G. FAELLA, G. MANFREDI and R. REALFONZO
University of Naples Federico II
The Study of the mechanical behaviour of traditional masonry walls — that is, made of natural stones using low strength mortars — is an interesting topic in retrofitting, refurbishment and seismic upgrading. Some results from compression tests on luff masonry walls are given. The walls have been made with different block arrangements —properly bonded and as two leaves infilled with smaller stones — in order to reproduce those typical of existing buildings; some walls were subsequently strengthened with grout injections and reinforced. The results obtained allow strength and deformabiiity to be evaluated and the improvement of the mechanical properties due to strengthening and retrofitting techniques to be determined. Finally, the experimental evaluation of the o—e curves enabled the reliability of some analytical relationships to he checked against the actual behaviour of tuff masonries.