钢纤维-石墨烯导电混凝土受弯过程的力-电效应试验研究  

Mechano-electric effect of steel fiber and graphene reinforced conductive concrete during flexural process

作　　者：张苡铭[1] 俞乐华 

机构地区：[1]华中科技大学武昌分校城市建设学院,湖北武汉430064 [2]华东交通大学理工学院土木建筑学院,江西南昌330000

出　　处：《混凝土》2016年第2期52-55,59,共5页Concrete

基　　金：国家自然科学基金青年基金项目(51168015)

摘　　要：利用石墨烯材料的纳米属性和超强的导电能力,较为领先地对石墨烯导电混凝土进行了初步研究,并针对混凝土材料受弯破坏全过程,研究了石墨烯与钢纤维混杂增强混凝土材料在受弯过程中的力-电效应和受弯机敏性。研究表明,钢纤维导电混凝土在纤维掺量较低时对受弯过程的机敏性较差,而石墨烯的掺入使得钢纤维混凝土的机敏性得到了明显提升,二者在改善导电混凝土的力-电效应方面表现出了明显的正混杂效应。研究发现,可以利用一次线性函数对钢纤维-石墨烯导电混凝土的电阻变化率-挠度曲线进行拟合,电阻变化率与挠度的相关性较好。Nano properties and super conductive ability of graphene were employed to investigate the electrical conductivity of graphene reinforced concrete.Mechano-electric effect and flexural sensitivity of graphene hybrid steel fiber reinforced concrete during flexural process were studied. The results indicate that the flexural sensitivity of steel fiber at low content is very poor, however, the addition of graphene improve the flexural sensitivity significantly. The hybridization of steel fiber and graphene shows an obvious positive hybrid effect. The resistance change rate and deflection curve of steel fiber and graphene hybrid reinforced concrete can be fitted by linear func- tion,The resistance change rate and deflection show a good correlation.

关 键 词：石墨烯 导电混凝土 力-电效应 钢纤维 

分 类 号：TU528.01[建筑科学—建筑技术科学]