کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5436986 1509722 2017 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of hydration kinetics on properties of compositionally similar binders
ترجمه فارسی عنوان
اثر سینتیک هیدراتاسیون بر خواص ترکیب کننده های مشابه
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
چکیده انگلیسی
Four types of binders, based on the three different clinkers are investigated. These binders are of similar bulk chemical composition but contain different aluminate and silicate phases, which dissolve at different rates. The differences in reaction kinetics result in different phases assemblage at early ages. The phase assemblages tend to converge at later ages. Ettringite, AFm phases, C-S-H and strätlingite are the main hydrates. Their kinetics of formation and quantities depend on the dissolution rate of the anhydrous material. The differences in hydrates assemblage impact on the microstructures. Systems with ettringite or other crystalline hydrates as main hydration products at early ages, result in a coarser porosity. A refinement of the porosity is found in all the investigated samples with the ongoing formation of amorphous hydrates. Two mechanisms responsible for reduced hydration kinetics at later ages are identified: high Al concentration in the pore solution and dense microstructure.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Research - Volume 101, November 2017, Pages 13-24
نویسندگان
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