کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5437087 1509725 2017 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of pore structure on salt crystallization damage of cement-based materials: Consideration of w/b and nanoparticle use
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Effect of pore structure on salt crystallization damage of cement-based materials: Consideration of w/b and nanoparticle use
چکیده انگلیسی
In this study, the influence of pore structure on the extent of calcium nitrate salt crystallization damage on mortar samples was examined. The pore volume and structure was altered by varying water-to-binder ratio and by adding nanoparticles. The results show that calcium nitrate salt exposure induces cracking in mortar samples and that more damage was observed at higher water-to-binder ratio and higher rate of nanoparticle use. It is proposed that the refined pore structure induced by nanoparticle use can result higher salt crystallizing pressure. Thus, cementitious structures that are expected to be exposed to salt crystallization should be designed to meet strength needs by lowering water-to-binder ratio < 0.40. When using nanoparticles of the type examined here, limiting their use to rates of < 5% by mass of cement and use of water-to-binder ratio < 0.40 appears to be prudent.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Research - Volume 98, August 2017, Pages 61-70
نویسندگان
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