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KSCE Journal of Civil Engineering

, Volume 23, Issue 4, pp 1766–1775 | Cite as

Experimental Study on Reinforcement and Chloride Extraction of Concrete Column with MPC-CFRP Composite Anode

  • Yue Li
  • Xiongfei Liu
  • Zigeng WangEmail author
Structural Engineering
  • 17 Downloads

Abstract

In this research, Magnesium Phosphate Cement (MPC) was innovatively used to bond with Carbon Fiber Reinforced Plastic (CFRP) in order to form the MPC-CFRP as a composite material, adopted both for chloride ions extraction and reinforcement of concrete columns. First of all, a series of tests were conducted to evaluate the feasibility of the MPC-CFRP as anode of Electrochemical Chloride Extraction (ECE) system, including chloride ions concentration, Scanning Electron Microscope (SEM) and tensile strength. Then, the MPC-CFRP was used to wrap around reinforced concrete column for the sake of reinforcement and extraction of chloride ions. The test results indicated that the chloride extraction efficiency and the tensile resistance of the MPC-CFRP electrode were superior to the control group. The ECE process can decrease the interface bonding strength between the concrete and the steel rebar while the compression resistance of the columns could be increased remarkably. Therefore, the MPCCFRP composite material is capable of achieving the dual functions of strengthening and repairing the reinforced concrete construction.

Keywords

Magnesium Phosphate Cement (MPC) Electrochemical Chloride Extraction (ECE) Carbon Fiber Reinforced Plastic (CFRP) concrete column interface bonding strength 

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Copyright information

© Korean Society of Civil Engineers 2019

Authors and Affiliations

  1. 1.Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing Key Laboratory of Earthquake Engineering and Structural Retrofit, College of Architecture and Civil EngineeringBeijing University of TechnologyBeijingChina
  2. 2.School of Civil and Transportation EngineeringHebei University of TechnologyTianjinChina

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