کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4913718 1428768 2017 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High strength sustainable concrete using silica nanoparticles
ترجمه فارسی عنوان
بتن پایدار با استفاده از نانوذرات سیلیکا
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
This study deals with the effect of silica nanoparticles (SNPs) in high volume fly ash (40% replacement) cement paste, mortar and concrete. The content of SNPs (0.5-3.0%) was added by the weight of binder and w/b ratio (0.23, 0.25 & 3.0) was optimized in paste and mortar system. The calorimetric results reveal that the hydration process was accelerated as a result of SNPs incorporation and the dormant period was shortening by 4 h with 2% SNPs as compared to the control. The effect of optimum dosages of SNPs addition on concrete in terms of mechanical and durability properties was studied at 0.25 w/b ratio. The compressive strength results of SNPs added mixtures showed an improvement of 61% at 3 days and 25% at 28 days of hydration as compared to control. The durability studies at 28 day showed that, with the incorporation of SNPs, the porosity, sorptivity and water absorption reduced up to 25-40% and densify the interfacial transition zone (ITZ).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 138, 1 May 2017, Pages 285-295
نویسندگان
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