کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6724319 503607 2014 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of nano-Al2O3 on early-age microstructural properties of cement paste
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Effects of nano-Al2O3 on early-age microstructural properties of cement paste
چکیده انگلیسی
The effects of nano-Al2O3 addition on the early-age microstructural properties of cement paste is reported in this paper. The study was limited to evaluation of properties of cement paste hydrated up to an age of 7 days. Ordinary Portland cement was replaced by nano-Al2O3 powder at 2% and 4% by weight. The water-binder ratio was fixed at 0.4. No changes were noticed in the early-age compressive strength with nano-Al2O3 addition. XRD analysis confirmed that no new phase developed due to the addition of nano-Al2O3 powder. However, FTIR analysis shows a shift in water associated band to lower frequency mostly with 4% nano-Al2O3 addition. Scanning electron microscopy reveals the formation of much dense microstructure with larger crystals of portlandite within the cement matrix.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 52, 15 February 2014, Pages 189-193
نویسندگان
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