The use of a Phosphate-Based Migrating Corrosion Inhibitor to Repair Reinforced Concrete Elements Contaminated by Chlorides

International Conference on Materials, Alloys and Experimental Mechanics 2017

材料科学;金属学;机械制造

Tittarelli, Francesca^1 ; Mobili, Alessandra^1 ; Bellezze, Tiziano^1

Department of Materials and Environment Engineering and Physics (SIMAU), Università Politecnica Delle Marche (UNIVPM), UdR INSTM, Via Brecce Bianche, Ancona

60131, Italy^1

关键词: Concrete cover;    Inhibitor;    Migrating corrosion inhibitors;    Reinforced concrete elements;    Reinforcement corrosion;    Reinforcing steel bar;    Sodium monofluorophosphate;    Surface impregnation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/225/1/012106/pdf
DOI  :  10.1088/1757-899X/225/1/012106

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The use of sodium monofluorophosphate (MFP) was experimented as migratory inhibiting treatment against corrosion of reinforced concrete elements induced by chlorides. The results show that sodium monofluorophosphate, applied by surface impregnation, is able to slow down reinforcement corrosion only for reinforcing steel bars with concrete cover not thicker than 1 cm. This limitation is most probably due to the difficulty, with the type of application adopted, in making MFP to reach concentrations high enough to inhibit the corrosive process at greater depths from the impregnation surface.