Structural Behaviour Investigations Of Specially Light Concrete By Holographic Interferometry

The aim of this work is to analyse the bulk and local mechanical features of specially light concrete under load. Observation of yield zone, microcracks appearance and crack development is followed at the tip of incision made in advance. Tfte various techniques of holographic interferometry were used for optimal observation sensitivity to the persumed displacement and for coherent speckle noise elimination. The actual fringe patterns are interpreted on the basis of finit-element model analysis of the rectangular beam under imposed boundary conditions.