کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6725341 503609 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characteristics of the carbonation resistance of recycled fine aggregate concrete
ترجمه فارسی عنوان
ویژگی های مقاومت به کربنات بتن خرد شده
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
This study investigates the effects of the minimum recycled fine aggregate (RFA) particle size, RFA amount, and fly ash addition on the carbonation resistance of RFA concrete (RFAC). The results reveal that the carbonation depth of RFAC increases with decreased minimum RFA particle size and increased RFA amount. At >40% RFA amount, water significantly affects RFAC carbonation. Fly ash addition favors the carbonation resistance of RFAC, especially at 20% cement replacement ratio. In this study, the self-cementing ability of RFA is proved by the microstructural analyses of RFA and RFAC but is found to have a negligible effect on RFAC carbonation for a few carbonizable hydrated products. The poor microstructure of RFAC and the interfacial zone between the new cement paste and RFA result in easier CO2 ingression for RFAC.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 49, December 2013, Pages 814-820
نویسندگان
, ,