Application of sacrificial point anode for prevention of steel corrosion in cracked concrete

Muhammad Akbar Caronge, Hidenori Hamada, Rita Irmawaty, Yasutaka Sagawa, Daisuke Yamamoto

研究成果: ジャーナルへの寄稿学術誌査読

5 被引用数 (Scopus)


The effectiveness of a commercially available sacrificial point anode for corrosion prevention of steel in cracked concrete is presented. Reinforced concrete prisms with dimensions of 150 mm x 150 mm x 500 mm were prepared with a water to cement ratio (W/C) of 0.4 showing crack widths ranging from 0.1 to 0.4 mm obtained by pre-cracking. These specimens were exposed to three conditions: (1) laboratory air (temperature of 202C and relative humidity of 60%); (2) immersed in 3% NaCl solution; and (3) dry/wet cycles of above mentioned conditions. Measurements included the free corrosion potential, polarization behavior of the sacrificial point anode, anodic-cathodic polarization curve of the reinforcement steel and visual observation. The test results show that the sacrificial point anode was effective to prevent the embedded steel from corrosion in cracked concrete. Specimens exposed to dry/wet cycles or immersed in 3% NaCl solution demonstrated a better protection than those exposed to laboratory air due to the high moisture condition. Thus, a sacrificial point anode becomes active to protect the steel bars even in cracked concrete.

ジャーナルJournal of Advanced Concrete Technology
出版ステータス出版済み - 10月 2015

!!!All Science Journal Classification (ASJC) codes

  • 建築および建設
  • 材料科学(全般)


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