Experimental study for the adhesive interface mechanical properties of double lapped steel-CFRP plate at high temperature

CHEN Zhuoyi; PENG Yanze; LI Chuanxi; GUO Jing

doi:10.13801/j.cnki.fhclxb.20200608.002

Volume 38 Issue 2

Feb. 2021

Turn off MathJax

Article Contents

Article Navigation > Acta Materiae Compositae Sinica > 2021 > 38(2): 449-460

CHEN Zhuoyi, PENG Yanze, LI Chuanxi, et al. Experimental study for the adhesive interface mechanical properties of double lapped steel-CFRP plate at high temperature[J]. Acta Materiae Compositae Sinica, 2021, 38(2): 449-460. doi: 10.13801/j.cnki.fhclxb.20200608.002

Citation:

CHEN Zhuoyi, PENG Yanze, LI Chuanxi, et al. Experimental study for the adhesive interface mechanical properties of double lapped steel-CFRP plate at high temperature[J]. Acta Materiae Compositae Sinica, 2021, 38(2): 449-460. doi: 10.13801/j.cnki.fhclxb.20200608.002

Citation:

PDF( 1266 KB)

Experimental study for the adhesive interface mechanical properties of double lapped steel-CFRP plate at high temperature

doi: 10.13801/j.cnki.fhclxb.20200608.002

Key Laboratory of Bridge Engineering Safety Control by Department of Education, Changsha University of Science & Technology, Changsha 410114, China

Received Date: 2020-04-16
Accepted Date: 2020-05-22

Available Online: 2020-06-09

Publish Date: 2021-02-15

Abstract

Abstract

The bond interface between steel and carbon fiber reinforced polymer (CFRP) plate is the weak part of steel structure strengthened by CFRP at high temperature. In order to explore the influence of temperature on the adhesive mechanics of steel to CFRP joints, some double lapped joint specimens were manufactured, and static tensile tests were conducted with three types of adhesives under four kinds of temperatures, which include 25℃, 55℃, 70℃ and 90℃. Thereafter, the failure modes, the load-displacement relationships, the strain distribution of CFRP plates and the bond-slip relationship of specimens were explored respectively. The results show that the failure modes of specimens are more related to the type of adhesive, when the temperature is lower than 55℃; but the failure modes of different adhesives are similar, and all the CFRP plates occur fracture when the temperature is higher than 70℃. The influence of temperature on the capacity of bond specimens is different, which depends on the type of epoxy resin adhesive. The capacities of HJY-4105 high toughness epoxy structural adhesive (HJY adhesive) specimens increase with the temperature increasing, and the capacities of LICA-100A/B epoxy structural adhesive (LICA adhesive) specimens are instability under different temperatures, and Sikadur-30 CN two-component epoxy structure reinforced carbon plate adhesive (SIKA30 adhesive) specimens have the highest capacity at 55℃. The shear strength of adhesive layer, the peak shear stress of interface and the shear stiffness decrease as the temperature increasing, but the ultimate tensile strength has no concern with the peak shear stress. Temperature has a significant effect on the bond-slip relationship, the ductility of the bond-slip constitutive of HJY adhesive increases with the increase of temperature, and the failure mode changes from brittle failure to ductile failure. The research shows that the reasonable high temperature resistant adhesive applied to steel structure reinforcement can adapt to the adverse effects of the natural high temperature environment.
- CFRP strengthening,
- reinforced steel structure,
- interface mechanics,
- adhesive layer,
- double lap specimen
Long Abstrsct
Innovation Points

FullText(HTML)

References(24)

