کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7883570 | 1509641 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dispersion of graphene oxide agglomerates in cement paste and its effects on electrical resistivity and flexural strength
ترجمه فارسی عنوان
پراکندگی آگلومره های گرافن اکسید در خمیر سیمان و اثرات آن بر مقاومت الکتریکی و مقاومت خمشی
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کلمات کلیدی
اکسید گرافن، پراکندگی، سیمان، مقاومت الکتریکی،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
چکیده انگلیسی
Actual dispersion of graphene oxide (GO) in cement paste was investigated by using both X-ray computed tomography and X-ray photoelectron spectroscopy. It was found that GO nanosheets are mainly agglomerated, as an individual phase, with platelet-like morphology and little GO being absorbed onto surfaces of cement particles and hydration products. By performing an electrical resistivity test, GO agglomerates are found to be more electrically insulative than cement paste. Therefore, it is not possible to develop self-sensing cement composites by incorporating GO directly without resolving its dispersion issue. However, GO agglomerates enhance the flexural strength of cement paste because of their special morphology and intrinsic strength. Results showed that the flexural strength of cement paste was increased by 83% with incorporation of 0.04% GO by weight of cement.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Composites - Volume 92, September 2018, Pages 145-154
Journal: Cement and Concrete Composites - Volume 92, September 2018, Pages 145-154
نویسندگان
Xiangyu Li, Linhao Wang, Yuqing Liu, Wengui Li, Biqin Dong, Wen Hui Duan,