Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/45130

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Title
Flexural bond strength for masonry walls: an experimental and statistical analysis
Author/Creator
Correa, Marcio R. S.;  Heffler, Leesa M.;  Masia, Mark J.;  Stewart, Mark G.
Institution
The University of Newcastle. Faculty of Engineering & Built Environment, School of Engineering
Description
The flexural bond strength (FBS) of individual units (brick+adjoining underlying mortar bed) varies considerably between units, and might significantly affect the structural performance and reliability of unreinforced masonry (URM) walls in flexure. This paper describes an experimental program where full sized clay brick URM walls were constructed by masons with different levels of skills. The timing and placement of different batches of mortar were closely monitored. The FBS of each unit in each wall was obtained using the bond wrench test. This provided extensive data for a statistical analysis to assess the degree of correlation of unit flexural bond strengths between units within and between courses. The statistical analysis also included a comparison between the flexural strengths of units and prisms that were built for every new batch when building the walls. The prisms' characteristic FBS were assessed following the Australian Code AS3700, and compared to the characteristic values taken from the walls' units. The study recommended that FBS between units either within or between courses are statistically independent. Finally the paper showed that the differences between walls and prisms strengths may be relevant, highlighting the need of a more detailed study to analyse the meaningfulness the prisms' results.
Relation
8th International Seminar on Structural Masonry. 8th International Seminar on Structural Masonry: Proceedings (Istanbul, Turkey 5-7 November, 2008) p. 97-105
Date
2008
Publisher
Cizgi Basim Yayin Ltd.
Keyword(s)
flexural bond strength;  statistics;  correlation;  prisms
Resource Type
conference paper
Identifier
http://hdl.handle.net/1959.13/45130
Identifier
ISBN:9789755613420
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"Flexural bond strength for masonry walls: an experimental and statistical analysis"
 
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