Improvement of intelligent corrosivity-detection and corrosion-protection for reinforcing steel
By Wu, Peng-Peng; Song, Guang-Ling; Zhu, Yi-Xing; Yan, Lei; Feng, Zhen-Liang; Zheng, Da-Jiang
Published in Corrosion Science
2021
Abstract
A series of Mg-Al alloys were fabricated by means of magnetron-sputtering, aiming to improve the intelligence of Mg as a smart concrete corrosivity-detector and corrosion-protector. The effect of Al alloying on Mg dissolution in a simulated concrete pore solution (SCPS) without and with Cl− contamination was systematically investigated. The results showed that proper Al alloying could significantly enhance the intelligence of Mg in corrosivity-detection and corrosion-protection by reducing the self-dissolution, avoiding the over-protection, sensitively probing increased corrosivity, and effectively protect the steel activated by chlorides.