Injection renovations of cracked joints

Abstract

Structural behaviour and response peculiarities of the moment-resisting RC frame systems sujected to horizontal extreme action effects caused by wind velocity pressures or earthquake motions are discussed. Results of experimental trials on the fragments of cast-in-situ RC multi-storey buildings with load-carrying walls and girderless floors as frame systems are presented. The cracking process, hysteresis loops, energy dissipation and resistance of primary and repaired joints are analysed. An effect of injections of epoxy resin grouts on the joint resistance and deformations is under consideration.