In-plane shear behaviour of masonry wall panels strengthened by structural repointing

Abstract

In this paper, a literature review on diagonal compression tests conducted on masonry elements reinforced by means of structural repointing technique is presented. This strengthening technique usually consists of placing in the mortar bed joints, high-tensile strength materials in the form of rods, strips, laminates or bars to increase the ductility and the overall mechanical performance of the structure. Being the reinforcing materials completely hidden after application, this system is particularly suitable for fair-faced masonry structures and historic buildings. In this paper, the main advantages and limits achieved by using reinforced repointing technique as shear strengthening system are investigated.

Hemp-FRP for Seismic Retrofitting of Existing Masonry Buildings

“…To this purpose, many traditional techniques, i.e. reinforced plaster, steel pre-stressed tie rods, mortar injections, steel connectors, etc., can be used (Maragna et al 2016;Modena et al 2002;Valluzzi et al 2005;Preciado et al 2016;Formisano and Marzo 2017;Faggiano et al 2009). Recently, great importance is given to the application of C-FRP (Carbon-Fibre Reinforced Polymers), which is an innovative, reversible e few invasive material for consolidation interventions (CNR DT 200 2013;Milani et al 2016;Milani et al 2017;Mosoarca et al 2017;La Manna et al 2017;Bertolesi et al 2017, Formisano et al 2015.…”

<i>In Situ</i> Shear Tests on Masonry Panels Strengthened with Fiber-Reinforced Mortar Repointing

“…For these reasons, structural repointing of masonry walls is considered an effective strengthening measure especially for historical and civil constructions exposed to peculiar environmental conditions. Many techniques were presented in the literature to this purpose, repointing the bed joints with both new mortar material and inserting different elements such as steel or composite ropes [1].…”

Mechanical Behavior of Masonry Specimens Strengthened by Carbon Bundles Subjected to a Splitting Test

“…However, wet lay-up textiles cannot be applied to fairfaced masonry. In recent years a reinforcement technology, called reinforced repointing technique, has been developed being minimally invasive and respectful of the aesthetic of the masonry elements, [7][8][9][10]. It consists in placing in the mortar bed joints thin laminae or bars of high tensile strength materials, such as carbon, glass, steel or basalt, resulting completely hidden after application.…”