کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8097573 1522072 2018 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Application of secondary steel slag in subgrade: Performance evaluation and enhancement
ترجمه فارسی عنوان
کاربرد سرباره فولاد ثانویه در زیرگروه: ارزیابی و ارتقای عملکرد
کلمات کلیدی
سرباره فولاد، فروپاشی، مکمل مکمل، فعال سازی شیمیایی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
Steel slag accumulates heavily in China and has caused significant environmental burdens. In this study, secondary steel slag (SSS) was used a potential material in subgrade treatment. This study first blended SSS of different contents with lime soil and inspected the performances of the mixes in terms of compactability, strength and expansion ratio. The optimum treatment effect was obtained at a proportion of 50% SSS, 45% soil and 5% lime. Scanning electron microscopy test was conducted to reveal the strength development of SSS lime soil. The components of SSS were then supplemented by lime and metakaolin referring to the oxide compositions and proportions of the Portland cement. The unconfined compressive strength (UCS) of the reconstituted SSS increased from 0.73 MPa (plain SSS) to 4.09 MPa at 28d. Three agents, NaOH, NaCl and Na2SO4, were selected to further improve the activity of the reconstituted SSS. At the content of 5%, the UCSs of the specimens activated by NaCl and Na2SO4 increased to 8.02 MPa and 10.88 MPa at 28d, respectively. The reconstitution and activation of SSS is an effective way to improve the performance in subgrade treatment.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Cleaner Production - Volume 181, 20 April 2018, Pages 102-108
نویسندگان
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