Repair of cementitious floorings in the Stachus-Passagen mall in Munich –
To install extensive cementitious, polished concrete floors with only a few joints (terrazzo), a double-layer bonded screed is applied wet-on-wet or after hardening of the bottom layer. In the Stachus-Passagen mall in Munich, the existing floor surfaces of the building shell were prepared and predominantly covered with double-layer bonded screeds delivered in ready-mixed condition. The Terraplan concrete flooring system was installed as the top layer.
The cracks that had formed after several weeks were to be repaired because their edges broke out as a result of heavy floor use. Also, the...