Statistical analysis of the bonding properties of the fabric-reinforced cementitious matrix for strengthening masonry structures
Advances in Structural Engineering
School of Engineering
China University of Mining and Technology Postgraduate Research & Practice Innovation Program of Jiangsu Province the Six Talent Peaks Project in Jiangsu Province
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.
Jing, L., Yin, S., Aslani, F., & Liu, S. (2021). Statistical analysis of the bonding properties of the fabric-reinforced cementitious matrix for strengthening masonry structures. Advances in Structural Engineering, 24(13), 3057-3069. https://doi.org/10.1177/13694332211017994