In-Plane Behavior of Infills using Glass Fiber Shear Connectors in Textile Reinforced Mortar (TRM) Technique

Abstract

Masonry has a widespread use in the construction of the buildings even in reinforced concrete or steel frames. Past earthquakes have demonstrated the vulnerability of masonry infills resulted in the human life losses and economic costs. Recently innovative strengthening techniques such as Textile Reinforced Mortar technique (TRM) is used for enhancing the seismic response of the infills. Different procedures were suggested to enhance the bond between rendering mortar of the TRM technique and infilled frame to prevent its detachment. In this study commercial glass fiber shear connectors were used for connecting the TRM layer to the infilled frame and their response were investigated by testing the samples in the in-plane direction. The quasi static in-plane test was performed cyclically on two specimens; one without strengthening layer and another strengthened with commercial textile meshes. The results showed that TRM technique enhances the in-plane response of the infilled frames but the effectiveness of the shear connectors could be improved using proper materials.

Structural and thermal retrofitting of masonry walls: An integrated cost-analysis approach for the Italian context

“…A recent trend is the use of Textile Reinforced Mortar (TRM) with inorganic mortar matrix strengthened by an open fabric made of fiber rovings, e.g. [17][18][19][20][21][22]. Another retrofitting method is grout and epoxy injection.…”

Volume 2: …and SGAMR Goes!

“…A summary of selected papers from highly ranked, international scientists can be found in (Bedon et al, 2018a). Among the submitted contributors, the covered topics are various and equally important for the science and knowledge development and include an insight on innovative reinforcement techniques for masonry walls (Akhoundi et al, 2018) the design of a multifunctional hybrid steel-glass structure (Froli and Laccone, 2018); the application of diagnostic surveying to existing buildings (Concu et al, 2018) the nonlinear behaviour of RC culverts on elastic soil (Baraldi et al, 2018). The application of infrared thermography approaches for the characterization of painted masonry vaults in historical buildings is proposed by (Casapulla et al, 2018).…”

Special Issue on Current Challenges in Materials Design

“…Example of 15.00 meters tall HYGLASS installed at a roundabout in front of the School of Engineering main building (Pisa), taken from Froli and Laccone (2018) View of the crushing of bricks of the infill after removing some parts of the retrofitting layer, taken fromAkhoundi et al (2018) …”