References

[1]	GHOLAMI M, SAM A R M, YATIM J M, et al. A review on steel/CFRP strengthening systems focusing environmental performance[J]. Construction and Building Materials,2013,47:301-310. doi: 10.1016/j.conbuildmat.2013.04.049
[2]	王作虎, 刘杜, 袁非凡, 等. CFRP复合材料加固钢筋混凝土柱偏心受压性能尺寸效应的试验[J]. 复合材料学报, 2019(5):1275-1283. WANG Z H, LIU D, YUAN F F, et al. Experimental study on size effect of reinforced concrete columns strengthened with CFRP composite under eccentric loads[J]. Acta Materiae Compositae Sinica,2019(5):1275-1283(in Chinese).
[3]	邓江东, 宗周红, 黄培彦. FRP-混凝土界面疲劳性能分析[J]. 复合材料学报, 2010(1):155-161. DENG J D, ZONG Z H, HUANG P Y. Analysis of FRP-concrete interfacial fatigue properties[J]. Acta Matriae Compositae Sinica,2010(1):155-161(in Chinese).
[4]	李传习, 李游, 陈卓异, 等. 钢箱梁横隔板疲劳开裂原因及补强细节研究[J]. 中国公路学报, 2017(3):121-131. doi: 10.3969/j.issn.1001-7372.2017.03.013 LI C X, LI Y, CHEN Z Y. Fatigue cracking reason and detail dimension of reinforcement about transverse diaphragm of steel box girder[J]. China Journal of Highway and Transport,2017(3):121-131(in Chinese). doi: 10.3969/j.issn.1001-7372.2017.03.013
[5]	陈卓异, 李传习, 柯璐, 等. 某悬索桥钢箱梁疲劳病害及处治方法研究[J]. 土木工程学报, 2017(3):11-20. CHEN Z Y, LI C X, KE L, et al. Study on fatigue damages and retrofit methods of steel box girder in a suspension bridge[J]. Journal of Civil Engineering,2017(3):11-20(in Chinese).
[6]	ZHAO X L, ZHANG L. State-of-the-art review on FRP strengthened steel structures[J]. Engineering Structures,2007,29(8):1808-1823. doi: 10.1016/j.engstruct.2006.10.006
[7]	TENG J G, YU T, FERNANDO D. Strengthening of steel structures with fiber-reinforced polymer composites[J]. Journal of Constructional Steel Research,2012,78:131-143.
[8]	BELARBI A, ACUN B. FRP systems in shear strengthening of reinforced concrete structures[J]. Procedia Engineering,2013,57:2-8. doi: 10.1016/j.proeng.2013.04.004
[9]	DE W L, FERNANDO D, NGUYEN V T, et al. FRP strengthening of 60 years old pre-stressed concrete bridge deck units[J]. Engineering Structures,2017,143:346-357. doi: 10.1016/j.engstruct.2017.03.062
[10]	HAGHANI R. Analysis of adhesive joints used to bond FRP laminates to steel members—A numerical and experimental study[J]. Construction and Building Materials,2010,24(11):2243-2251. doi: 10.1016/j.conbuildmat.2010.04.032
[11]	HE J, XIAN G. Debonding of CFRP-to-steel joints with CFRP delamination[J]. Composite Structures,2016,153:12-20. doi: 10.1016/j.compstruct.2016.05.100
[12]	XIA S H, TENG J G. Behaviour of FRP-to-steel bonded joints[C]//International Institute for FRP in Construction (IIFC). Hong Kong, 2005: 411-418.
[13]	李传习, 曹先慧, 柯璐, 等. 高温对结构加固用环氧黏结剂力学性能的影响[J]. 建筑材料学报, 2020, 23(3): 642-649. LI C X, CAO X H, KE L, et al. Effects of high temperatures on the mechanical properties of epoxy adhesives for structural strengthening[J]. Journal of Building Materials, 2020, 23(3): 642-649(in Chinese).
[14]	张玉平, 杨宁, 李传习. 无铺装层钢箱梁日照温度场分析[J]. 工程力学, 2011(6):156-162. ZHANG Y P, YANG N, LI C X. Research on temperature field of steel box girder without pavement caused by the solar radiations[J]. Engineering Mechanics,2011(6):156-162(in Chinese).
[15]	李传习, 柯璐, 陈卓异, 等. CFRP-钢界面粘结性能试验与数值模拟[J]. 复合材料学报, 2018, 35(12):3534-3547. LI C X, KE L, CHEN Z Y, et al. Experimental study and numerical simulation for bond behavior of interface between CFRP and steel[J]. Acta Materiae Compositae Silica,2018,35(12):3534-3547(in Chinese).
[16]	YU T, FERNANDO D, TENG J G, et al. Experimental study on CFRP-to-steel bonded interfaces[J]. Composites Part B: Engineering,2012,43(5):2279-2289. doi: 10.1016/j.compositesb.2012.01.024
[17]	WU C, ZHAO X L, DUAN W H. Bond characteristics between ultra high modulus CFRP laminates and steel[J]. Thin-Walled Structures,2012,51:147-157. doi: 10.1016/j.tws.2011.10.010
[18]	李传习, 李游, 高有为, 等. 纳米SiO₂掺量对胶粘CFRP板-钢搭接界面黏结性能的影响[J]. 复合材料学报, 2020, 37(10): 2619-2635. LI C X, LI Y, GAO Y W, et al. Effect of nano-SiO₂ content on the interface performance of glued CFRP-steel specimen[J]. Acta Materiae Compositae Silica, 2020, 37(10): 2619-2635(in Chinese).
[19]	NARMASHIRI K, RAMLI N H, JUMAAT M Z. Failure analysis and structural behaviour of CFRP strengthened steel I-Beams[J]. Construction and Building Materials,2012(30):1-9.
[20]	朱德举, 姚明侠, 张怀安, 等. 动态拉伸荷载下温度对CFRP/钢板单搭接剪切接头力学性能的影响[J]. 土木工程学报, 2016(8):28-35. ZHU D J, YAO M X, ZHANG H A, et al. Temperature effect on the mechanical properties of CFRP/steel single-lap shear joints under dynamic tensile loading[J]. Journal of Civil Engineering,2016(8):28-35(in Chinese).
[21]	AL-SHAWAF A. Effect of elevated temperature on bond behaviour of high modulus CFRP/steel double-strap joints[J]. Australian Journal of Structural Engineering,2009,10(1):63-74. doi: 10.1080/13287982.2009.11465033
[22]	AL-MOSAWE A, Al-MAHAIDI R, ZHAO X L. Effect of CFRP properties, on the bond characteristics between steel and CFRP laminate under quasi-static loading[J]. Construction and Building Materials,2015,98:489-501. doi: 10.1016/j.conbuildmat.2015.08.130
[23]	FERNANDO D, YU T, TENG J G. Behavior of CFRP laminates bonded to a steel substrate using a ductile adhesive[J]. Journal of Composites for Construction,2014,18(2):1-20.
[24]	李传习, 罗南海, 柯璐. 胶膜连接CFRP板-钢搭接接头室温条件的力学性能试验[J]. 复合材料学报, 2020, 37(2): 318-327. LI C X, LUO N H, KE L, et al. Experimental study on the CFRP laminate-steel lap joints connected with a film adhesive at room temperature[J]. Acta Materiae Compositae Silica, 2020, 37(2): 318-327(in Chinese).