CFRP strips for enhancing flexural performance of RC beams by SNSM strengthening technique

被引：65

作者：

Hosen, Md. Akter ^{[1
,2
]}

Jumaat, Mohd Zamin ^{[1
]}

Alengaram, U. Johnson ^{[1
]}

Sulong, N. H. Ramli ^{[1
]}

机构：

[1] Univ Malaya, Fac Engn, Dept Civil Engn, Kuala Lumpur 50603, Malaysia

[2] Dhaka Univ Engn & Technol, Dept Civil Engn, Gazipur, Bangladesh

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2018年 / 165卷

关键词：

CFRP strips; SNSM; Flexural performance; Ductility; Stiffness; Energy absorption capacity; FIBER-REINFORCED POLYMER; CONCRETE; BEHAVIOR; STEEL; EFFICIENCY;

D O I：

10.1016/j.conbuildmat.2017.12.052

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Side Near Surface Mounted (SNSM) strengthening technique is among the latest technique introduced recently. In this paper, SNSM carbon fiber reinforced polymer (CFRP) strips strengthening technique is proposed for enhancing the flexural performance of reinforced concrete (RC) beams. A total of seven RC beam specimens were tested: one un-strengthened control specimen, and six specimens strengthened by SNSM-CFRP strips. All beam specimens were tested under four-point bending. Analytical prediction methods were used to verify the experimental results. The load, mid-span, deflection, and strains data were recorded until failure of the specimens. The ductility, stiffness, and energy absorption capacity of the strengthened specimens by CFRP strips were enhanced due to SNSM technique. The results also showed that the SNSM-CFRP strips strengthening technique significantly enhanced the first cracking, yield, and ultimate load capacities up to 153%, 108%, and 147% respectively, compared with that of the control beam. Further, the comparison between the experimental and predicted values shows good agreement. (C) 2017 Published by Elsevier Ltd.

引用

页码：28 / 44

页数：17

共 39 条

[1]

Adelzadeh M., 2013, Structural and Thermal Behaviour of Insulated FRP-Strengthened Reinforced Concrete Beams and Slabs in Fire

[2] Performance of RC beams rehabilitated with NSM CFRP strips using innovative high-strength self-compacting cementitious adhesive (IHSSC-CA) made with graphene oxide [J].