Textile-reinforced mortar (TRM) versus fiber-reinforced polymers (FRP) in shear strengthening of concrete beams
Textile-reinforced mortar (TRM) versus fiber-reinforced polymers (FRP) in shear strengthening of concrete beams
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DOI：
10.1016/j.compositesb.2015.03.055
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发表时间：
2015-08
影响因子：
13.1
通讯作者：
Z. Tetta;L. Koutas;D. Bournas
中科院分区：
文献类型：
--
作者：
Z. Tetta;L. Koutas;D. Bournas
本文介绍了先进复合材料对钢筋混凝土矩形梁抗剪加固的试验研究。本研究的关键参数包括：（a）加固系统，即织物增强砂浆（TRM）护套和纤维增强聚合物（FRP）护套，（B）加固配置，即侧粘结，U形包裹和全包裹，和（c）加固层数。总共有14个钢筋混凝土梁的弯曲荷载下建造和测试。其中一根梁没有得到任何加固，作为控制梁，八根梁得到TRM护套，而其余五根梁得到FRP护套。结果表明，TRM在提高混凝土抗剪承载力方面不如FRP有效，但其有效性取决于加固配置和层数。在TRM护套的情况下，U形缠绕加强配置比侧粘合有效得多，并且TRM护套的有效性随着层数的增加而显著增加。
This paper presents an experimental study on shear strengthening of rectangular reinforced concrete (RC) beams with advanced composite materials. Key parameters of this study include: (a) the strengthening system, namely textile-reinforced mortar (TRM) jacketing and fiber-reinforced polymer (FRP) jacketing, (b) the strengthening configuration, namely side-bonding, U-wrapping and full-wrapping, and (c) the number of the strengthening layers. In total, 14 RC beams were constructed and tested under bending loading. One of the beams did not receive any strengthening and served as control beam, eight received TRM jacketing, whereas the rest five received FRP jacketing. It is concluded that the TRM is generally less effective than FRP in increasing the shear capacity of concrete, however the effectiveness depends on both the strengthening configuration and the number of layers. U-wrapping strengthening configuration is much more effective than side-bonding in case of TRM jackets and the effectiveness of TRM jackets increases considerably with increasing the number of layers.