کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6712854 | 1428728 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characterization of EPS lightweight concrete microstructure by X-ray tomography with consideration of thermal variations
ترجمه فارسی عنوان
شناسایی میکروساختار بتن سبک با توموگرافی اشعه ایکس با توجه به تغییرات حرارتی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
This paper presents a refined morphological and thermal characterization of a polystyrene-based mortar using X-ray micro-tomography where a dedicated X-ray scanning and volumetric processing protocol was developed. All the reconstructed volumes had a mean voxel size between 10 and 20â¯Î¼m. In complementary procedure, the interactions between the different phases of the material have been investigated, by observing the interface using scanning electron microscopy (SEM). After a set of volumetric analysis, the obtained representative elementary volume (REV) was 10â¯Ãâ¯10â¯Ãâ¯10â¯mm3. The microstructure (porosity, pore diameter and interface, etc.) has been studied by 3D image analysis. The material's response to thermal solicitations at a local scale has also been examined, by observing its microstructural variations under thermal loads using an optical microscope. The micro-tomographic results allow us to assess a representative elementary volume for the polystyrene mortar, to evaluate its total porosity using two different approaches, and to have access to the pore size distribution. The SEM images show a good adherence between the two phases of the material, and the microscopic tracing under thermal solicitations indicates possible alterations of the beads from a temperature of 100â¯Â°C, unlike the literature results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 178, 30 July 2018, Pages 339-348
Journal: Construction and Building Materials - Volume 178, 30 July 2018, Pages 339-348
نویسندگان
Maroua Maaroufi, Kamilia Abahri, Chady El Hachem, Rafik Belarbi,