کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7884822 1509716 2018 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
New analytical possibilities for monitoring the phase development during the production of autoclaved aerated concrete
ترجمه فارسی عنوان
امکانات تحلیلی جدید برای نظارت بر توسعه فاز در تولید بتن هوادهی اتوکلاو
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
چکیده انگلیسی
This work presents improved analytical methods for both steps of the production process of autoclaved aerated concrete (AAC), the phase development during the hydration before autoclaving and during the autoclaving process itself. The improvement includes new insights into preparation methods of AAC samples for powder diffraction as well as Rietveld refinement strategies. For the first time a new implementation for calculating anisotropic crystal domain sizes is applied to major hydrate phases occurring during AAC production, namely portlandite during the hydration before autoclaving and tobermorite during the autoclaving process. The calculation of anisotropic domain size growth, which can be implemented in the Rietveld environment, is based on crystallographically and geometrically appropriate models. The implementation of calculating anisotropic domain sizes for the Rietveld software TOPAS 5.0 allows a superior Rietveld fit and a more accurate quantification of the phase development. Additionally it enables the tracking of growth mechanism of portlandite during hydration.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Research - Volume 107, May 2018, Pages 247-252
نویسندگان
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