کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6749658 1430628 2018 31 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Assessment of reinforcement corrosion protection of self-curing concrete
ترجمه فارسی عنوان
ارزیابی حفاظت از خوردگی تقویت بتن خود پخت
کلمات کلیدی
بتن خود پخت پلیمرهای محلول در آب، مقاومت الکتریکی، نفوذپذیری یون کلرید، ریز ساختار، خوردگی تقویت کننده
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
The curing of concrete requires high water demand. In this study reinforcement corrosion protection of self-curing concrete (SC) mixtures incorporating two water-soluble polymers; polyethylene glycol (PEG) and polyacrylamide (PAM) have been evaluated. Durability indices; electrical resistivity, chloride ion penetrability and water permeability, were evaluated and compared to that of control concrete mixture with no self-curing agents under different curing regimes. Reinforcement corrosion monitoring was conducted by exposing reinforced concrete prisms at the age of 28 days to wet-dry cycles for a total period of 96 weeks. In the wetting cycle, the prisms were partially immersed in 5% sodium chloride solution at ambient temperature. The corrosion activity was evaluated by measuring the corrosion potential and corrosion current density. Self-curing concrete mixtures showed better reinforcement protection and durability indices than those of air-cured control mixture. Short water curing period of 3 days significantly improved the reinforcement protection and durability indices of the self-curing concrete mixtures to a level comparable to that of the control mixture that was moist-cured for 28 days. Self-curing concrete represents a step towards a new construction material due to its lower demand for curing water and hence can reserve the limited water resources in many parts of the world.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Building Engineering - Volume 20, November 2018, Pages 72-80
نویسندگان
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