کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6720722 | 503565 | 2015 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Long-term performance of concrete surface coatings in soil exposure of marine environments
ترجمه فارسی عنوان
عملکرد بلندمدت پوشش سطحی بتن در مواجهه با خاک محیط های دریایی
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کلمات کلیدی
کربناته، یون کلرید، سازه های بتنی، طول عمر محیط دریایی، عمر خدمات قرار گرفتن در معرض خاک، پوشش سطح،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
The present research addresses the performance of coated concrete samples after 88Â months of natural exposure to coastal soil of the Persian Gulf. A concrete mixture proportioned with water-to-cement ratio of 0.5 was used for casting the reference and all coated specimens. Five types of surface coatings were investigated. Samples were extracted at different ages of 9, 36, and 88Â months to monitor carbonation depth and chloride ion penetration into concrete. Slight signs of carbonation are observed for the reference concrete and specimens coated with cementitious coatings. Chloride ion concentration profiles are analyzed during the exposure period. Chloride ion diffusivity is investigated for each sampling time. Surface chloride build-up is also monitored. Time to corrosion initiation is calculated and incorporated as a means of ranking coating efficiencies. Among all studied coatings, aliphatic acrylic and polyurethane are proved to reduce chloride ion concentration most effectively. This resulted in increasing the simulated time required for corrosion initiation in soil exposure at marine environments.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 94, 30 September 2015, Pages 656-663
Journal: Construction and Building Materials - Volume 94, 30 September 2015, Pages 656-663
نویسندگان
Seyedhamed Sadati, Mahdi Arezoumandi, Mohammad Shekarchi,