کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7884638 | 1509714 | 2018 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Reduction of water content in calcium aluminate cement with/out phosphate modification for alternative cementation technique
ترجمه فارسی عنوان
کاهش میزان آب در سیمان آلومینات کلسیم با اصلاح فسفات با استفاده از روش سیمان سازی جایگزین
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
چکیده انگلیسی
Cementation of the secondary aqueous wastes from TEPCO Fukushima Daiichi Nuclear Power Plant is challenging due to the significant strontium content and radioactivity, leading to a potential risk of hydrogen gas generation via radiolysis of water content. The present study investigates the reduction of water content in calcium aluminate cement (CAC) with/out phosphate modification by a heat-treatment during the solidification. The reduction of water in the CAC was found restricted by the rapid formation of crystalline hydration phases, whereas the phosphate-modified system allowed the gradual reduction of water, achieving the reduction of 60% water content at 95â¯Â°C. Curing at 60-95â¯Â°C also eliminated the significant cracks found at 35â¯Â°C in the phosphate system. The possible difference in the amorphous products, NaCaPO4ânH2O type at 35â¯Â°C and Ca(HPO4)âxH2O type at 60-95â¯Â°C, may have contributed to the improvement in the microstructure together with the change in the pore size distribution.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Research - Volume 109, July 2018, Pages 243-253
Journal: Cement and Concrete Research - Volume 109, July 2018, Pages 243-253
نویسندگان
Inés Garcia-Lodeiro, Keita Irisawa, Feiyang Jin, Yoshihiro Meguro, Hajime Kinoshita,