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研究了碳酸根型镁铝水滑石(LDH-MgAl-CO3)焙烧产物(CLDH)在含氯离子的中性化混凝土模拟孔隙液中对钢筋腐蚀行为的影响.极化曲线电位监测以及EIS测试表明,经CLDH处理后的孔隙液中钢筋的极化曲线出现明显的钝化区间,其腐蚀电位较未处理的有一定提高,表面的阻抗也有较大增加.此外,离子浓度分析发现,较未处理时,经CLDH处理后的孔隙液其[Cl-]/[OH-]值降低了4～5个数量级.
The effects of the calcined product of LDH-MgAl-CO3 calcined product (CLDH) on the corrosion behavior of steel bars were investigated in a simulated neutral chloride-containing pore fluid with chloride ions.The monitoring of polarization curves and EIS test , The polarization curve of the steel in the pore fluid after CLDH treatment showed a significant passivation interval, the corrosion potential of the reinforcement has a certain increase compared with the untreated, the surface impedance also increased greatly.In addition, the ion concentration analysis found that compared with the untreated , The [Cl -] / [OH-] value of CLDH treated pore fluid decreased by 4 ~ 5 orders of magnitude.