کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10155348 | 1666348 | 2018 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The synthesis and hydration of ternesite, Ca5(SiO4)2SO4
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
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چکیده انگلیسی
The hydration and strength evolution of two multi-phase ternesite-based cements with 15 and 29â¯wt% ternesite are reported. The synthesis and hydration properties of single phase ternesite, nominally Ca5(SiO4)2SO4, are also reported including both chemically-pure ternesite and preparations doped with sodium, potassium, phosphorous, magnesium, manganese, strontium, zinc and titanium oxides. Hydration of the samples at 25â¯Â°C was studied by calorimetry and quantitative X-ray diffraction. Unconfined compressive strength development was determined for up to 1â¯year. Single-phase chemically activated ternesite hydrated rapidly at 25â¯Â°C achieved compressive strengths of â30 and â65â¯MPa at 28 and 90â¯days respectively, with C-S-H and gypsum as hydration products. The multi-phase ternesite-based cements reached 7â¯day strengths of â30â¯MPa. It is concluded that ternesite reacts with water, exhibiting strength gain. The future of calcium sulfoaluminate and sulfosilicate cements is discussed and it is suggested that a considerable, and as yet unrealised scope exists for simultaneously optimising cementing properties while lowering production costs and reducing CO2 emissions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Research - Volume 113, November 2018, Pages 27-40
Journal: Cement and Concrete Research - Volume 113, November 2018, Pages 27-40
نویسندگان
Solon Skalamprinos, Gabriel Jen, Isabel Galan, Mark Whittaker, Ammar Elhoweris, Fredrik Glasser,