Tensile Capacity of Adhesive Anchors in Damaged Masonry

In Europe, the qualification of injection anchors in masonry under static and quasi-static actions is based on an assessment of tests performed in undamaged masonry. Nevertheless, in seismic prone countries like Italy the influences deriving from earthquake actions cannot be disregarded. Masonry ele...

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Autores principales:	Sara Cattaneo, Navid Vafa
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	pull-out cracked masonry anchors post-installed anchors residual strength tensile strength Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/1fcbfd9d3b24417990c03f509c899e4e
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spelling	oai:doaj.org-article:1fcbfd9d3b24417990c03f509c899e4e2021-11-11T15:11:54ZTensile Capacity of Adhesive Anchors in Damaged Masonry10.3390/app1121101352076-3417https://doaj.org/article/1fcbfd9d3b24417990c03f509c899e4e2021-10-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/21/10135https://doaj.org/toc/2076-3417In Europe, the qualification of injection anchors in masonry under static and quasi-static actions is based on an assessment of tests performed in undamaged masonry. Nevertheless, in seismic prone countries like Italy the influences deriving from earthquake actions cannot be disregarded. Masonry elements are very sensitive to cyclic/seismic action and research on the behavior of anchors in damaged masonry is rather limited. The paper presents the results of an experimental campaign aimed at evaluating the residual tensile strength of adhesive anchors installed into undamaged walls that were subsequently subjected to cyclic in-plane loading to simulate seismic actions before. Consequently, the anchors experienced different stresses depending on their location within the walls. Overall, 29 tests were performed with anchors placed both, in undamaged and damaged areas. The results showed that there is a correlation between residual tensile strength and masonry initial conditions, and therefore the installation of anchors in masonry elements should be carefully planned avoiding areas that could be heavily damaged during seismic events or considering redundant connections in critical areas. In particular, it seems that the width of the crack (created by cyclic actions) that passes nearby/into the anchor borehole is the main parameter that affects the ultimate resistance of the anchors.Sara CattaneoNavid VafaMDPI AGarticlepull-outcracked masonryanchorspost-installed anchorsresidual strengthtensile strengthTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10135, p 10135 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	pull-out cracked masonry anchors post-installed anchors residual strength tensile strength Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	pull-out cracked masonry anchors post-installed anchors residual strength tensile strength Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Sara Cattaneo Navid Vafa Tensile Capacity of Adhesive Anchors in Damaged Masonry
description	In Europe, the qualification of injection anchors in masonry under static and quasi-static actions is based on an assessment of tests performed in undamaged masonry. Nevertheless, in seismic prone countries like Italy the influences deriving from earthquake actions cannot be disregarded. Masonry elements are very sensitive to cyclic/seismic action and research on the behavior of anchors in damaged masonry is rather limited. The paper presents the results of an experimental campaign aimed at evaluating the residual tensile strength of adhesive anchors installed into undamaged walls that were subsequently subjected to cyclic in-plane loading to simulate seismic actions before. Consequently, the anchors experienced different stresses depending on their location within the walls. Overall, 29 tests were performed with anchors placed both, in undamaged and damaged areas. The results showed that there is a correlation between residual tensile strength and masonry initial conditions, and therefore the installation of anchors in masonry elements should be carefully planned avoiding areas that could be heavily damaged during seismic events or considering redundant connections in critical areas. In particular, it seems that the width of the crack (created by cyclic actions) that passes nearby/into the anchor borehole is the main parameter that affects the ultimate resistance of the anchors.
format	article
author	Sara Cattaneo Navid Vafa
author_facet	Sara Cattaneo Navid Vafa
author_sort	Sara Cattaneo
title	Tensile Capacity of Adhesive Anchors in Damaged Masonry
title_short	Tensile Capacity of Adhesive Anchors in Damaged Masonry
title_full	Tensile Capacity of Adhesive Anchors in Damaged Masonry
title_fullStr	Tensile Capacity of Adhesive Anchors in Damaged Masonry
title_full_unstemmed	Tensile Capacity of Adhesive Anchors in Damaged Masonry
title_sort	tensile capacity of adhesive anchors in damaged masonry
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/1fcbfd9d3b24417990c03f509c899e4e
work_keys_str_mv	AT saracattaneo tensilecapacityofadhesiveanchorsindamagedmasonry AT navidvafa tensilecapacityofadhesiveanchorsindamagedmasonry
_version_	1718436729278431232

Tensile Capacity of Adhesive Anchors in Damaged Masonry

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