کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1455335 | 989036 | 2010 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of sodium sulfate on the alkali activation of fly ash
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of sodium sulfate on the alkali activation of fly ash Effect of sodium sulfate on the alkali activation of fly ash](/preview/png/1455335.png)
چکیده انگلیسی
This paper discusses the effect of the presence of a small amount of SO42- (a 16 group oxyanion) on the nature and chemical composition of the resulting N–A–S–H gel and zeolites (main reaction products from the alkaline activation of fly ashes). To this end, fly ash was activated with different alkaline solutions containing 2.5% by weight of sodium sulfate. The paste was cured in an oven at 85 °C for different periods of time. The presence of sulfate was observed to lengthen the time needed for certain percentages of N–A–S–H gel to precipitate, while shortening the time needed for a given percentage of zeolites to precipitate. This, in turn, had an adverse effect on the mechanical strength of the material.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Composites - Volume 32, Issue 8, September 2010, Pages 589–594
Journal: Cement and Concrete Composites - Volume 32, Issue 8, September 2010, Pages 589–594
نویسندگان
M. Criado, A. Fernández Jiménez, A. Palomo,