Concrete calendar 2021

In the Concrete Calendar 2021, the topic of sustainability, the conscious and careful use of resources in new construction and in the building of existing structures are examined from the special perspective of construction with precast elements and retrofitting. In addition to updated contributions on service life design, the basics of building with precast concrete elements in building construction and the wood-concrete composite construction method, special attention is paid to resource efficiency in building with precast concrete elements. This involves innovative approaches to design, joining techniques and manufacturing technologies (including automation). In this context, the element construction method with lattice girders should also be mentioned, which in turn combines the advantages of prefabrication with the flexibility of in-situ concrete construction.

The topic of sustainability also includes the careful handling of existing structures. In the Concrete Calendar, the reinforcement of concrete components with bonded reinforcement and bolted connections is addressed. In addition to an updated article on bonded reinforcements with CFRP lamellas and steel plates with explanations and examples, the DAfStb guideline "Reinforcement of concrete components with bonded reinforcement" is printed.

Under the heading "Integral Structures", the Concrete Calendar summarizes the current state of knowledge for this construction method for bridges and supporting structures in building construction. A number of articles are devoted to new types of concrete and their possible applications with regard to new construction and retrofitting, such as UHPC, steel fiber concrete and infralight concrete.