کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7899805 | 1510355 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Marl-based geopolymers incorporated with limestone: A feasibility study
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
The expanding raw materials base is one of the drivers for the further development of inorganic binders, including alkali-activated cements. This research focuses on studying marl with a high calcite/aluminosilicates ratio as a geopolymer precursor, and limestone as a mineral addition to this geopolymer. The calcination of marl at 800â¯Â°C resulting in the formation of reactive Si, Al, and Ca due to the dehydroxylation of clay minerals and decarbonation of calcite makes marl suitable for use as a geopolymer precursor. Calcined marl activated with sodium silicate and cured at ambient temperature had a 28-day compressive strength of 34â¯MPa. When incorporated with 50% limestone, the compressive strength became 39.2â¯MPa. XRD, TG/DSC, FTIR, optical and SEM have been used to investigate the reaction products, as well as the microstructure of the geopolymer hardened pastes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 492, 15 July 2018, Pages 1-10
Journal: Journal of Non-Crystalline Solids - Volume 492, 15 July 2018, Pages 1-10
نویسندگان
Nailia R. Rakhimova, Ravil Z. Rakhimov, Vladimir P. Morozov, Albert R. Gaifullin, Ludmila I. Potapova, Alfiya M. Gubaidullina, Yury N. Osin,