文章摘要
李庆华,徐世烺,李赫.提高纤维编织网与砂浆粘结性能的实用方法[J].,2008,(5):685-690
提高纤维编织网与砂浆粘结性能的实用方法
Practical method of improving bonding behavior between fiber textile and mortar
  
DOI:10.7511/dllgxb200805012
中文关键词: 碳纤维编织网  粘砂  粘结性能  裂缝
英文关键词: carbon fiber textile  sticking sand  bonding behavior  cracks
基金项目:国家自然科学基金资助项目(重点项目50438010).
作者单位
李庆华,徐世烺,李赫  
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中文摘要:
      纤维编织网增强混凝土结构(简称TRC)的力学性能与纤维编织网和基体之间的粘结状况密切相关.采用环氧树脂浸渍纤维编织网并在其表面粘砂的方法来提高粘结强度,控制砂浆基体的开裂.通过四点弯曲试验和拉拔试验考察了不同粘砂粒径对TRC粘结性能的影响.试验结果表明,采用环氧树脂浸渍纤维编织网并在其表面粘砂的方法能够提高纤维编织网与基体之间的摩擦力,甚至产生咬合效应.因此可明显提高TRC的弯曲开裂荷载,增加裂缝数量,改善纤维编织网与砂浆之间的粘结性能.其中粘砂粒径为0.15~0.30 mm改善效果最为显著.
英文摘要:
      Mechanical behavior of textile reinforced concrete (TRC) is related to the bonding behavior between textile and matrix. Sands of different sizes were used after textiles were impregnated by epoxy resin to increase bond strength and control cracks. Four-point bending and pull-out tests were carried out to investigate the effect of sand size on bonding behavior of TRC. The experimental results show that, sticking sands after epoxy resin impregnating can increase the frictional resistance, even produce interlocking between textile and matrix. Therefore, this method can enhance cracking load of TRC under bending stress, increase the number of cracks, and improve bonding behavior between textile and matrix, especially spreading sands with 0.15-0.30 mm grain size after impregnation of roving with an epoxy resin.
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