کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1454931 989011 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of polymers on cement hydration: A case study using substituted PDADMA
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Effect of polymers on cement hydration: A case study using substituted PDADMA
چکیده انگلیسی

A study was carried out, using heat flow calorimetry and quantitative X-ray diffractometry, of the different influences which are exerted by types of cationic Polydiallyldimethylammonium (PDADMA) displaying different anionic counterions on the hydration behavior of an Ordinary Portland Cement (OPC). It was shown that the influence of the cationic polymer PDADMA on the hydration of the cement will tend to be strongly dependent on the nature of the anionic counterion. In case of OH−, more calcium sulfate will tend to be dissolved in the early stages, which acts in turn as an accelerator for the hydration of the C3S phase. In case of SO42- there will tend to occur a secondary gypsum precipitation, which will in turn act to lower the Ca2+ – content in the mix water, leading to a retardation of the hydration process compared to the hydration in absence of polymer.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Composites - Volume 35, Issue 1, January 2013, Pages 71–77
نویسندگان
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