Experimental on bond properties of grooved interface between high-strength steel wire mesh reinforced ECC and concrete

被引：0
作者：
Zhu J. [1 ]
Liu Y. [1 ]
Wang J. [1 ]
Li K. [1 ]
机构：
[1] School of Water Conservancy and Civil Engineering, Zhengzhou University, Zhengzhou
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2023年 / 40卷 / 05期
基金：
中国国家自然科学基金;
关键词：
beam mode test; bearing capacity; bond behavior; ECC; grooved interface; high-strength steel wire mesh;
D O I：
10.13801/j.cnki.fhclxb.20220721.001
中图分类号：
学科分类号：
摘要：
In order to study the effect of grooved interface on the bonding properties of high-strength steel wire mesh reinforced engineered cementitious composites (HSSWM-ECC) and concrete, a total of 36 specimens in 12 sets were designed and fabricated for beam tests, considering the effect of the number of grooves, depth of grooves, steel strand diameter, longitudinal strand ratio and tensile strength of ECC. The results show that the damage patterns include interfacial peeling failure and strand fracture damage. Within the range of the total grooves involved width of 20 mm and the groove depth of 5 mm, the bond behavior between HSSWM-ECC and concrete can be effectively improved by increasing the number or depth of grooves. The longitudinal strand ratio and ECC tensile strength are linearly correlated with the interface bond performance indicators (bond stress and its corresponding slip). Based on the analysis of the bonding mechanism of the grooved interface, a prediction model of the shear bearing capacity considering the groove features (number of grooves, depth of grooves) and the strength characteristics of the HSSWM-ECC layer (longitudinal strand ratio, strand diameter, ECC tensile strength) is established, which is in good agreement with the test results. © 2023 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.
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页码：2913 / 2925
页数：12
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