Process for introducing an injection material into a hollow space in a reinforced concrete structure

摘要

Process for introducing a mass of an injection material corresponding in volume to the volume of an at first air-filled hollow space into the hollow space in reinforced concrete structures (in particular into a prestressing tube of a prestressing assembly with prestressed prestressing steels arranged in the prestressing tube). The air is first sucked out of the hollow space with the aid of a vacuum pump to a predetermined evacuation pressure. In addition, an air-volume measurement is carried out and, determined by the air volume measurement, the injection mass is injected into the hollow space. The volume of air under external air pressure po sucked out via the vacuum pump is measured, the volume of the hollow space is determined from this measurement and the corresponding mass of the injection material is injected into the hollow space.