硫酸盐环境下CFRP加固顺序对混凝土梁界面黏结性能影响

头部文案

发布时间：2020-01-06 00:00:00

全国建材科技期刊
全国中文核心期刊
中国科技论文统计源期刊
万方数据-数字化期刊群入网期刊
中国学术期刊（光盘版）全文收录期刊

华东地区优秀科技期刊
江苏省期刊方阵“双效期刊”
中国期刊网全文收录期刊
中国科技期刊数据库全文收录期刊



硫酸盐环境下CFRP加固顺序对混凝土梁界面黏结性能影响

Influence of CFRP Paste Sequence on Bond Performance of Concrete Beam Interface under Sulfate Environment

2020年1期 No.285 P41-46+58

混凝土；CFRP；双剪试验；硫酸盐；界面；环境影响系数

Concrete; CFRP; Double shear; Test sulfate; Interface; Environment influential coefficient

2020年1期 No.285 P41-46+58

10.19761/j.1000-4637.2020.01.041.07

国家自然科学基金项目（51278235）；国家自然科学基金青年基金项目（51508154）

王占银1，傅鸣春2

1.青海交通职业技术学院，西宁810003；2.北京科技大学土木与环境学院，100192

王占银1，傅鸣春2

王占银,傅鸣春.硫酸盐环境下CFRP加固顺序对混凝土梁界面黏结性能影响[J].混凝土与水泥制品,2020(1):41-46+58.

WANG Z Y,FU M C.Influence of CFRP Paste Sequence Bond Performance of Concrete Beam Interface under Sulfate Environment [J].China Concrete and Cement Products,2020(1):41-46+58.

浏览量:

1000

摘要：提出了先粘贴CFRP后硫酸盐腐蚀以及先硫酸盐腐蚀后粘贴CFRP两种加固顺序，开展了64块CFRP-混凝土试件的双剪试验，分析了CFRP粘贴顺序、粘贴长度、粘贴宽度对混凝土界面破坏模态、抗压强度、剥离荷载、黏结强度、界面能、黏结应力-滑移曲线的影响，并基于硫酸盐环境影响系数建立了CFRP-混凝土界面黏结强度模型。试验结果表明，硫酸盐环境下，环氧树脂胶体能较好的保护混凝土黏结区域；随着硫酸盐腐蚀时间的延长，界面的剥离荷载、黏结强度均呈下降趋势，腐蚀至123 d时，下降最为严重，而对于界面断裂能，腐蚀至123 d时，下降幅度反而降低；CFRP黏结长度为65 mm下的界面黏结强度最大，随着黏结长度的增加，CFRP-混凝土界面的黏结性能逐渐降低；硫酸盐环境影响系数的提出可为恶劣环境的分类提供科学依据。
Abstract: Two kinds of reinforcement sequence, CFRP first, then sulfate corrosion, and sulfate first, then CFRP, were put forward, and the double shear tests of 64 CFRP-concrete specimens were carried out, and the effects of CFRP paste sequence, bond length and width of bond on the failure mode, compressive strength, failure load, bond strength, fracture energy, bond stress- slip curve were analyzed, the bond strength model of CFRP-concrete interface was established based on the environmental impact coefficient of sulfate. The results show that the sulfate environment, epoxide resin can better protect concrete bond area. With the prolongation of sulfate corrosion time, failure load and compressive strength of the interface decrease, and when corrosion time is 123 days, the decline is the most serious, but for the interfacial fracture energy, when corrosion time is 123 days, the decrease range is reduced. Interfacial bond strength is maximum when CFRP bond length is 65 mm, with the bond length increases, the bond performance of interface between CFRP and concrete gradually reduces. The sulfate environment influential coefficient can provide scientific basis for the classification of harsh environment.

英文名 : Influence of CFRP Paste Sequence on Bond Performance of Concrete Beam Interface under Sulfate Environment

刊期 : 2020年1期 No.285 P41-46+58

关键词 : 混凝土；CFRP；双剪试验；硫酸盐；界面；环境影响系数

Key words : Concrete; CFRP; Double shear; Test sulfate; Interface; Environment influential coefficient

刊期 : 2020年1期 No.285 P41-46+58

DOI : 10.19761/j.1000-4637.2020.01.041.07

文章编号 :

基金项目 : 国家自然科学基金项目（51278235）；国家自然科学基金青年基金项目（51508154）

作者 : 王占银1，傅鸣春2

单位 : 1.青海交通职业技术学院，西宁810003；2.北京科技大学土木与环境学院，100192

王占银1，傅鸣春2

王占银,傅鸣春.硫酸盐环境下CFRP加固顺序对混凝土梁界面黏结性能影响[J].混凝土与水泥制品,2020(1):41-46+58.

WANG Z Y,FU M C.Influence of CFRP Paste Sequence Bond Performance of Concrete Beam Interface under Sulfate Environment [J].China Concrete and Cement Products,2020(1):41-46+58.





