of concretes as well as walling materials, building preservation and recycling.