Title:
Design Formulas for FRCM Strengthened Masonry Elements Under Compression or Shear Load
Author(s):
Maria Antonietta Aiello and Alessio Cascardi
Publication:
Symposium Paper
Volume:
345
Issue:
Appears on pages(s):
143-155
Keywords:
FRCM, confinement, shear, masonry, durability.
DOI:
10.14359/51731577
Date:
2/1/2021
Abstract:
The increasing interest in the field of conservation of existing masonry structures pushed to the development
of new retrofitting technologies in the recent past. One of the most promising is the use of Fabric Reinforced
Cementitious Mortar (FRCM), which consists of an open-grid within an inorganic matrix. The effectiveness of the
FRCM-application is well-demonstrated in literature by several experimental investigations regarding different
structural members, including columns and shear wall. The success of FRCMs is manly related to durability aspects,
since the grid is generally non-metallic, the compatibility of the inorganic matrix with the substrates, the easy
application, the low weight and spatial impact, the possible installation in damp areas and at high temperatures. The
interaction between the substrate, the mortar-based matrix and the open-grid make challenging the theoretical
prediction of the mechanical behavior of the FRCM-retrofitted structures. For this reason, the analytical formulations
for the proper design of FRCM-strengthening are still an open research problem, referring to both short and long term
conditions. The present paper reports and discusses design-oriented relationships for FRCM-confinement and in-plane
FRCM-strengthening of masonry elements; the proposals are intended to satisfy the requirements of simplicity and
accuracy needed for code-finality.