Performance of heat-damaged partially-insulated RC beams strengthened with NSM CFRP strips and epoxy adhesive

被引：22
作者：
Jadooe, Awad [1 ,2 ]
Al-Mahaidi, Riadh [1 ]
Abdouka, Kamiran [1 ]
机构：
[1] Swinburne Univ Technol, Fac Sci Engn & Technol, Hawthorn, Vic 3122, Australia
[2] Univ Kerbala, Civil Engn Dept, Kerbala, Iraq
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2018年 / 159卷
关键词：
High temperature; NSM; CFRP; Rehabilitation; Epoxy adhesive; Insulation; FEM; REINFORCED-CONCRETE BEAMS; NONLINEAR FINITE-ELEMENT; BOND; REPAIR; FAILURE;
D O I：
10.1016/j.conbuildmat.2017.11.020
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This paper describes an experimental and numerical study of the behaviour of RC beams damaged by heating and subsequently strengthened using NSM CFRP laminates. In the experiments, two beams were normal temperature controls, and the other beams were heated under the ISO-834 standard fire curve. The flexural behaviour was studied after exposure to 700 degrees C and 800 degrees C with and without insulation on the top surface of the concrete. The parameters studied in this investigation were unheated and heat-damaged beams, level of heat exposure and use of insulation. Three beams were un-strengthened fire-damaged control beams and the other beams were strengthened with CFRP laminates after being heated. Although the ultimate load and stiffness decreased, repair with NSM CFRP laminates using epoxy adhesive was found to increase the load capacity and stiffness of the beams. Finite element models (FEMs) were able to predict the experimental behaviour reasonably well. Crown Copyright 2017 Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：617 / 634
页数：18
相关论文
共 53 条
  • [41] Kodur V.K. R., 1998, Fire resistance of FRP reinforced concrete slabs
  • [42] Laura De Lorenzis., 2000, International Meeting on Composite Materials, P9
  • [43] Fire-damaged R/C Members Repair With High-Performance Fibre-Reinforced Jacket
    Leonardi, A.
    Meda, A.
    Rinaldi, Z.
    [J]. STRAIN, 2011, 47 : 28 - 35
  • [44] Brittle failure and bond development length of CFRP-concrete beams
    Nguyen, DM
    Chan, TK
    Cheong, HK
    [J]. JOURNAL OF COMPOSITES FOR CONSTRUCTION, 2001, 5 (01) : 12 - 17
  • [45] Experimental study of bond of NSM-FRP reinforcement
    Novidis, D.
    Pantazopoulou, S. J.
    Tentolouris, E.
    [J]. CONSTRUCTION AND BUILDING MATERIALS, 2007, 21 (08) : 1760 - 1770
  • [46] Pantuso A., 2000, MIN 4 C FIBR CRET M, P20
  • [47] Bond strength of near-surface mounted FRP strip-to-concrete joints
    Seracino, Rudolf
    Jones, Nicola M.
    Ali, M. S. M.
    Page, Mark W.
    Oehlers, Deric J.
    [J]. JOURNAL OF COMPOSITES FOR CONSTRUCTION, 2007, 11 (04) : 401 - 409
  • [48] Flexural response of reinforced concrete (RC) beams strengthened with near surface mounted (NSM) fibre reinforced polymer (FRP) bars
    Sharaky, I. A.
    Torres, L.
    Comas, J.
    Barris, C.
    [J]. COMPOSITE STRUCTURES, 2014, 109 : 8 - 22
  • [49] Flexural strengthening of reinforced lightweight polystyrene aggregate concrete beams with near-surface mounted GFRP bars
    Tang, W. C.
    Balendran, R. V.
    Nadeem, A.
    Leung, H. Y.
    [J]. BUILDING AND ENVIRONMENT, 2006, 41 (10) : 1381 - 1393
  • [50] Durability characteristics of concrete columns wrapped with FRP tow sheets
    Toutanji, H
    Balaguru, P
    [J]. JOURNAL OF MATERIALS IN CIVIL ENGINEERING, 1998, 10 (01) : 52 - 57
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