西南交通大学学报 2012, 47(3) 394-399 DOI:   10.3969/j.issn.0258-2724.2012.03.007  ISSN: 0258-2724 CN: 51-1277/U

本期目录 | 下期目录 | 过刊浏览 | 高级检索                                                            [打印本页]   [关闭]
论文
扩展功能
本文信息
Supporting info
PDF(0KB)
[HTML全文]
参考文献
服务与反馈
把本文推荐给朋友
加入我的书架
加入引用管理器
引用本文
Email Alert
文章反馈
浏览反馈信息
本文关键词相关文章
纤维格栅
水泥混凝土
力学特性
四点弯曲试验
抗弯强度
本文作者相关文章
颜祥程
PubMed
Article by Yan,X.C

纤维格栅增强水泥混凝土的弯曲力学特性

颜祥程, 翁兴中, 寇雅楠, 梁磊, 张广显

空军工程大学工程学院, 陕西 西安 710038

摘要

为研究纤维格栅类型、纤维格栅表面处理及粗集料最大粒径对水泥混凝土弯曲力学特性的影响,对14组150 mm×150 mm×600 mm的水泥混凝土试件进行了四点弯曲试验,分析了试件破坏过程,探讨了纤维格栅与水泥混凝土相互作用的力学机理,提出了纤维格栅使用的若干建议.结果表明:试件属于脆性破坏;纤维格栅明显改善了水泥混凝土的弯曲力学特性,使水泥混凝土的抗弯强度提高6.62%~31.40%;与粗集料最大粒径为40 mm时相比,粗集料最大粒径为20 mm时,水泥混凝土的抗弯强度提高2.72%~9.97%;纤维格栅表面经环氧树脂处理后,试件的抗弯强度提高8.30%~11.88%.

关键词 纤维格栅   水泥混凝土   力学特性   四点弯曲试验   抗弯强度  

Bending Mechanical Properties of Cement Concrete with Fiber Grid Reinforcement

YAN Xiangcheng, WENG Xingzhong, KOU Yanan, LIANG Lei, ZHANG Guangxian

The Engineering Institute, Air Force Engineering University, Xi'an 710038, China

Abstract:

In order to investigate the influence of fiber grid type, surface treatment and coarse aggregate limiting grain size on bending mechanical properties of cement concrete, fourteen group specimens with dimensions of 150 mm×150 mm×600 mm were tested through four-point bending experiments. The failure processes of the specimens were analyzed, the mechanical mechanism of the interaction between fiber grid and cement concrete was discussed, and some suggestions about the use of fiber grid were proposed. The research result shows that brittle failure characterizes the damage of the specimens. Fiber grid greatly improves the bending mechanical properties of cement concrete, and the bending strength of cement concrete is improved by 6.62% to 31.40%. When coarse aggregate limiting grain size is 20 mm compared with 40 mm, the bending strength of cement concrete increases by 2.72% to 9.97%. The bending strength of cement concrete is improved by 8.30% to 11.88% when fiber grid surface is treated with epoxy resin.

Keywords: fiber grid   cement concrete   mechanical property   four-point bending experiment   bending strength  
收稿日期 2011-09-18 修回日期  网络版发布日期 2012-05-29 
DOI: 10.3969/j.issn.0258-2724.2012.03.007
基金项目:

总后勤部基建营房部科研项目(KJYZ0909,总990713)

通讯作者:
作者简介: 颜祥程(1984-),男,博士研究生,研究方向为机场道面工程,电话:15802924916,E-mail:yxc307@126.com

参考文献:

[1] 徐世烺,李庆华. 超高韧性水泥基复合材料在高性能建筑结构中的基本应用[M]. 北京:科学出版社,2010: 63-85.
[2] 师晓权,张志强,李志业,等. GFRP筋混凝土梁抗剪承载力影响因素[J]. 西南交通大学学报,2010,45(6): 898-913. SHI Xiaoquan, ZHANG Zhiqiang, LI Zhiye, et al. Influencing factors of shear capacity of concrete beam reinforced with GFRP[J]. Journal of Southwest Jiaotong University, 2010, 45(6): 898-913.
[3] 袁谱. 玻璃纤维格栅加强沥青路面研究. 广州:华南理工大学土木与交通学院,2009.
[4] HEGGER J, WILL N, BRUCKERMANN O, et al. Loading bearing behavior and simulation of textile-reinforced concrete[J]. Materials and Structures, 2006, 39(8): 765-776.
[5] HEGGER J, VOSS S. Investigation on the bearing behavior and application potential of textile reinforced concrete[J]. Engineering Structures, 2008, 30(7): 2050-2056.
[6] 徐世烺,李庆华,李贺东. 碳纤维编织网增强超高韧性水泥基复合材料弯曲性能的试验研究[J]. 土木工程学报,2007,40(12): 69-76. XU Shilang, LI Qinghua, LI Hedong. An experimental study on the flexural properties of carbon textile reinforced ECC[J]. China Civil Engineering Journal, 2007, 40(12): 69-76.
[7] 刘建兰,王朝辉,王选仓. 不同层位格栅加筋的沥青混凝土力学性能[J]. 交通运输工程学报,2009,9(2): 22-27. LIU Jianlan, WANG Chaohui, WANG Xuancang. Mechanical properties of reinforced asphalt concretes with different position grids[J]. Journal of Traffic and Transportation Engineering, 2009, 9(2): 22-27.
[8] AHMED S F U, MAALEJ M. Tensile strain hardening behaviour of hybrid steel-polyethylene fiber reinforced cementitious composites[J]. Construction and Building Materials, 2009, 23(1): 96-106.
[9] 尹世平,徐世烺. 提高纤维编织网保护层混凝土抗剥离能力的有效方法[J]. 建筑材料学报,2010,13(4): 468-473. YIN Shiping, XU Shilang. Effective method to improve anti-flaking capacity of cover concrete to textile[J]. Journal of Building Materials, 2010, 13(4): 468-473.
[10] 中华人民共和国建设部. GB 50010—2002混凝土结构设计规范[S]. 北京:中国建筑工业出版社,2002.
[11] 李赫. 纤维编织网增强混凝土力学性能的实验研究及理论分析. 大连:大连理工大学土木建筑学院,2006.
[12] 荀勇,孙伟,REINHARDT H W,等. 短纤维和织物增强混凝土薄板试验研究[J]. 土木工程学报,2005,38(11): 58-63. XUN Yong, SUN Wei, REINHARDT H W, et al. Experiment on interface bonding performance of carbon textile reinforced concrete sheets[J]. China Civil Engineering Journal, 2005, 38(11): 58-63.

本刊中的类似文章
1.乔神路, 高亮, 曲村, 辛涛.桥上纵连板式无砟轨道无缝道岔
力学特性[J]. 西南交通大学学报, 2010,45(5): 669-675
2.裴譞, 张宇文, 邓飞.超空泡航行器舵效水洞实验研究 [J]. 西南交通大学学报, 2011,46(6): 1008-1013

文章评论 (请注意:本站实行文责自负, 请不要发表与学术无关的内容!评论内容不代表本站观点.)

Copyright 2008 by 西南交通大学学报