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Frontiers of Structural and Civil Engineering >> 2020, Volume 14, Issue 2 doi: 10.1007/s11709-019-0602-y

Mechanical properties characterization of different types of masonry infill walls

. CONSTRUCT-LESE, Department of Civil Engineering, Faculty of Engineering, University of Porto, Porto 4200-465, Portugal.. RISCO, School of Technology and Management, Polytechnic Institute of Leiria, Leiria 2411-901, Portugal

Accepted: 2020-03-31 Available online: 2020-03-31

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It is remarkable, the recent advances concerning the development of numerical modeling frameworks to simulate the infill panels’ seismic behavior. However, there is a lack of experimental data of their mechanical properties, which are of full importance to calibrate the numerical models. The primary objective of this paper is to present an extensive experimental campaign of mechanical characterization tests of infill masonry walls made with three different types of masonry units: lightweight vertical hollow concrete blocks and hollow clay bricks. Four different types of experimental tests were carried out, namely: compression strength tests, diagonal tensile strength tests, and flexural strength tests parallel and perpendicular to the horizontal bed joints. A total amount of 80 tests were carried out and are reported in the present paper. The second objective of this study was to compare the mechanical properties of as-built and existing infill walls. The results presented and discussed herein, will be in terms of strain-stress curves and damages observed within the tests. It was observed a fragile behavior in the panels made with hollow clay horizontal bricks, without propagation of cracks. The plaster increased the flexural strength by 57%.

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