کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9777798 | 1509700 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The role of RHA-blended cement in stabilizing metal-containing wastes
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
Time to final setting, strength development and leachability of heavy metals from the solidified wastes using reactive rice husk ash (rRHA)-blended cement as solidification binder were investigated. The rRHA was prepared by firing at 650 °C for 1 h. Synthetic metal hydroxides and plating sludge were solidified using cement blended with 0, 10, 20 and 30 wt.% rRHA. Experimental results showed that synthetic Zn(OH)2 and the plating sludge caused rapid setting for cement paste but prolong the final setting for rRHA-blended cements. The rate of strength development was also decreased during the first 14 days of curing. However, these interfering effects were reduced when cement was blended with 10 wt.% rRHA. In addition, the plating sludge could be loaded at 30 wt.% to the cement blended with 10 wt.% rRHA and gave both the 28-day strength and metal concentration in TCLP leachates that meet the regulatory limits for landfilling.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Composites - Volume 27, Issues 7â8, AugustâSeptember 2005, Pages 782-787
Journal: Cement and Concrete Composites - Volume 27, Issues 7â8, AugustâSeptember 2005, Pages 782-787
نویسندگان
Suwimol Asavapisit, Nittaya Ruengrit,