کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6725601 | 503614 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Lightweight aggregates from water reservoir sediment with added sodium hydroxide
ترجمه فارسی عنوان
ترکیبات سبک وزن از رسوبات مخزن آب با افزودن هیدروکسید سدیم
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
Lightweight aggregates were produced from a mixture of water reservoir sediment and sodium hydroxide at a temperature of 1045-1085 °C. The mixtures were also pre-cured at 120 °C to observe the effect of geopolymerization. The physical properties of dry and wet sediment samples were observed at a given NaOH concentration. The results showed that the obtained LWAs meet the European Union regulation UNIEN 13055-1, which requires the LWA bulk density to be lower than 2000 kg/m3. The performance of most of the obtained LWAs reached that of commercial products. When calcined at 1110 °C, the LWAs lost the properties of a geopolymer cement and bloated, which lowered their bulk density. The addition of NaOH promoted the formation of a glassy phase that vitrified the LWA surface, making the level of water adsorption below 5%. The mineral phases of LWAs were quartz, hematite, albite, and hercynite.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 46, September 2013, Pages 79-85
Journal: Construction and Building Materials - Volume 46, September 2013, Pages 79-85
نویسندگان
Yi-Chong Liao, Chi-Yen Huang, Yen-Ming Chen,