کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10285003 503551 2016 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ternary blends containing slag and interground/blended limestone: Hydration, strength, and pore structure
ترجمه فارسی عنوان
مخلوط های ترناری حاوی سرباره و آهک متقابل / متقابل: هیدراتاسیون، قدرت و ساختار منافذ
کلمات کلیدی
سرباره، سنگ آهک، سیمان بین زمینی، سیمان مخلوط، هیدراتاسیون، ساختار پوسته،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
The influence of high volume cement replacement using a combination of slag and limestone, on the hydration, reaction products and pore structure, and strength of cementitious systems is reported in this paper. Total replacement levels vary from 20% to 50% by volume. Slag is blended with: (i) Portland-limestone cement (PLC) that contains limestone interground with cement, or (ii) OPC and limestone of four different sizes in such a way that the resulting particle size distribution of the composite matches that of the corresponding PLC-based mixture. The hydration response of cement and cement-slag mixtures are found to be modified in the presence of limestone. It is observed from calorimetric and thermogravimetric analysis that a favorable slag-limestone synergy exists, that enables high volume replacement of cement without concomitant loss in properties. The early-age compressive strengths are beneficially impacted by the presence of limestone whereas the clinker factor does not play a significant role in later-age strengths in both the blended and interground systems. The study paves the way for development of multiple-material binders containing higher levels of cement replacement that demonstrate early and later age properties that are comparable to or better than that of traditional straight cement systems.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 102, Part 1, 15 January 2016, Pages 113-124
نویسندگان
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