Rebar corrosion monitoring using novel embedded filament mini-sensors
The prediction and assessment of corrosion initiation at reinforcement is a key consideration in evaluating the service life of corroded concrete structures.This paper deals with the development,testing and use of novel calibration-free mini-sensors for the evaluation of rebar corrosion initiation in concrete members.By such “watch dog-sensors,consisting of several parallel arranged,0.065 to 0.5 mm thin iron filaments,the penetration of the depassivation front into concrete can be monitored depth-dependently.Main advantages of the filament-sensors are the simple design and measuring principle.Also a subsequent sensor installation into boreholes with a filling grout is viable.Several series of lab investigations in corrosive solutions and at small concrete members as well as first practical tests on concrete members using filament-sensors were conducted.Here,starting with the state-of-theart-review of corrosion monitoring,the results and the experience made with the types of embedded sensors are presented and briefly discussed.
reinforced concrete structures rebar corrosion corrosion state embedded mini-sensor corrosion monitoring durability
A. Holst K. Hariri H. Budelmann S. Bruder
Institute for Building Materials,Concrete Construction and Fire Protection (iBMB),Technical University of Braunschweig,Germany
国际会议
The World Forum on Smart Materials and Smart Structures Technology(SMSST07)(2007年世界智能材料与智能结构技术论坛)
重庆·南京
英文
2007-05-01（万方平台首次上网日期，不代表论文的发表时间）