کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6711602 | 1428719 | 2018 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Corrosion protection of steel embedded in cement-stabilised rammed earth
ترجمه فارسی عنوان
حفاظت از خوردگی فولاد جاسازی شده در زمین تثبیت شده با سیمان
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کلمات کلیدی
CSREUCSRCASM1SM2OMCSCEIRAPSDHCPMDDUnconfined compressive strength - استحکام فشاری نامحدودWestern Australia - استرالیای غربیSaturated Calomel Electrode - الکترودهای کالومل اشباع شدهParticle size distribution - توزیع اندازه ذراتCapillary absorption - جذب مویرگیrecycled concrete aggregate - جمع آوری بتن بازیافت شدهMaximum dry density - حداکثر تراکم خشکOptimum moisture content - رطوبت مطلوبPassivation - رویینگی، پسیواسیونRammed earth - زمین خاموشsustainable building - ساختمان پایدارCorrosion potential - پتانسیل خوردگیHalf-cell potential - پتانسیل نیمه سلولیCarbonation - کربناته
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
Cement-stabilised rammed earth (CSRE) reinforced with steel is a modern adaptation of an ancient construction technique, permitting the use of a wider range of structural forms and applications than those used traditionally. However, corrosion behaviour of steel embedded in CSRE is not yet understood, casting doubt on the longevity of these structural solutions. In this paper, we assessed the ability of a range of CSRE mixes stabilised with 10% cement to protect embedded steel against carbonation-induced corrosion by using electrochemical measurements and considering also material alkalinity, carbonation resistance and capillary absorption. Results demonstrated that the pH of the CSRE mixes was sufficiently alkaline to provide the appropriate environment for passivation of steel reinforcement. Based on the experimental results, carbonation would most likely have reached the reinforcement within approximately 5-15â¯years (50â¯mm cover) or 30-75â¯years (150â¯mm cover), depassivating the reinforcement within the design life span. The findings demonstrated that a corrosion potential of â200â¯mV SCE indicates conditions of negligible corrosion of steel in CSRE. As behaviour varied little between the four tested soil mixes (of varying granularity), it is reasonable to expect that findings presented here also apply to other soil mixes stabilised with 10% cement.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 187, 30 October 2018, Pages 942-953
Journal: Construction and Building Materials - Volume 187, 30 October 2018, Pages 942-953
نویسندگان
Alexandra H. Meek, Christopher T.S. Beckett, Maddalena Carsana, Daniela Ciancio,