The corrosion resistance of the Ukrainian steel embedded in concrete after and before quenching
العناوين الأخرى
مقاومة للتآكل من الصلب الأوكرانية جزءا لا يتجزأ في الخرسانة بعد و قبل التبريد
المؤلف
المصدر
Nahrain University-College of Engineering Journal
العدد
المجلد 19، العدد 2 (31 ديسمبر/كانون الأول 2016)، ص ص. 342-352، 11ص.
الناشر
تاريخ النشر
2016-12-31
دولة النشر
العراق
عدد الصفحات
11
التخصصات الرئيسية
العلوم الهندسية والتكنولوجية (متداخلة التخصصات)
الملخص EN
The corrosion resistance of the Ukrainian structural steel(0.22%C) and dual-phase steel which produced from it and embedded in concrete was carried out in this investigation, a test specimens of the Ukrainian steel was prepared and heated to a different temperatures )730 .760 , 790 , 820 , 850, 860 , and8700C( for (50 min) holding time and then quenched in water , a dual-phase steel with a different volumetric fraction of martensite (4.5, 12.6 , 21.4 , 43.2 , 64.8 ,85.3 ,and 100%Ms ) was produced respectively .
Test specimens of Ukrainian steel and of dual-phase steel were initially curing in different mediums (Kufa river water, 3.5%NaCl solution, and Arabian gulf water) for (21 Days) , to know the effect of the volumetric fraction of martensite on the corrosion resistance, also another specimens of Ukrainian steel and of (21.4%Ms) dual-phase steel immersed in concrete which conforming to ( Bs 532: Part 2: 1990) and after (1 Day) cured in water for (7) days ,to find the effect of the embedded in concrete on the corrosion resistance were cured to the same above test .
Corrosion rates were measured by using a modified Tafel extrapolation corrosion test technique (ASTM G 109) , which entails voltage control and current quantifications.
In addition, the (CMS-105) system was employed for daily observations on steel bars immersed in similar curing conditions .
The parameters measured included corrosion potential (Ecorr), corrosion current (Icorr), polarization resistance (Rp), and corrosion rate (Rcorr.) for all specimens .
The experimental results showed that all the dual-phase steel rebar, embedded or not embedded in concrete, have more times corrosion resistant than Ukrainian structural steel for all used mediums (Kufa river water, 3.5%NaCl solution, and Arabian gulf water), because dual-phase steel contains no carbide and most of the carbon atoms are trapped in the martensite structure , and the Ukrainian steel contains the eutectoid carbide that is susceptible to pitting corrosion , and because of the presence of pearlite phase in the microstructure , also there was an effective for the martensite ,s volume percentage (%Ms) on the corrosion resistance of dual-phase steel embedded in concrete ,when it was increased the corrosion resistance increased also.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
al-Ubaydi, Rahi Abd Hasan. 2016. The corrosion resistance of the Ukrainian steel embedded in concrete after and before quenching. Nahrain University-College of Engineering Journal،Vol. 19, no. 2, pp.342-352.
https://search.emarefa.net/detail/BIM-819165
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
al-Ubaydi, Rahi Abd Hasan. The corrosion resistance of the Ukrainian steel embedded in concrete after and before quenching. Nahrain University-College of Engineering Journal Vol. 19, no. 2 (Dec. 2016), pp.342-352.
https://search.emarefa.net/detail/BIM-819165
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
al-Ubaydi, Rahi Abd Hasan. The corrosion resistance of the Ukrainian steel embedded in concrete after and before quenching. Nahrain University-College of Engineering Journal. 2016. Vol. 19, no. 2, pp.342-352.
https://search.emarefa.net/detail/BIM-819165
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
رقم السجل
BIM-819165
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر