کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1454627 1509676 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterisation of ground hydrated Portland cement-based mortar as an additive to alkali-activated slag cement
ترجمه فارسی عنوان
خصوصیات ملات بر اساس پورتلند هیدرات شده به عنوان افزودنی برای سیمان سرباره فعال قلیایی
کلمات کلیدی
سرباره انفجار سرباره، سیمان فعال آلکیل، ملات سیمان باقی مانده، مدیریت زباله
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
چکیده انگلیسی

The sustainable development of cement manufacturing requires extension of the raw material base, including large-tonnage waste. Hydrated mortar waste is a promising mineral resource for the production of Portland cements and alternative binders, such as alkali-activated slag cement. The influences of ground-hydrated mortar aged for 3 months on the properties of alkali-activated slag fresh and hardened pastes were performed. The results show that the properties are dependent on the concentration (2.5–60%), cement:sand ratio (1:1–3) and fineness (200–600 m2/kg) of the ground hydrated mortar; the alkali activator (sodium carbonate and sodium silicate); and the curing conditions (normal conditions and steam curing). The fresh paste properties that we considered in this study included the water requirement and the setting time; the hardened paste properties we considered were the water absorption, the density, and the compressive strength after 2, 7, 14, 28, 180 and 360 days of ageing. The ground hydrated mortar improved the early strength and the long-term strength of the alkali-activated slag paste and replaced the slag up to 50%. The factors that affecting the strength of the alkali-activated slag cement with ground hydrated mortar as an additive were, in order of influence, alkali activator type > curing conditions > cement:sand ratio > ground-hydrated mortar fineness.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Composites - Volume 57, March 2015, Pages 55–63
نویسندگان
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