کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5437155 1509732 2017 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of hexitols on the hydration of tricalcium silicate
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Effects of hexitols on the hydration of tricalcium silicate
چکیده انگلیسی
The hydration of tricalcium silicate (C3S) in presence of hexitols (d-glucitol, d-galactitol and d-mannitol) which only differ by their stereochemistry was followed by using calorimetric and conductometric measurements of the pastes and of the diluted suspensions respectively. Hexitols delay the acceleration of the growth of C-S-H and enhance the quantity of C-S-H when the maximum rate of C3S hydration is reached in relation to the stereochemistry of their hydroxyl groups: d-glucitol > d-galactitol > d-mannitol. Their relative retarding effect is shown to change depending on their sensitivity to calcium ions at pH found in cement paste. In diluted suspension in solutions representative to a cement paste, alditols are shown to retard C3S hydration whereas its dissolution is not limited suggesting an impact of the molecules on the precipitation of C-S-H.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Research - Volume 91, January 2017, Pages 87-96
نویسندگان
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