کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7885265 1509742 2016 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Degradation of mortar under advective flow: Column experiments and reactive transport modeling
ترجمه فارسی عنوان
تخریب ملات تحت جریان تزریقی: آزمایش ستون ها و مدل سازی حمل و نقل واکنشی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
چکیده انگلیسی
To study the alteration of Portland cement mortar from the El Cabril disposal facility under advective water flow conditions, and to test the applicability of the C-S-H dissolution rate law obtained in our previous study, experiments using columns filled with mortar fragments were performed. Variation of the chemical composition of the output solutions and the analyses of the mortar fragments by means of visual inspection, SEM and X-ray fluorescence (XRF), before and after the experiments, allowed interpretation of the dissolution and precipitation reactions by means of two-dimensional reactive transport calculations. The 2D model included an immobile zone (mortar grains) and a mobile zone (flowing water). The reactive transport model adequately reproduced the processes of portlandite dissolution and C-S-H dissolution and decalcification. The results proved the applicability of the previously obtained dissolution rate law of the C-S-H gel, although some uncertainties remain.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Research - Volume 81, March 2016, Pages 81-93
نویسندگان
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