C: TYPICAL DAMAGE TO INDUSTRIAL FLOORS BUILT IN CONCRETE AND STEEL-FIBER REINFORCED CONCRETE

摘要

To prevent cracking in non-load bearing floor slabs, joints should usually be included and the slab be consistently separated from all fixed components (columns, walls, wells, foundations). This contribution presents frequent causes of cracking in design and execution (i. e. not caused by the use of the floors). TYPE 1: FORMATION OF FINE CRACKLES These cracks occur because the concrete surface zone is drying too quickly, which is often due to insufficient post-treatment of the surface. Although it is difficult to treat extensive surfaces by simple methods, the principle of commencing such a post-treatment as early as possible (as well as its necessity) should always be adhered to.%Zur Vermeidung von Rissen in nicht tragenden Bodenplatten sollten in der Regel Fugen ausgeführt und konsequente Trennungen der Bodenplatte von allen festen Einbauten (Stützen, Wände, Schächte, Fundamente) vorgenommen werden. Häufige Ursachen für Rissbildungen in Planung und Ausführung (nicht durch Nutzung) werden vorgestellt. TYP 1: KRAKELEERISSBILDUNG Ihre Ursache liegt in der zu schnellen Austrocknung der Betonrandzone, Grund ist oft eine unzureichende Nachbehandlung der Oberfläche.