کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6721115 | 503569 | 2015 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influences of nano-TiO2 on the properties of cement-based materials: Hydration and drying shrinkage
ترجمه فارسی عنوان
تأثیر نانو تیتانیم بر خواص مواد سیمان: انقباض هیدراتاسیون و خشک شدن
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
To better understand the influences of nano-TiO2 on the properties of cement-based materials, the hydration process, the compressive strength development, and the drying shrinkage of cement-based materials with the addition of nano-TiO2 of 25Â nm were investigated. Results showed that nano-TiO2 increased the compressive strength of cement mortar through its acceleration on cement hydration and the pore-refining effect: 5Â wt.% nano-TiO2 accelerated cement hydration process for 2Â h and reduced the most probable pore size by 19.4%, 48.5%, and 54.4%, respectively. In addition, the influences of the hydrophilicity of nano-TiO2 on the water loss and volume stability of hardened cement pastes were primarily investigated and discussed in this work. For a comparison study, nano-SiO2 of 30Â nm size was also used. Results showed that the decline of the contact angle and the refining of pore structure with the addition of nano-TiO2 slowed down the water loss of hardened cement paste, which resulted in a comparable drying shrinkage to that of the control sample at 1Â month age.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 81, 15 April 2015, Pages 35-41
Journal: Construction and Building Materials - Volume 81, 15 April 2015, Pages 35-41
نویسندگان
Rui Zhang, Xin Cheng, Pengkun Hou, Zhengmao Ye,