Strengthening of fair face masonry columns with steel hooping

Antonio Borri, Giulio Castori, Marco Corradi

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


The innovative technique here illustrated is the result of historical evolution of ancient systems of hooping and is conditioned by design criteria that take into account the structural life in the respect of existing elements. It consists in the application of small diameter stainless steel cords able to provide overlapping hoops at every course over the entire height of the column. Three series of uniaxial compression tests, with a total of 19 specimens, were conducted on model brick masonry columns with these variables: cross-section geometry, amount and scheme of confining reinforcement. Laboratory outcomes have shown how the investigated confining systems are able to provide significant gains in terms of compressive strength (values of the confined-to-unconfined strength ratio ranging between 1.45 and 3.00 have been obtained). Test results have been finally used to assess the reliability of the existing design equations suggested by Italian National Research Council for design of FRP strengthening of masonry columns.

Original languageEnglish
Pages (from-to)2117-2130
Number of pages14
JournalMaterials and Structures/Materiaux et Constructions
Issue number12
Early online date23 Jul 2014
Publication statusPublished - 1 Dec 2014
Externally publishedYes

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