A study on the bond strength of interface between post-fire concrete and different epoxy resin adhesives

被引：6

作者：

Guo, Xiao ^{[1
,2
,3
]}

Xie, Kaizhong ^{[1
,2
,3
]}

Liu, Zhenwei ^{[1
]}

Elchalakani, Mohamed ^{[4
]}

Zhou, Yiming ^{[1
,4
]}

机构：

[1] Guangxi Univ, Coll Civil Engn & Architecture, Nanning 530004, Peoples R China

[2] Guangxi Univ, State Key Lab Featured Met Mat & Life Cycle Safety, Nanning 530004, Peoples R China

[3] Guangxi Univ, Key Lab Disaster Prevent & Struct Safety, Minist Educ, Nanning 530004, Peoples R China

[4] Univ Western Australia, Sch Engn, Dept Civil Environm & Min Engn, 35 Stirling Hwy, Crawley, WA 6009, Australia

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2023年 / 407卷

基金：

中国国家自然科学基金;

关键词：

Concrete-resin interface; Epoxy resin adhesive; Reinforcement after high temperature; Bonding-dissociation constitutive relation; Bonding performance;

D O I：

10.1016/j.conbuildmat.2023.133429

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In order to investigate the influences of temperature that concrete has undergone on the resin/concrete interface bonding performance for different epoxy resin adhesives, 40 tensile specimens and 24 three-point bending specimens were heated to 200, 300, and 600 degrees C, respectively. After natural cooling, resin was injected to form tensile specimens and sandwich specimens, which were subjected to pull-out tests and three-point bending tests, respectively. The interface bond-separation constitutive relationship was obtained to study the influence of fire temperature and different epoxy resin adhesives on the properties of the resin/concrete interface bonding. The results showed that the reinforcement of high-temperature concrete with different permeable epoxy resin adhesives caused the crack initiation load, interface strength, and fracture energy of the concrete/resin interface to increase slightly and then decrease sharply as the temperature of the concrete in the fire increased. When the fire temperature was 200 degrees C, the peak value of the bonding performance of high-temperature concrete/resin interface was higher than that at room temperature.

引用

页数：12

共 22 条

[1] Improved model for plate-end shear of CFRP strengthened RC beams [J].

Ahmed, O ;

Van Gemert, D ;

Vandewalle, L .

CEMENT & CONCRETE COMPOSITES, 2001, 23 (01) :3-19

[2] Anchorage and tension-stiffening effect between near-surface-mounted CFRP rods and concrete [J].

Al-Mahmoud, Firas ;

Castel, Arnaud ;

Francois, Raoul ;

Tourneur, Christian .

CEMENT & CONCRETE COMPOSITES, 2011, 33 (02) :346-352

[3] Behavior of FRP-confined concrete after high temperature exposure [J].

Al-Salloum, Yousef A. ;

Elsanadedy, Hussein M. ;

Abadel, Aref A. .

CONSTRUCTION AND BUILDING MATERIALS, 2011, 25 (02) :838-850

[4]

[Anonymous], 2008, C. Standard, Test methods for properties of resin casting body

[5] Experimental characterization of concrete-epoxy interfaces [J].

Coronado, Carlos A. ;

Lopez, Maria M. .

JOURNAL OF MATERIALS IN CIVIL ENGINEERING, 2008, 20 (04) :303-312

[6]

Delaney J., 2007, 8th International Symposium on fiber reinforced polymers for concrete structures (FRPRCS-8), P3

[7]

Fletcher I., 2006, PERFORMANCE CONCRETE

[8] Bridge fires in the 21st century: A literature review [J].

Hu, Jiayu ;

Carvel, Ricky ;

Usmani, Asif .

FIRE SAFETY JOURNAL, 2021, 126

[9] Rheological characteristics of epoxy asphalt binders and engineering properties of epoxy asphalt mixtures - state-of-the-art [J].

Jamshidi, Ali ;

White, Greg ;

Kurumisawa, Kiyofumi .

ROAD MATERIALS AND PAVEMENT DESIGN, 2022, 23 (09) :1957-1980

[10] Experimental investigation of mode-I fracture toughness of real-cracked concrete repaired by epoxy [J].

Kan, Yu-Cheng ;

Lee, Ming-Gin ;

Lee, Hung-Wei .

CONSTRUCTION AND BUILDING MATERIALS, 2021, 293

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