Abstract
The use of stainless steel rebars to reinforce masonry structures has become established as an eminently efficient methodology. From among the numerous techniques available, bed-joint structural repointing and superficial reinforcement with rebars or meshes attached to surfaces have become widespread, thanks to the excellent results they have produced in recent decades. Both techniques imply the use of diameters less than 6 mm and thin coverings. This article deals with the characterization of the bonding behavior of the rebar under these special circumstances. To this end, several finite element analyses have been carried out to identify the possible relationships between pull-out forces in various situations. These models allow certain conclusions to be drawn regarding the influence of the thickness of covering, boundary conditions, and geometrical aspects of the rebars in bonding. Certain mathematical expressions that relate the various conclusions from this research are finally laid out.
Highlights
The use of stainless steel rebars to reinforce masonry structures has become established as an eminently efficient methodology
Ninety-six samples were analyzed taking into account several values of the thickness of the covering and Young’s modulus of the mortar in which the rebar is embedded as well as different boundary conditions (Section 3.1)
42 samples were obtained for different rib shapes and were analyzed under different boundary conditions and with two values of effective covering (Section 3.2)
Summary
The use of stainless steel rebars to reinforce masonry structures has become established as an eminently efficient methodology. The suburbs generally accommodate the majority of the population in large cities, a number of which are ancient neighborhoods without any historical or artistic value, but have been built with masonry In this last case, the repair of masonry becomes a social problem for administrations since the repair must be carried out on a reduced budget while preventing the reallocation of residents as far as possible. Many of the repair and consolidation techniques usually applied to masonry structures include the introduction of connectors and/or reinforcements These have traditionally been steel pieces located either in parallel or perpendicular to the wall faces [1,2]. Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations
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