کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6725708 | 503614 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Utilization of andesite processing wastewater treatment sludge as admixture in concrete mix
ترجمه فارسی عنوان
استفاده از لجن تصفیه فاضلاب پردازش آندزیت به عنوان مخلوط در مخلوط بتن
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کلمات کلیدی
مخلوط، آندزیت، بتن، ویژگی های مکانیکی، مشخصات فیزیکی،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
The dried physicochemical sludge from the coagulation-flocculation treatment of an andesite processing plant wastewater was used as concrete admixture in powder form. Various physicochemical sludges obtained with various coagulant/flocculants (alum, FeCl3, and sepiolite) were experienced dry particulate (powder) form of the sludge was replaced at 0.5-1.5% w/w of the cement for 250Â kg/m3 cement dosage. The admixture doses were complied with local standard. Slump tests were conducted on fresh concrete, and compressive strengths were measured for 7 and 28Â days hardened concrete samples. Physical properties, namely freeze/thaw resistance, water absorption, capillary suction, void ratio and porosity were determined at the end of 28Â days for the hardened concrete samples. The concrete consistency (slump) was improved up to 16-18Â cm from 14.5Â cm by the admixture. The best compressive strength was achieved with 0.5% w/w for admixtures. The admixture sludges obtained with organic flocculants were worse than the other admixtures. The structural changes after freeze/thaw tests were very close to the reference concrete (concrete without admixture); only the capilary suction had increased. The results confirmed that up to 0.5% of physicochemical sludge can be replaced with cement in concrete for use in certain non-load bearing structures that require medium strength concrete.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 46, September 2013, Pages 150-155
Journal: Construction and Building Materials - Volume 46, September 2013, Pages 150-155
نویسندگان
Merve Sogancioglu, Esra Yel, Ulku Sultan Yilmaz-Keskin,