Experimental study on bond behavior between Basalt/Hybrid FRP sheets and concrete substrates

被引：4

作者：

Shi J. ^{[1
]}

Zhu H. ^{[1
]}

Wu Z. ^{[1
]}

Wu G. ^{[1
]}

机构：

[1] Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, International Institute for Urban Systems Engineering, Southeast University

来源：

Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition) | 2010年 / 40卷 / 03期

关键词：

Basalt fiber; Debonding; DIC(digital image correlation); FRP(fiber reinforced polymer); Hybrid fiber;

D O I：

10.3969/j.issn.1001-0505.2010.03.023

中图分类号：

学科分类号：

摘要：

In order to fully understand the interface behavior of concrete structures externally bonded with basalt FRP (fiber reinforced polymer)/hybrid FRP sheets, an experimental investigation into bond behavior between BFRP/HFRP sheets and concrete substrates is carried out. Double-lap shear specimens are employed and a digital image correlation (DIC) method is applied to capture the full-field strain of FRP sheets. Test results show that the load capacity of the BFRP-concrete interface is lower than that of the CFRP specimen with the same layer fiber sheet. The fracture debonding process of the BFRP specimen shows a characteristic of ductile failure. Compared with the BFRP specimen, the hybrid FRP sheets-concrete interface shows a large enhancement in load capacity. Base on the test results, it is found that there is a dependency between the maximum fracture energy, the maximum shear stress and the stiffness of FRP. A verification of the validity of the DIC results of the FRP-concrete interface tests is effected using strain gauge data.

引用

页码：554 / 558

页数：4

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