+高级检索
碳纤维织物增强水泥基复合材料试验研究
DOI:
作者:
作者单位:

作者简介:

通讯作者:

基金项目:


Experimental Investigations on Carbon Textile ReinforcedCementitious Composites
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
    摘要:

    采用轴向拉伸试验研究了碳纤维织物增强水泥基复合材料(TRC)的静力力学性能,试验工况考虑了配网率、短切钢纤维以及碳纤维织物上的预拉力3个因素. 试验结果表明:没有掺加短切钢纤维的薄板,随着配网率的增加,碳纤维织物利用率降低,试验过程中纤维层与水泥基层逐渐分离,最终薄板发生剥离破坏;对碳纤维织物施加预拉力能使薄板的开裂应力提高,从而提高TRC 构件的正常使用寿命;在薄板中掺入短切钢纤维有助于提高其界面性能,进而使薄板抗拉强度、极限应变均得以提高;与施加预拉力相比,掺入短切钢纤维对薄板力学性能的改善更加显著;对碳纤维织物施加预拉力的同时在薄板中掺入1%的短切钢纤维可显著提高碳纤维的利用率,薄板破坏时碳纤维被完全拉断.

    Abstract:

    Quasi-static uniaxial tensile behavior of carbon textile reinforced cementitious composites (TRC) was studied,and the factors of reinforcement ratio and short steel fibres and prestress were considered in the tests. The test results showed that the efficiency of carbon fibers decreased with the increase of textile ratio for the TRC plates without steel fibres during the tests,the textile layer and matrix layer were gradually separated,and debonding failure of TRC plates occurred ultimately. Applying prestress force to the textile can increase the initial cracking stress of TRC plates,and thus improved the normal service life of TRC components. Adding steel fibres in TRC plates was helpful to improve the interfacial properties,and thus both the tensile strength and ultimate strain of the plates were enhanced. Compared with the application of prestress to the textile,more pronounced enhancements of mechanical properties were achieved by the addition of steel fibres. Applying prestress to the textile and adding 1% of steel fibres in plates at the same time can significantly improve the efficiency of carbon fibers. Eventually,carbon fibers were completely broken when the plates were damaged.

    参考文献
    相似文献
    引证文献
文章指标
  • PDF下载次数:
  • HTML阅读次数:
  • 摘要点击次数:
  • 引用次数:
引用本文

周芬,刘玲玲,杜运兴.碳纤维织物增强水泥基复合材料试验研究[J].湖南大学学报:自然科学版,2017,44(11):66~72

复制
历史
  • 收稿日期:
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2017-11-27
  • 出版日期:
作者稿件一经被我刊录用,如无特别声明,即视作同意授予我刊论文整体的全部复制传播的权利,包括但不限于复制权、发行权、信息网络传播权、广播权、表演权、翻译权、汇编权、改编权等著作使用权转让给我刊,我刊有权根据工作需要,允许合作的数据库、新媒体平台及其他数字平台进行数字传播和国际传播等。特此声明。
关闭