کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
821887 1469556 2009 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructure and macroscopic properties of hybrid carbon nanofiber/silica fume cement composites
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Microstructure and macroscopic properties of hybrid carbon nanofiber/silica fume cement composites
چکیده انگلیسی

The effect of up to 2 wt% of “as received” carbon nanofiber (CNF) loading on the microstructural, physical, and mechanical (compressive and splitting tensile strengths) properties of hybrid CNF/silica fume cement composites has been studied. Silica fume (SF) facilitated CNF dispersion due to its small particle size and improved the interfacial interaction between the CNFs and the cement phases. The CNFs were found embedded as individual fibers throughout the paste and self-aggregated as clumps in pockets. Mechanically, the CNFs embedded in the paste and at the pocket edges acted to offset the effect of defects created by the pockets. The addition of CNFs promoted pore refinement of the composites and increased the pore volume in the 6–200 nm pore diameter range, ascribed in part to interstitial pores between the entangled CNFs.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 69, Issues 7–8, June 2009, Pages 1310–1318
نویسندگان
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