کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7884577 | 1509714 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Evolution of the binder gel in carbonation-cured Portland cement in an acidic medium
ترجمه فارسی عنوان
تکامل ژل اتصال دهنده در سیمان پورتلند از طریق کربناته در محیط اسیدی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
چکیده انگلیسی
The present study investigated the evolution of a binder gel in carbonation-cured Portland cement in an acidic medium. Three types of Portland cement with varying chemical compositions were carbonation-cured and exposed to H2SO4 or HCl. An acid attack induced significant changes in the local environment of Al in normally cured cement showing the formation of ettringite and Friedel's salt, while the local environment of Al in carbonation-cured cement mainly consisted of a tetrahedral aluminate structure and showed much less structural alteration. A thermal analysis showed that the carbonation products of belite were more stable than those of alite, with less gypsum formation under H2SO4 in the cement with relatively more belite. Depolymerization of the carbonation product, Ca-modified silicate gel, was observed in the samples immersed in acid.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Research - Volume 109, July 2018, Pages 81-89
Journal: Cement and Concrete Research - Volume 109, July 2018, Pages 81-89
نویسندگان
J.H. Seo, S.M. Park, H.K. Lee,