مشخصات پژوهش

عنوان	Assessing Reliability of Bending of Concrete Beams Ex-posed to Freeze-thaw Conditions Based on Compressive Stress Limit Reduction
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Reliability, Freeze-thaw cycles, Stress limit, Concrete, Stochastic model, Compression
چکیده	For existing reinforced concrete structures exposed to freeze-thaw conditions,there is an increasing engineering concern over their remaining safety. This paper presents a novel experimental-theoretical stochastic model for evaluating the reliability of concrete structures subjected to freeze-thaw conditions based on stress limit reduction. Reliability theory and experimental works provide the basis for the model development. Water cement ratio, air content,and number of freeze-thaw cycles are considered as the model variables. Compressive stress limit reduction in freeze-thaw conditions was treated as a stochastic variable. The effectiveness of the proposed model was evaluated using an example concrete structure element. The paper demonstrates that after, for example, 10 years experiencing FT cycles in a cold city; there liability of the example concrete beam reduces to 52:5 percent for
پژوهشگران	سیدمهدی حسینیان (نفر اول)، فواد بهمنی (نفر دوم)