Concrete with triphasic conductive materials for self-monitoring of cracking development subjected to flexure

详细信息    查看全文

• 作者：Yining Ding^a ; ; Zhibo Han^a ; Yulin Zhang^b ; J.B. Aguiar^c
• 关键词：Self-monitoring of concrete cracking ; Fractional change in resistance ; Crack opening displacement ; Fibers ; Nano carbon black ; Hybrid effect
• 刊名：Composite Structures
• 出版年：2016
• 出版时间：15 March 2016
• 年：2016
• 卷：138
• 期：Complete
• 页码：184-191
• 全文大小：2135 K

文摘

In this study, the macro steel fiber (SF), carbon fiber (CF) and nano carbon black (NCB) as triphasic conductive materials were added into concrete, in order to improve the conductivity and ductility of concrete. The influence of NCB, SF and CF on the post crack behavior and conductivity of concrete was explored. The effect of the triphasic conductive materials on the self-diagnosing ability to the load–deflection property and crack widening of conductive concrete member subjected to bending were investigated. The relationship between the fractional change in surface impedance (FCR) and the crack opening displacement (COD) of concrete beams with conductive materials has been established. The results illustrated that there is a linear relationship between COD and FCR.