کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5021342 1469359 2017 43 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of the fringing electric field on the apparent electric permittivity of cement-based materials
ترجمه فارسی عنوان
اثر میدان الکتریکی برشی بر روی الکتریکی ظاهری مواد سیمان بر اساس
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
چکیده انگلیسی
The fringing electric field increases the apparent relative permittivity of cement when the electrodes do not cover the entire specimen area. The apparent permittivity increases with increasing thickness, decreases with increasing area, and is much higher when the permittivity is obtained from the slope (P) of 1/C versus thickness than the slope (Q) of C versus area (C = measured capacitance). Using P, the value (2 kHz) for various areas is 830-1760 and 810-1750 for plain and silica-fume cements, respectively. Using Q, the value for various thicknesses is only 150-375 and 144-354 for plain and silica-fume cements, respectively. When the electrodes cover the entire area, the fringing field effect is weaker, with lower relative permittivity 24-38 and 23-36 for plain and silica-fume cements, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Part B: Engineering - Volume 126, 1 October 2017, Pages 192-201
نویسندگان
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