کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6719334 | 503539 | 2016 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Properties of lightweight fly ash geopolymer concrete containing bottom ash as aggregates
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In order to evaluate the utilization of waste from coal combustion thermal power plant, the properties of lightweight geopolymer concrete (LWGC) containing fly ash as geopolymer binder and bottom ash as aggregates were studied. Sodium silicate solution (NS) and 10 M sodium hydroxide (NH) were used as alkali activators. The NS/NH ratios of 0.5, 1.0, and 1.5 with liquid/ash (L/A) ratios of 0.70, 0.75, and 0.80 were used. The compressive strength, splitting tensile strength, surface abrasion resistance, density, thermal conductivity, and ultrasonic pulse velocity (UPV) of concrete were tested. The results indicated that fly ash and bottom ash could be used to produce LWGCs with compressive strengths of 14.3-18.1 MPa, splitting tensile strengths of 1.2-2.0 MPa, and densities of 1661-1688 kg/m3. Theirs thermal conductivity coefficients of 0.43-0.47 W/m K were lower than those of the geopolymer concrete containing natural aggregate. LWGCs in this study could thus be used for moderate strength concrete and thermal insulation concrete.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 111, 15 May 2016, Pages 637-643
Journal: Construction and Building Materials - Volume 111, 15 May 2016, Pages 637-643
نویسندگان
Ampol Wongsa, Yuwadee Zaetang, Vanchai Sata, Prinya Chindaprasirt,