کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1454393 1509666 2016 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of particle size and slag content on the early hydration of interground blended cements
ترجمه فارسی عنوان
تأثیر اندازه ذرات و مقدار سرباره در هیدراسیون اولیه سیمان مخلوط بین زمین
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
چکیده انگلیسی

Three blended cements prepared by intergrinding 6–35% slag with clinker and gypsum, and a control portland cement, were sieved to yield 0–10 μm, 10–30 μm, 30–50 μm, and >50 μm subgroups. Clinker/slag/gypsum contents, and oxide compositions of the subgroups differed significantly from the unsieved cements. Fine subgroups always contained more gypsum and had lower slag-to-clinker ratios than coarse subgroups. Heat evolution was investigated up to 48 h using isothermal calorimetry. Contribution of slag to early heat evolution was limited. 0–10 μm particles evolved up to 5–10% of their heat in the first 30 min. Particle size affected the peak rate of heat evolution but not its timing. A linear relationship was observed between heat evolved from 0 to 24 h and from 24 h to 48 h. Median size or slag content of subgroups affected the positions of data points on this line. Heat evolved up to 24 h (or 48 h) was found to be closely related to particle size. Rate of heat development does not appear to be strongly influenced by particle size above ∼30 μm.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Composites - Volume 67, March 2016, Pages 39–49
نویسندگان
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