دانلود مقاله انگلیسی رایگان:وابستگی مقاومت الکتریکی به رطوبت در کامپوزیت های پایه سیمانی کم نفوذ با نانولوله های کربنی چند جداره - 2021
دانلود بهترین مقالات isi همراه با ترجمه فارسی 2
دانلود مقاله انگلیسی برق الکترونیک رایگان
  • Moisture dependence of electrical resistivity in under-percolated cement-based composites with multi-walled carbon nanotubes Moisture dependence of electrical resistivity in under-percolated cement-based composites with multi-walled carbon nanotubes
    Moisture dependence of electrical resistivity in under-percolated cement-based composites with multi-walled carbon nanotubes

    سال انتشار:

    2021


    عنوان انگلیسی مقاله:

    Moisture dependence of electrical resistivity in under-percolated cement-based composites with multi-walled carbon nanotubes


    ترجمه فارسی عنوان مقاله:

    وابستگی مقاومت الکتریکی به رطوبت در کامپوزیت های پایه سیمانی کم نفوذ با نانولوله های کربنی چند جداره


    منبع:

    ScienceDirect- Elsevier- Journal of Materials Research and Technology, Journal Pre-proof: doi:10:1016/j:jmrt:2021:11:151


    نویسنده:

    Geuntae Hong


    چکیده انگلیسی:

    Cement-based piezoresistive composites have attracted significant attention as smart construction materials for embedding self-sensing capability in concrete infrastructure. Although a number of studies have been conducted using multi-walled carbon nanotubes (MWCNTs) as a functional filler for self-sensing cement-based composites, studies addressing the influence of the internal moisture state on the electrical properties are relatively scant. In this study, we aim to experimentally investigate the effect of internal moisture state on the electrical resistivity of cement-based composites containing MWCNTs as an electrically conductive medium to raise a need for calibration of self-sensing data considering the internal moisture state. To this end, the moisture dependence of electrical resistivity in under-percolated cement-based composites was mainly evaluated, along with other material properties such as strength, shrinkage, and flowability. Results revealed that the electrical resistivity increased almost linearly as the internal relative humidity (IRH) decreased, and the increase was more pronounced below the percolation threshold. In addition, it was found that the strength gained by the microfiller effect of MWCNTs was significantly reduced particularly in under-percolated mixtures, leading to overall strength reductions. Furthermore, this study showed that the more the MWCNT was added, the smaller the flowability was obtained due to the increased viscosity of the mixture. The findings of this study are expected to provide pivotal information for accurate and reliable interpretations of self-sensing data generated by MWCNT-embedded cement-based composites.
    Keywords: carbon nanotubes | cement-based composites | electrical resistivity | internal relative humidity | percolation threshold | self-sensing


    سطح: متوسط
    تعداد صفحات فایل pdf انگلیسی: 30
    حجم فایل: 2154 کیلوبایت

    قیمت: رایگان


    توضیحات اضافی:




اگر این مقاله را پسندیدید آن را در شبکه های اجتماعی به اشتراک بگذارید (برای به اشتراک گذاری بر روی ایکن های زیر کلیک کنید)

تعداد نظرات : 0

الزامی
الزامی
الزامی
rss مقالات ترجمه شده rss مقالات انگلیسی rss کتاب های انگلیسی rss مقالات آموزشی
logo-samandehi