摘要
碳纤维混凝土是极具应用前景的机场道面融雪除冰材料,而机场道面裂缝的普遍存在对碳纤维混凝土导电性能存在着严重影响。通过采用实际机场道面要求的混凝土配合比设计,在测试并优化选择碳纤维掺量的基础上,通过试验研究建立了裂缝宽度对碳纤维混凝土导电性能的影响关系。试验结果表明:随着裂缝宽度的增加,起初碳纤维混凝土电阻变化率与裂缝宽度呈线性关系;在临界的裂缝宽度之后电阻变化率大幅度上升,此临界裂缝宽度被定义为碳纤维混凝土有效导电临界宽度。机场道面融雪除冰碳纤维混凝土的有效临界宽度值在0.65 mm左右。
The carbon fiber conductive concrete （CFCC） is a new material with extensive application prospect in the airport pavement deicing. Whereas, cracks in CFCC have a serious influence on the properties of its conductivity. The concrete proportioning design of CFCC in this paper is based on the requirement of airport pavement. Through experimental study, the appropriate dosage of carbon fiber was determined and the relationship between the crack width and the conductive property of CFCC was made. The research showed that the CFCC resistance change rate with the increase of crack width was a linear relation at first, and then rose significantly after a critical crack width, which was defined as the effective conducting critical width of CFCC. According to the test, whose value was about 0. 65 mm especially for airport deicing CFCC.
出处
《工业建筑》
CSCD
北大核心
2015年第7期118-121,共4页
Industrial Construction
基金
国家自然科学基金资助项目(51208018)
关键词
碳纤维
导电混凝土
裂缝宽度
导电性能
机场道面
融雪除冰
carbon fiber
conductive concrete
crack width
electrical conductivity
airport pavement
deicing
