کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4918399 | 1428761 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of graphene oxide agglomerates on workability, hydration, microstructure and compressive strength of cement paste
ترجمه فارسی عنوان
اثرات آگلومره اکسید گرافین بر قابلیت کار، هیدراتاسیون، ریزساختار و مقاومت فشاری رب سیمان
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
In this study, the effects of graphene oxide (GO) agglomerates on the workability, hydration, microstructure, and compressive strength of cement paste were addressed. The workability of cement paste was reduced because of the presence of GO agglomerates, which entrap a large amount of water. The mini-slump diameter was reduced by 21% with the incorporation of 0.03% by weight GO in cement paste. Hydration of the cement paste was accelerated due to nucleation sites provided by GO agglomerates serving as seeding material in the cement paste. The incorporation of GO refined the pore structure of the cement paste. The incorporation of GO was found to have much greater impact on macropores than on large and small mesopores. At 28Â days, the incorporation of 0.04% by weight GO produced a 14% improvement in the compressive strength of cement paste. Below 0.03%, the incorporation of GO had no positive effects on compressive strength.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 145, 1 August 2017, Pages 402-410
Journal: Construction and Building Materials - Volume 145, 1 August 2017, Pages 402-410
نویسندگان
Xiangyu Li, Yan Ming Liu, Wen Gui Li, Chen Yang Li, Jay G. Sanjayan, Wen Hui Duan, Zongjin Li,