کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
256212 503543 2016 8 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Self-cementitious property of steel slag powder blended with gypsum
ترجمه فارسی عنوان
خصوصیات خودمختلفی از پودر سرباره فولاد مخلوط با گچ
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کلمات کلیدی
سرباره فولاد، گچ، اموال سیمان هیدراتاسیون، استحکام
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی


• The self-cementitious property of steel slag with 5 wt% gypsum was revealed.
• The hydration and hardening properties of steel slag-gypsum and cement are compared.
• The hydration products of steel slag-gypsum are different from pure steel slag.
• The hydration degree or strength with ages conforms to a functional relationship.

In order to reveal the self-cementitious property of steel slag, the hydration and hardening characteristics of steel slag powder blended with 5 wt% gypsum were investigated from hydration heat, non-evaporable water (Wn) and Ca(OH)2 contents, hydration products, strength and so on. The results show that the hydration process of steel slag-gypsum also has two exothermic peaks, which is similar to cement, but it has a longer early hydration period and lower hydration exothermic rate. The second exothermic peak value of steel slag-gypsum is only about one eighth of that of cement. The hydration products of steel slag-gypsum mainly contain amorphous C-S-H gels, rod-like ettringite and a small amount of Ca(OH)2, while almost no ettringite is generated in hydration products of pure steel slag. Compared with pure steel slag paste, steel slag-gypsum paste has a more hydration products and more compact structure. The relationships of Wn contents or Ca(OH)2 contents with ages for steel slag-gypsum paste show a good exponential relationship, while both the paste and mortar strengths of steel slag-gypsum with logarithm of ages conform to the linear relationship. In addition, the Wn content and strength of steel slag-gypsum paste can be obviously improved by the simulated cement pore solution at 28 days and 90 days.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 113, 15 June 2016, Pages 835–842
نویسندگان
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