Concrete calendar 2021

The theme of sustainability, the conscious and careful use of resources in new construction and renovation, is highlighted in the Concrete Calendar 2021 from the special perspective of building with precast elements and strengthening existing structures. In addition to updated contributions on service life assessment, the fundamentals of building with precast concrete elements in structural engineering, and the wood-concrete composite construction method, particular attention is given to resource efficiency when constructing with precast concrete elements. This includes innovative approaches to design, joining techniques, and manufacturing technologies, including automation. In this context, the element construction method with lattice girders is also mentioned, which combines the advantages of prefabrication with the flexibility of in-situ concrete construction.

Sustainability also encompasses the careful treatment of existing structures. The Concrete Calendar addresses the reinforcement of concrete components with bonded reinforcement and screw connections. Alongside an updated contribution on bonded reinforcements with CFRP strips and steel brackets, including explanations and examples, the DAfStb guideline "Reinforcement of Concrete Components with Bonded Reinforcement" is included.

Under the focus "Integral Structures," the Concrete Calendar summarizes the current state of knowledge for this construction method for bridges and load-bearing structures in building construction. A series of contributions is dedicated to novel concretes and their potential applications in new construction and strengthening, such as UHPC, steel fiber concrete, and infralight concrete.