کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4913305 | 1428760 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Strength and microstructure properties of spent coffee grounds stabilized with rice husk ash and slag geopolymers
ترجمه فارسی عنوان
خواص قدرت و ریزساختار قهوه های مصرف شده تثبیت شده با خاکستر پوسته برنج و ژئوپلیمرهای سرباره
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
This paper investigates the strength and microstructure properties of spent coffee grounds stabilized with rice husk ash and slag geopolymers to produce a green construction subgrade material. Spent coffee grounds (CG) and rice husk ash (RHA) are organic wastes derived from agricultural products. CG is the residue from ground coffee beans. RHA is a by-product from the burning rice husk used to generate electricity. Ground granulated blast furnace slag (S) is a waste by-product derived from steel production. RHA and S were used as geopolymeric precursors (P). This study provides an insight on the long-term strength performance and microstructural formation of geopolymers synthesized from agricultural waste products. The influence factors studied were liquid alkaline activator content (L), RHA content, S content, temperature and curing time. By observing the strength development of CG-RHA geopolymers for up to 90 days, it was found that elevated temperature curing was needed for these CG:RHA geopolymers to develop long-term strengths. Test results show that an optimum mix of CG:RHA:S 70:20:10 cured at 50 °C can achieve an Unconfined Compressive Strength (UCS) of 2 MPa after 90 days of curing. The outcome of this research will enable CG, S and RHA waste products to be used as sustainable materials in pavement applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 146, 15 August 2017, Pages 312-320
Journal: Construction and Building Materials - Volume 146, 15 August 2017, Pages 312-320
نویسندگان
Cherdsak Suksiripattanapong, Teck-Ang Kua, Arul Arulrajah, Farshid Maghool, Suksun Horpibulsuk,