表层嵌贴碳纤维筋与混凝土粘结强度试验研究

谢标云; 杨勇; 周丕健; 蔡军伟

doi:10.13204/j.gyjz201008024

表层嵌贴碳纤维筋与混凝土粘结强度试验研究

doi: 10.13204/j.gyjz201008024

1.
华侨大学土木工程学院,福建泉州 362021

基金项目:

国家自然科学基金项目(50978109)

详细信息

中图分类号: TU528.572
计量
- 文章访问数: 51
- HTML全文浏览量: 1
- PDF下载量: 42
- 被引次数: 0
出版历程
- 收稿日期: 2010-03-18
- 刊出日期: 2010-08-20

EXPERIMENT STUDY ON BOND STRENGTH BETWEEN CONCRETE AND NEAR SURFACE MOUNTED (NSM) CFRP RODS

1.
College of Civil Engineering of Huaqiao University,Quanzhou 362021,China

摘要

摘要: 为研究表层嵌贴碳纤维筋的粘结性能，对3批计36个试件的表层嵌贴碳纤维筋加固进行拉拔试验，对环氧树脂胶、环氧树脂砂浆等4种不同类型粘结剂进行对比研究，分析养护时间、粘结剂强度、开槽尺寸、碳纤维筋表面处理工艺等参数对粘结强度的影响。对拉拔试件裂缝开展、破坏形态和碳纤维筋端部滑移情况进行详细观测。试验研究结果表明：开槽尺寸、粘结剂强度、碳纤维筋表面处理工艺对加固试件粘结强度影响作用明显，养护时间影响较小可忽略；石英细砂配制的环氧树脂砂浆粘结性能良好，具有较好推广价值。
- 碳纤维筋(CFRP) /
- 表层嵌贴加固法(NSM法) /
- 拉拔试验 /
- 粘结剂
Abstract: The effects of curing time,binder strength,slot size and surface treatment on the bond strength were further studied. Pullout tests of 36 specimens were conducted to study the bond strength of the CFRP rods,and then four different bond materials were compared. During the experiment process,the failure modes,the slip between the CFRP and concrete and the cracking type were studied in detail. From the experimental study,it could be found that the influences on bond strength of binder strength,slot size and carbon fiber reinforced surface treatment technology were significant,but the curing time was small or neglected. The bond properties of epoxy mortar which made by quartz sand was excellent,which would be worth while popularizing.
- CFRP rods /
- NSM method /
- pullout test /
- binder

HTML全文

参考文献(17)

Asplund S O. Strengthening Bridge Slabs with Grouted Reinforcement[J]. ACI Journal，1949，20(6) :397-406.

[2] 岳清瑞，李庆伟，杨勇新. 纤维增强复合材料嵌入式加固技术[J]. 工业建筑，2004，34(4) :1-4.

[3] 李荣，腾锦光，岳清瑞. FRP 材料加固混凝土结构应用的新领域嵌入式( NSM) 加固法[J]. 工业建筑，2004，34 (4) :5-12.

[4] 姚谏. FRP 复合材料加固混凝土结构新技术研究进展[J]. 科技通报，2004，20(3) :216-221.

[5] De Lorenzis L，Nanni A. Bond Between Near-Surface Mounted Fiber-Reinforced Polymer Rods and Concrete Instrucural Strengthening[J]. ACI Structural Journal，2002，99 (2) : 123-132.

[6] De Lorenzis L，Rizzo A，La Tegola A. A Modified Pull-Out Test for Bond of Near-Surface Mounted FRP Rods in Concrete [J].Composites Part B-Engineering，2002，33(8) :589-663.

[7] De Lorenzis L. Anchorage Length of Near-Surface Mounted Fiber-Reinforced Polymer Rods for Concrete Strengthening-Analytical Modeling[J]. ACI Structure Journal，2004:375-386.

[8] Focacci F，Nanni A，Bakis C E. Local Bond-Slip Relationship for FRP Reinforcement in Concrete[J]. Journal of Composites for Construction，ASCE，2000:24-31.

[9] Blaschko M. Bond Behaviour of CFRP Strips Glued into Slits [C]∥Proceedings of the Sixth International Symposium on FRP Reinforcement for Concrete Structures. Singapore: 2003: 205-214.

[10] Hassan T，Rizkalla S. Investigation of Bond in Concrete Structures Strengthened with Near Surface Mounted Carbon Fiber Reinforced Polymer Strips[J]. Journal of Composites for Construction，2003，7(3) :248-356.

[11] De. Lorenzis L，Nanni A. Characteristics of FRP Rods as NSM Reinforcement[J]. ASCE Journal of Composites for Construction，2001，5(2) :114-121.

[12] 李荣，滕锦光，岳清瑞. 嵌入式CFRP 板条－混凝土界面粘结性能的试验研究[J]. 工业建筑，2005，35(8) :3l-34.

[13] 周朝阳，向传家，贺学军. 内嵌FRP 加固钢筋混凝土梁的受弯承载力分析[J]. 建筑结构，2006，36(12) :19-21.

[14] 袁霓霏. 表层嵌贴CFRP 板加固钢筋混凝土梁的抗弯承载力研究[D]. 杭州:浙江大学，2006.

[15] 朱晓旭，姚谏，周延阳. 混凝土表层嵌贴CFRP 板条的极限粘结承载力分析[J]. 科技通讯，2006，22(6) :792-795.

[16] 杨勇，谢标云，聂建国，等. 表层嵌贴碳纤维筋加固钢筋混凝土梁受力性能试验研究[J]. 工程力学，2009，26(3) :106-112.

[17] 贺学军，周朝阳，徐玲. 内嵌CFRP 板条加固混凝土梁的抗弯性能试验研究[J]. 土木工程学报，2008，41(12) :14-20.

施引文献

资源附件(0)

访问统计