کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5437181 | 1509727 | 2017 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On the influence of Mg/P ratio on the properties and durability of magnesium potassium phosphate cement pastes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This paper investigates the influence of magnesium to phosphate molar ratio (Mg/P) on the properties of magnesium phosphate cement pastes (MPPC). The aim of the present study is to investigate the durability of these materials. The results show that excess potassium dihydrogen phosphate (KH2PO4) has a negative impact on overall properties. High quantities of KH2PO4 lead to poor water resistance, as the anhydrous phosphate remained unreacted in the microstructure is highly soluble and generates important values of open porosity when samples are immersed in water. Another drawback to excess KH2PO4 is the appearance of an efflorescence phenomenon, confirmed by XRD analysis. Finally, samples having a high Mg/P molar ratio show important swelling, especially when water is present in the system (autogenous conditions).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Research - Volume 96, June 2017, Pages 27-41
Journal: Cement and Concrete Research - Volume 96, June 2017, Pages 27-41
نویسندگان
Mathieu Le Rouzic, Thierry Chaussadent, Lavinia Stefan, Mickaël Saillio,