کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1455118 989020 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of cathodic protection on steel–concrete bond strength using ion migration measurements
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Effect of cathodic protection on steel–concrete bond strength using ion migration measurements
چکیده انگلیسی

Impressed current cathodic protection (ICCP) is a widely used method to protect steel reinforcements against corrosion. Bond degradation between concrete and steel at protection and overprotection levels was studied. Two types of materials were tested: an ordinary Portland cement (OPC) and a mixture of 85% OPC and 15% fly ash (OPC/FA). Concrete specimens were immersed in a 3.5% sodium chloride (NaCl) solution. Chemical analysis of sodium, potassium and hydrogen ions was performed using atomic absorption spectrophotometry (AAS). Hydrogen ion content was monitored using electrochemical impedance spectroscopy (EIS). Mechanical behaviour was analysed by means of pullout tests, and microstructure characterisation was carried out using scanning electron microscopy (SEM). Sodium, potassium and hydrogen ions were found at the concrete–steel interface. The mechanical properties of the specimens were poorer at overprotection level than at protection level.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Composites - Volume 34, Issue 2, February 2012, Pages 242–247
نویسندگان
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