NDLI: Bond Tests on Clay Bricks and Natural Stone Masonry Externally Bonded with FRP

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Bond Tests on Clay Bricks and Natural Stone Masonry Externally Bonded with FRP

Content Provider	MDPI
Author	Leone, Marianovella Aiello, Maria Antonietta
Copyright Year	2021
Description	Nowadays, the solution of durability problems of existing buildings has a key role in civil engineering, in which there is an ever-increasing need for building restorations. Over the past 50 years, there is a growing interest in a new composite material, fibre-reinforced polymer (FRP), suitable for increasing the resistance and the stability of existing buildings and, consequently, for extending their service life. In this context, the effectiveness of the strengthening system is related to the bond behaviour that is influenced by several parameters such as bond length, the stiffness of the reinforcement, the mechanical properties of the substrate, environmental conditions, etc. This paper aims to analyse the main experimental results from shear tests performed on two kinds of masonry substrates and different types of FRP reinforcements. The purpose is to highlight the role played by many parameters to the bond behaviour of these systems: the mechanical properties of substrates; the stiffness of reinforcements; the type of supports (i.e., unit or masonry unit). The obtained experimental results underlined that the specimens realised with masonry unit show an increase in debonding load and different stress transfer mechanisms along the bonded length with respect to the specimens with a unit substrate. The analysis of the data revealed that the presence of mortar joints cannot be neglected because it influences the interface global performance.
Starting Page	7439
e-ISSN	19961944
DOI	10.3390/ma14237439
Journal	Materials
Issue Number	23
Volume Number	14
Language	English
Publisher	MDPI
Publisher Date	2021-12-04
Access Restriction	Open
Subject Keyword	Materials Civil Engineering Masonry Frp Bond Lecce Stone Clay Brick Mortar Joint Effective Bond Length
Content Type	Text
Resource Type	Article

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