Mechanical performance of concrete strengthened by modified epoxy resin bonded CFRP

被引：10

作者：

Li, Bowen ^{[1
]}

Hu, Ruixue ^{[2
]}

Bai, Song ^{[1
]}

Dong, Wanguo ^{[3
]}

Zhao, Zhanliang ^{[1
]}

Song, Lijun ^{[1
]}

机构：

[1] NORENDAR Int Ltd, Hebei Electromagnet Environm Technol Innovat Ctr, Shijiazhuang, Hebei, Peoples R China

[2] Hebei Jiaotong Vocat & Tech Coll, Dept Automobile Engn, Shijiazhuang 050035, Hebei, Peoples R China

[3] Anhui Univ Technol, Sch Management Sci & Engn, Maanshan, Peoples R China

来源：

JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY | 2022年 / 36卷 / 16期

基金：

中国国家自然科学基金;

关键词：

Modified epoxy resin; CFRP; strengthening effect; interface bonding strength; flexural strength; FRP-CONFINED CONCRETE; STRESS-STRAIN MODEL; RC BEAMS; REINFORCED-CONCRETE; PLAIN CONCRETE; BEHAVIOR; SHEAR; INTERFACE; COMPOSITE; DURABILITY;

D O I：

10.1080/01694243.2021.1984086

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Mechanical performance of concrete strengthened by modified epoxy resin bonded CFRP (carbon fiber reinforced polymer) is present in this paper, with particular focus on the interface bond strength and flexural strength. A type of modified epoxy resin adhesive which bonds CFRP sheets to strengthen plain concrete was developed. The interface bond strength between CFRP and concrete and the flexural strength of CFRP reinforced concrete were comprehensively tested. The influence of the CFRP size, number of CFRP bonding layers, and concrete strength was further analyzed. The results showed that CFRP significantly improved the maximum bearing capacity, displacement and failure energy of plain concrete. The bearing capacity of plain concrete improved almost linearly with an increasing number of CFRP layers. CFRP-reinforced low-density concrete has a better strengthening effect than high-density concrete. The final strength and failure energy of the CFRP-reinforced concrete increased significantly, compared to that of plain concrete. A model for calculating the maximum flexural strength of reinforced concrete structures is proposed.

引用

页码：1764 / 1780

页数：17

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