Effects of water immersion on the bond behavior between CFRP plates and concrete substrate

被引：61

作者：

Pan, Yunfeng ^{[1
,2
]}

Xian, Guijun ^{[1
,2
]}

Silva, Manuel A. G. ^{[3
]}

机构：

[1] Harbin Inst Technol, Key Lab Struct Dynam Behav & Control, Minisby Educ, Harbin 150090, Peoples R China

[2] Harbin Inst Technol, Sch Civil Engn, Harbin 150090, Peoples R China

[3] Univ Nova Lisboa, UNIC, Fac Ciencias & Tecnol, P-2829516 Caparica, Portugal

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2015年 / 101卷

关键词：

Water immersion; Bond; Interfaces; Moisture diffusion; Concrete CFRP; FRACTURE CHARACTERIZATION; MOISTURE DIFFUSION; FRP; INTERFACES; SLIP; COMPOSITES; MODELS; SHEET; RESIN;

D O I：

10.1016/j.conbuildmat.2015.10.129

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Effects of water immersion on the behavior of bond between CFRP plates and concrete substrate were experimentally investigated and analytically modeled. The finite element method was used to simulate the distribution of the moisture content in the interfacial zone. Single lap shear test results showed that water immersion decreases the maximum bond stress, bond capacity, and fracture energy as well as the maximum slip. Increasing the immersion time led to more moisture uptake in the adhesive layers, and more degradation of the bonding properties. The thickness of the adhesive layers (i.e., 0.2 mm and 1 mm) affects the bonding properties and the resistance to the water immersion. The thinner the adhesive layer, the higher moisture content is found at the adhesive/concrete interface. Water immersion altered the debonding mode from cohesive concrete fracture to adhesive separation from the concrete substrate, which was attributed to the weakening of the bonding strength between silica and epoxy adhesive due to moisture ingress. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：326 / 337

页数：12

共 47 条

[1] A study of the use of high functionality-based resin for bonding between CFRP and concrete under harsh environmental conditions
Al-Safy, Rawaa
Al-Mahaidi, Riadh
Simon, George P.
[J]. COMPOSITE STRUCTURES, 2013, 95 : 295 - 306
[2] [Anonymous], D303908 ASTM
[3] [Anonymous], 2002, 440 ACI COMM
[4] [Anonymous], 1998, Journal of Composites for Construction, V3, P138, DOI DOI 10.1061/(ASCE)1090-0268(1998)2:3(138)
[5] ASTM, 2007, STAND TEST METH GLAS
[6] Peel and shear fracture characterization of debonding in FRP plated concrete affected by moisture
Au, C
Büyüköztürk, O
[J]. JOURNAL OF COMPOSITES FOR CONSTRUCTION, 2006, 10 (01) : 35 - 47
[7] Linear and nonlinear analysis of bond-slip models for interfaces between FRP composites and concrete
Biscaia, Hugo C.
Chastre, Carlos
Silva, Manuel A. G.
[J]. COMPOSITES PART B-ENGINEERING, 2013, 45 (01) : 1554 - 1568
[8] Structural solution using molecular dynamics: Fundamentals and a case study of epoxy-silica interface
Bueyuekoeztuerk, Oral
Buehler, Markus J.
Lau, Denvid
Tuakta, Chakrapan
[J]. INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 2011, 48 (14-15) : 2131 - 2140
[9] Progress on understanding debonding problems in reinforced concrete and steel members strengthened using FRP composites
Buyukozturk, O
Gunes, O
Karaca, E
[J]. CONSTRUCTION AND BUILDING MATERIALS, 2004, 18 (01) : 9 - 19
[10] Anchorage strength models for FRP and steel plates bonded to concrete
Chen, JF
Teng, JG
[J]. JOURNAL OF STRUCTURAL ENGINEERING, 2001, 127 (07) : 784 - 791

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