摘要

参数

结论

参考文献

引用本文

摘要：提出了先粘贴CFRP后硫酸盐腐蚀以及先硫酸盐腐蚀后粘贴CFRP两种加固顺序，开展了64块CFRP-混凝土试件的双剪试验，分析了CFRP粘贴顺序、粘贴长度、粘贴宽度对混凝土界面破坏模态、抗压强度、剥离荷载、黏结强度、界面能、黏结应力-滑移曲线的影响，并基于硫酸盐环境影响系数建立了CFRP-混凝土界面黏结强度模型。试验结果表明，硫酸盐环境下，环氧树脂胶体能较好的保护混凝土黏结区域；随着硫酸盐腐蚀时间的延长，界面的剥离荷载、黏结强度均呈下降趋势，腐蚀至123 d时，下降最为严重，而对于界面断裂能，腐蚀至123 d时，下降幅度反而降低；CFRP黏结长度为65 mm下的界面黏结强度最大，随着黏结长度的增加，CFRP-混凝土界面的黏结性能逐渐降低；硫酸盐环境影响系数的提出可为恶劣环境的分类提供科学依据。

Abstract: Two kinds of reinforcement sequence, CFRP first, then sulfate corrosion, and sulfate first, then CFRP, were put forward, and the double shear tests of 64 CFRP-concrete specimens were carried out, and the effects of CFRP paste sequence, bond length and width of bond on the failure mode, compressive strength, failure load, bond strength, fracture energy, bond stress- slip curve were analyzed, the bond strength model of CFRP-concrete interface was established based on the environmental impact coefficient of sulfate. The results show that the sulfate environment, epoxide resin can better protect concrete bond area. With the prolongation of sulfate corrosion time, failure load and compressive strength of the interface decrease, and when corrosion time is 123 days, the decline is the most serious, but for the interfacial fracture energy, when corrosion time is 123 days, the decrease range is reduced. Interfacial bond strength is maximum when CFRP bond length is 65 mm, with the bond length increases, the bond performance of interface between CFRP and concrete gradually reduces. The sulfate environment influential coefficient can provide scientific basis for the classification of harsh environment.

扫二维码用手机看

[1] 武玉涛.侵蚀环境下FRP-混凝土界面的粘结性能与耐久性分析[D].哈尔滨:哈尔滨工业大学,2012.

[2] 李茜莎.基于有限元的钢筋混凝土框架柱CFRP加固分析[J].混凝土与水泥制品,2019(12):74-77.

[3] ZHOU Y W,FAN Z H,et al.Bond behavior of FRP-to-concrete interface under sulfate attack:An experimental study and modeling of bond degradation[J].Construction and Building Materials,2015(85):9-21.

[4] 殷雨时,范颖芳,刘云雁.硫酸盐环境下水泥基材料多场耦合作用损伤分析[J].河南理工大学学报:自然科学版,2016,35(5):732-737.

[5] PAN J L,LEUNG K Y.Effect of concrete composition on FRP/concrete bond capacity[J].Journal of Composite construction,2007,11(6):611-618.

[6] 尚聪,马江霖,王崇革,等.CFRP与BFRP加固RC柱抗震性能比较研究[J].混凝土与水泥制品,2019(9):70-75.

[7] 殷雨时,范颖芳,徐义洪.粗糙度对CFRP-混凝土界面剪切黏结性能影响[J].建筑材料学报,2018,21(2):202-207.

[8] 陆新征,叶列平,滕锦光,等.FRP-混凝土界面黏结滑移本构模型[J].建筑结构学报,2005,26(4):10-18.

[9] 陆新征.FRP-混凝土界面行为研究[D].北京:清华大学,2004.

[10] NEUBAUER U,ROSTASY F S.Design aspects of concrete structures strengthened with externally bonded CFRP plates[J]. ECS Public,1999;2(1):109-18.

[11] MONTI M,RENEZLLI M,LUCIANI P.FRP adhesion in uncracked and cracked concrete zones[C].International symposium on FRP reinforcement for concrete structures,2003,1(6):183-192.

[12] WU Z S,ISLAM S M,SAID H.A three-parameter bond strength model for FRP-Concrete interface[C].Reinforcement Plastic Composite,2009,28:2309-2323.

[13] TAKEO K,MATSUSHITA H,MAKIZUMI T,et al.Bond characteristics of CFRP sheets in the CFRP bonding technique[C].Japan Concrete Institution,1997,1(1):1599-1604.

[14] Tan Z.Experimental research for RC beam strengthened with GFRP[D].China:Tsinghua University,2002.

[15] REN H T.Study on basic theories and long time behavior of concrete structures strengthened by fiber reinforced polymers[D].China:Dalian University of Technology,2003.

[16] UEDA T,SATO Y,ASANO Y.Experimental study on bond strength of continuous carbon fiber sheet[J].ACI,1999,407-416.

上一个

无

下一个

BFRC中玄武岩纤维分散性与弯曲韧性试验研究

头部文案

硫酸盐环境下CFRP加固顺序对混凝土梁界面黏结性能影响

相关文件