Sugarcane bagasse ash sand (SBAS) can be used as a bioadditive in concrete. However, little is known about its effects on the steel corrosion process. This paper reports the evaluation of the corrosion susceptibilities of steel immersed in simulate concrete pore solutions, with addition of SBAS, to understand the corrosion process in reinforced structure. The open-circuit potential profiles and polarisation curves suggested the favourable formation of a passive film on the steel immersed in the SBAS-containing medium. Electrochemical impedance spectroscopy confirmed that the SBAS-containing medium presents better passivating properties, showing that this recycled material can be used as corrosion inhibitor for reinforced concrete, encouraging its use in the civil industry.

甘蔗渣灰砂（SBAS）可用作混凝土中的生物添加剂。然而，对其对钢腐蚀过程的影响知之甚少。这篇论文报告了对浸入模拟混凝土孔隙溶液中的钢的腐蚀敏感性的评估，并添加了SBAS，以了解钢筋结构的腐蚀过程。开路电势曲线和极化曲线表明，浸在含SBAS介质中的钢上有利地形成了钝化膜。电化学阻抗谱证实，含SBAS的介质具有更好的钝化性能，表明该回收材料可用作钢筋混凝土的腐蚀抑制剂，从而鼓励其在民用工业中使用。