Building with infra-lightweight concrete – A precast solution

Many architects love exposed concrete. However, in buildings intended for permanent human habitation, they encounter a particular challenge: monolithic facades made of normal concrete and lightweight concrete usually do not meet the high requirements for thermal insulation without thermal insulation. If a thermal insulation layer is installed on the facade, the concrete disappears behind it: No exposed concrete. Another disadvantage of such two-layer facade systems: Concrete is eminently recyclable, but only if it is free of all non-mineral constituents. Infra-lightweight concrete offers the monolithic solution. Infra-lightweight concrete is a high-performance concrete, which promises durable, sustainable and attractive buildings due to its low dry density as load-bearing thermal insulation. Monolithic structures made of exposed concrete can once again meet economic and ecological requirements. Infra-Lightweight concrete opens new ways to “Baukultur” and the design appropriate to the material. Several projects have been built successfully– now it’s time for precast. 

Dr. B. Reyher

Boris Reyher has been working as a Structural Engineer with sbp since 2007, where he has directed the Berlin office since 2010 and was appointed to Associate in 2014. Before that, he worked for Buro Happold in England, after finishing his doctoral thesis in numerical mechanics at the Technische Universität Berlin. He studied civil engineering at TU Berlin and the University of Michigan at Ann Arbor. His focus is on bridge construction as well as steel, concrete and membrane constructions for buildings, in particular research and application of infra-lightweight concrete.