کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
256628 503557 2015 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Constitutive model of concrete damaged by freeze–thaw action for evaluation of structural performance of RC elements
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Constitutive model of concrete damaged by freeze–thaw action for evaluation of structural performance of RC elements
چکیده انگلیسی


• The effects of FTC on concrete behavior are included in the damage model.
• The FTD model considers separately the effect of FTC on compressive and tensile strength.
• A new relationship to properly evaluate the equivalent number of FTC is proposed.
• Different experimental and numerical results are compared.
• An experimental campaign on simply supported beams subjected to FTC is simulated.

The coupled environmental-mechanical damage model extended by the authors to include the degradation effects on structural behavior of RC structures due to freezing-and-thawing cycles (FTC) is reformulated and generalized in the present work in order to better simulate the different aspects of the physical phenomenon. In particular the model is modified to consider separately the effect of FTC respectively on compressive and tensile strength and a new relationship to properly evaluate the equivalent number of FTC is proposed. To validate the model, an experimental campaign carried out on simply supported beams subjected to FTC is simulated. By comparing obtained numerical results with experimental evidence, the model is proved to be suitably accurate in reproducing the main aspects observed during tests: failure load, ultimate displacement, and failure mode. Actually the enhancement of freeze and thaw – mechanical model gives the base for the definition of a reliable numerical tool for analysis of RC structures subjected to FTC.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 98, 15 November 2015, Pages 559–569
نویسندگان
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