کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6715136 1428739 2018 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dispersion and stability of graphene nanoplatelet in water and its influence on cement composites
ترجمه فارسی عنوان
پراکندگی و پایداری نانوپالتکتون گرافن در آب و تاثیر آن روی کامپوزیتهای سیمان
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
Cement nanocomposites were fabricated by slight modification of existing casting method to introduce graphene nanoplatelet (GNP) into cement paste. Dispersant dosage and ultrasonication time were varied to seek the optimum dispersion effectiveness. The stability of sonicated GNPs in suspension was assessed quantitatively by light absorbance over time and results suggested that 1 h of sonication and 15% of surfactant was sufficient to produce a 1% GNP suspension that remains stable for 6 h. Particle strengthening effect was obtained through the strong physical bond at the graphene interface, which was reflected by the doubling of the hardness. Mercury intrusion testing indicated that GNP could reduce the effective porosity and refine the critical pore diameter, particularly at the concentration of 1% GNP where reductions of 37% and 30% on the effective porosity and critical pore diameter were found respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 167, 10 April 2018, Pages 403-413
نویسندگان
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