The specialists erected the wall by fixing concrete steel B 500B to an existing floor slab with the FIS EM 1500 S injection mortar in combination with connecting sleeves with a diameter of 20 mm. The material used, which complies with the ISO and Swiss SIA standards, has the property that it is highly ductile and can therefore deform plastically under load before it fails.
In this way, the 25 cm diameter holes were successfully filled with the injection mortar and the concrete was secured with the system. “Additional advantages are that the solution, along with other system components, is specially suited for reinforcement connections from 8 to 40 mm diameter in concrete and offers high load values,” adds the state-certified construction engineer. “The system temperature of up to 5°C is also suitable for underwater installation.”
There was no normal concrete as the substrate. In the run-up, Bernd Wetzel and employees of the construction company Xaver Lutzenberger GmbH & Co. KG undergoes extensive tests. By means of pull-out tests, the experts tested the load-bearing capacity of the installed system consisting of FIS EM injection mortar, reinforcement rod and concrete using a rock anchor test device at 200 kN tensile force, which was determined in coordination with the engineering office Konstruktionsgruppe Bauen AG. For this purpose, the employees of Lutzenberger GmbH sailed over the anchoring points in a boat. They used a reinforcement sleeve as a connection to extend the bars and fitted a steel pipe on top of them. The test device was placed on it and pulled.
