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Statistical analysis of the bonding properties of the fabric-reinforced cementitious matrix for strengthening masonry structures
Advances in Structural Engineering ( IF 2.6 ) Pub Date : 2021-05-28 , DOI: 10.1177/13694332211017994
Lei Jing 1, 2 , Shiping Yin 1, 3 , Farhad Aslani 2, 4 , Shuang Liu 1
Affiliation  

The fabric-reinforced cementitious matrix (FRCM) has been extensively studied and applied for the strengthening of masonry structures. Special attention needs to be given to the bonding properties between the FRCM and masonry substrate for strengthening applications. This paper presents a statistical analysis of the bonding properties based on the available literature. First, the collected test results were discussed in terms of the interfacial failure mode. Second, the factors influencing the ultimate bond load were analysed based on the different failure modes, and a corresponding prediction formula was further determined via regression analysis for interfacial debonding and slippage failures. Then, the characteristic values of the ultimate bond load were determined via a probabilistic method. Finally, the fracture energy for the slippage failure at the fabric-matrix interface was analysed, and a corresponding prediction formula was obtained via regression analysis. Additionally, some of the collected test results present higher dispersion due to the large variability of the FRCM material properties and the differences in the testing procedures used by different institutions. More studies are needed to improve the reliability of the proposed procedure.



中文翻译:

用于加固砌体结构的织物增强水泥基体粘结性能的统计分析

织物增强水泥基体(FRCM)已被广泛研究并应用于砖石结构的加固。需要特别注意 FRCM 和砖石基材之间的粘合性能,以用于加强应用。本文根据现有文献对粘合性能进行了统计分析。首先,根据界面失效模式讨论了收集的测试结果。其次,基于不同的失效模式分析了影响极限粘结载荷的因素,并通过回归分析进一步确定了相应的界面脱粘和滑移失效预测公式。然后,通过概率方法确定极限粘结载荷的特征值。最后,分析了织物-基体界面滑移破坏的断裂能,并通过回归分析得到了相应的预测公式。此外,由于 FRCM 材料特性的巨大可变性以及不同机构使用的测试程序的差异,一些收集的测试结果呈现出更高的分散性。需要更多的研究来提高所提出程序的可靠性。

更新日期:2021-05-30
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