کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6714241 | 1428735 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of calcined coal-series kaolin fineness on properties of cement paste and mortar
ترجمه فارسی عنوان
تأثیر ضخامت کائولن زغال سنگ کالیسیته بر ویژگی خواص سیمان و ملات
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
کائولن زغال سنگ کالیسیته، تناسب، خواص، سیمان، چسباندن و ملات،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
Three calcined coal-series kaolin (CCK) samples, with same chemical and mineral composition but different fineness (Blaine specific surface of 760, 1369 and 1856â¯m2/kg), were used as pozzolan in cement paste and mortar and the influence of their fineness on materials properties was systematically studied by several methods and analyses. The pozzolanic activity of CCK is evaluated by Frattini test and confirmed by mechanical properties of blended mortars. TG-DSC analysis, complemented with XRD analysis, determines the type and the amount of hydrated phases at different ages to evaluate the influence of fineness on hydration properties of blended paste. Finally the microstructure of blended paste containing finer particles is observed by FESEM analysis. The results show that the finer particles have higher pozzolanic activity, leading to the more consumption of Ca(OH)2 and the more production of additional C-S-H, C-A-H and C-A-S-H, which compact the paste and mortar texture and remarkably enhance the mechanical strength at later ages (after 7â¯days). The finer particles also have higher physical effect to accelerate the cement hydration and slightly increase mechanical strength, Ca(OH)2 content and combined water at earlier ages (before 7â¯days).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 171, 20 May 2018, Pages 558-565
Journal: Construction and Building Materials - Volume 171, 20 May 2018, Pages 558-565
نویسندگان
Yuanyuan Liu, Shaomin Lei, Min Lin, Zhangjie Xia, Zhenyu Pei, Bo Li,