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Potential distribution within a cathodic protected steel reinforced cocrete structure
Author
Source
University of Sharjah Journal of Pure and Applied Sciences
Issue
Vol. 2, Issue 2 (30 Jun. 2005), pp.47-57, 11 p.
Publisher
Publication Date
2005-06-30
Country of Publication
United Arab Emirates
No. of Pages
11
Main Subjects
Topics
Abstract AR
تمت حماية بنية خرسانية المكونة من سطحين و بالأبعاد (20 سم * 25 سم * 50 سم) يفصل بينهما عامود خرساني من الوسط بمساحة سطح (15 سم * 15 سم) و طول 100 سم.
تم إضافة كلوريد الصوديوم إلى خلطة الخرسانة كمصدر لأيونات الكلور بنسبة 1 % من وزن الاسمنت.
و تم وضع انود على شكل شبك على بعد 5 سم من حديد التسليح من الأعلى.
تم قراءة جهد التسليح بعد مرور 28 يوما من التسقية المائية للخرسانة -433 ميلي فولت و حسب القطب المرجعي كبريتات النحاس.
طبقت الحماية الكاثودية للبنية بتطبيق تيار ثابت خارجي بحيث تعين قيم الجهد للفولاذ المتاخم للانود لتصبح -850 ميلي فولت ( Free IR).
و عند مراقبة جهد حديد التسليح في كامل البنية بوساطة القطب المرجعي كبريتات النحاس و حسب ASTM C876 و عند نقط مختلفة تشمل جميع البنية وجد أن الجهد لحديد التسليح المتاخم للانود بقي ضمن حدود الحماية المطلوبة فيما تناقص الجهد بالبعد عن الانود حتى الطرف الآخر ليهبط دون القيم المقروءة قبل تطبيق الحماية الكاثودية.
Abstract EN
Impressed current cathodic protection system was installed for a reinforced concrete structure which consists of two slabs (50 cmx25cmx10 cm) dimensions and connected by a concrete column in the middle [15cm x 15 cm cross section] and 100 cm long.
NaCl was added to the concrete mix (1% Cl based on cement weight) in order to simulate chloride induced corrosion of the steel reinforcement.
Steel tendons in form of a grid were used and were inserted over one of the slabs from the top and with 5 cm distance away from the reinforcement.
Potential of the reinforcement was measured after 28 days of curing and was found to be –433 mV vs.
CSE.
Within the whole structure, steel reinforcement was polarized by means of a dc-current source.
Polarization was done in such a way to adjust the IR free (instant off) potential of the reinforcement next to the anode to be –850 mV according to CSE.
Protection potential readings were measured along the structure by a copper-copper sulfate electrode and according to ASTM C876.
Mapping of polarization potential was done throughout the whole structure.
It was found that the potential of the reinforcement next to the anode achieved the potential requirements for protection while the polarization potential decreased to values below the open-circuit potential along the structure away from the position of the anode.
American Psychological Association (APA)
Masadeh, Sami. 2005. Potential distribution within a cathodic protected steel reinforced cocrete structure. University of Sharjah Journal of Pure and Applied Sciences،Vol. 2, no. 2, pp.47-57.
https://search.emarefa.net/detail/BIM-24900
Modern Language Association (MLA)
Masadeh, Sami. Potential distribution within a cathodic protected steel reinforced cocrete structure. University of Sharjah Journal of Pure and Applied Sciences Vol. 2, no. 2 (Jun. 2005), pp.47-57.
https://search.emarefa.net/detail/BIM-24900
American Medical Association (AMA)
Masadeh, Sami. Potential distribution within a cathodic protected steel reinforced cocrete structure. University of Sharjah Journal of Pure and Applied Sciences. 2005. Vol. 2, no. 2, pp.47-57.
https://search.emarefa.net/detail/BIM-24900
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 56-57
Record ID
BIM-24900