Corradi Marco, Castori Giulio, Sisti Romina, Borri Antonio, Pesce Giovanni Luca
Department of Engineering, University of Perugia, 6156 Perugia, Italy.
Department of Architecture and Built Environment, University of Northumbria, Newcastle Upon Tyne NE1 8ST, UK.
Materials (Basel). 2019 Jul 25;12(15):2363. doi: 10.3390/ma12152363.
In the 1980s, block masonry started to be widely used for new constructions in Italy's earthquake prone areas. However, recent seismic events demonstrated that block masonry buildings may need to be repaired after earthquakes due to cracking. Construction defects are the main cause for cracking of block work masonry. Carbon fiber reinforced polymer (CFRP) sheets have been used as a local repair method for non-defective and defective wall panels. An experimental program was formulated to investigate the shear behavior of block masonry walls repaired with CFRP sheets. A total of six wall panels were constructed in the laboratory and tested in shear (in-plane lateral loading). It was found that, although the control (non-defective) wall panels had a high ultimate load capacity, the use of CFRPs reduces the effects of construction defects and restores the lateral load capacity in non-defective walls. Overall, this research suggests that the use of epoxy-bonded CFRP sheets could be used for local repair of cracked wall panels.
20世纪80年代，砌块砌体开始在意大利地震多发地区的新建建筑中广泛使用。然而，最近的地震事件表明，砌块砌体建筑在地震后可能因开裂而需要修复。施工缺陷是砌块砌体开裂的主要原因。碳纤维增强聚合物（CFRP）板已被用作无缺陷和有缺陷墙板的局部修复方法。制定了一个试验计划来研究用CFRP板修复的砌块砌体墙的抗剪性能。在实验室共建造了六块墙板并进行了抗剪（平面内横向加载）试验。结果发现，尽管对照（无缺陷）墙板具有较高的极限承载能力，但使用CFRP可减少施工缺陷的影响，并恢复无缺陷墙体的横向承载能力。总体而言，本研究表明，使用环氧粘结CFRP板可用于开裂墙板的局部修复。
