کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4913496 1428767 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dispersing performance of superplasticizers admixed to aged cement
ترجمه فارسی عنوان
عملکرد پراکنده از سولفات پراکسیدکرها به سمان سالم
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
A mechanistic study using fresh and aged binary mixtures of C3A (cubic and orthorhombic) and gypsum revealed that the interaction and hence dispersing performance of superplasticizers in aged cement is controlled by two competing processes, one being agglomeration and caking of the binder particles resulting in a decreased specific surface area, and the other process being continuous formation of hydration products, especially of ettringite, which leads to an increase of surface area. The results suggest that the interaction of superplasticizers with aged cement can be positive or negative, depending on the composition of the cement relative to C3A, with negative effects being most prevalent.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 139, 15 May 2017, Pages 232-240
نویسندگان
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