کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7884674 | 1509715 | 2018 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Impact of gamma-ray irradiation on hardened white Portland cement pastes exposed to atmosphere
ترجمه فارسی عنوان
تاثیر تابش اشعه گاما بر پاستای سیمان پرتلند سفیدی که در معرض جو قرار دارند
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
چکیده انگلیسی
Samples of matured hardened cement paste were exposed to an environment with gamma-ray irradiation, which induces a natural carbonation process. After a dose of approximately 5â¯Ãâ¯104â¯kGy, the physical properties, microstructure, and phase composition of the irradiated hardened cement paste samples are compared with those of reference samples exposed to an identical environment without gamma-ray irradiation. Experiments confirm that aragonite and vaterite are preferentially formed under irradiation and that the bending strength is dramatically increased after gamma-ray irradiation. Based on field-emission scanning electron microscopy observations, X-ray scattering profiles, and water vapor sorption isotherm data, it is concluded that vaterite formed on C-S-H plays a role in strengthening the structure of C-S-H via pseudomorphs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Research - Volume 108, June 2018, Pages 59-71
Journal: Cement and Concrete Research - Volume 108, June 2018, Pages 59-71
نویسندگان
Ippei Maruyama, Shunsuke Ishikawa, Junichi Yasukouchi, Shohei Sawada, Ryo Kurihara, Masayuki Takizawa, Osamu Kontani,