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%.

中文翻译：

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不同类型砌体填充墙的力学性能表征

值得注意的是，最近的进展涉及数值模型框架的发展，以模拟填充面板的地震行为。但是，缺乏它们的力学性能的实验数据，这对于校准数值模型非常重要。本文的主要目的是介绍由三种不同类型的砌体单元制成的填充砌体墙的力学特性测试的广泛实验活动：轻质垂直空心混凝土砌块和空心粘土砖。进行了四种不同类型的实验测试，即：平行于和垂直于水平床缝的抗压强度测试，对角拉伸强度测试和弯曲强度测试。总共进行了80次测试，并在本文中进行了报告。这项研究的第二个目标是比较竣工和现有填充墙的机械性能。本文介绍和讨论的结果将根据应变-应力曲线和在测试中观察到的破坏进行。观察到用空心粘土水平砖制成的面板的脆性行为，没有裂纹的扩展。灰泥的抗弯强度提高了57％。