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Bond strength performances of anchor pins for earthen buildings. A comparison between earth block masonry, rammed earth and cob

  • Connections improvement plays a key role in seismic upgrade of historical buildings. Their global response is related to the behavior of the single structural elements as well as to their mutual connections. Up to now only few data are available about the performance of grouted anchor pins in earthen materials where the critical point is the bond between the grout and the earthen substrate. In this paper, results of the experimental testing performed on earth block masonry, rammed earth and cob are presented. Pull-out tests were carried out to investigate the bond strength and failure modes of stainless steel rods with a lime based hydraulic grout and their compatibility with earthen materials. Rods with nuts were investigated to improve the pull-out capacity of the anchors. They showed higher pull-out capacity than rods without nuts. The performances of rods with nuts in cob were influenced by the rough surface at/of the earthen substrate. It is assumed that the non homogeneousConnections improvement plays a key role in seismic upgrade of historical buildings. Their global response is related to the behavior of the single structural elements as well as to their mutual connections. Up to now only few data are available about the performance of grouted anchor pins in earthen materials where the critical point is the bond between the grout and the earthen substrate. In this paper, results of the experimental testing performed on earth block masonry, rammed earth and cob are presented. Pull-out tests were carried out to investigate the bond strength and failure modes of stainless steel rods with a lime based hydraulic grout and their compatibility with earthen materials. Rods with nuts were investigated to improve the pull-out capacity of the anchors. They showed higher pull-out capacity than rods without nuts. The performances of rods with nuts in cob were influenced by the rough surface at/of the earthen substrate. It is assumed that the non homogeneous surface caused an interlocking mechanism, which allowed to reach a pull-out capacity of about 54% higher than in earth block masonry.zeige mehrzeige weniger

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Metadaten
Autor*innen:Lorenzo Miccoli, Patrick Fontana
Persönliche Herausgeber*innen:F. Pena, M. Chávez
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Graue Literatur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):SAHC 2014 - 9th International conference on structural analysis of historical constructions (Proceedings)
Jahr der Erstveröffentlichung:2014
Erste Seite:Paper-ID 07/011, 1-13
Freie Schlagwörter:Anchor pins; Earthen materials; Lime based hydraulic gout; Pull-out tests
Veranstaltung:SAHC 2014 - 9th International conference on structural analysis of historical constructions
Veranstaltungsort:Mexiko City, Mexico
Beginndatum der Veranstaltung:14.10.2014
Enddatum der Veranstaltung:17.10.2014
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:20.02.2016
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:12.02.2015
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