掺纳米碳纤维导电水泥基材料的制备  

PREPARATION OF CONDUCTIVE CEMENT BASED MATERIAL WITH CARBON NANOFIBER

作　　者：苏安双 汪晖[2] 高小建[2] 卢安汛 

机构地区：[1]黑龙江省水利科学研究院,哈尔滨150080 [2]哈尔滨工业大学土木工程学院,哈尔滨150090

出　　处：《低温建筑技术》2017年第5期4-7,共4页Low Temperature Architecture Technology

基　　金：黑龙江省博士后科研启动金资助项目(LBH-Q14150)

摘　　要：通过调节减水剂掺量改变水泥净浆或砂浆的流变性能,并研究了固定纳米碳纤维条件下试件的电阻率平均值与变异系数。结果表明:适当提高水泥净浆或砂浆的流动性或降低屈服剪切应力、塑性粘度,有利于降低掺纳米碳纤维水泥基材料的电阻率,提高导电稳定性;过高或过低的流变参数均不利于稳定的导电水泥基材料制备。In this paper, the rheological properties of cement paste or mortar were changed by adding different dosages of superplasticizer, and the average resistivity and the variation coefficient of specimens were studied at the same content of carbon nanofibers. The results show that the resistivity of cement-based materials containing carbon nanofibers is reduced but the conductivity stability is improved when the fluidity of cement paste or mortar has a proper increase or the shear yield stress and the plastic viscosity are reduced to a certain extent. Too high or too low rheological parameters are disadvantageous for preparing cement based materials with a stable conductivity.

关 键 词：水泥基材料 纳米碳纤维 流变性 电阻率 

分 类 号：TU528.061[建筑科学—建筑技术科学]