کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6713601 | 1428732 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental study on mechanical and microstructural properties of cement-based paste for shotcrete use in high-temperature geothermal environment
ترجمه فارسی عنوان
بررسی تجربی بر خواص مکانیکی و میکرو سازه رب سیمان بر اساس استفاده از شاتکرت در محیط زمین گرمایی درجه حرارت
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کلمات کلیدی
محیط زمین گرمایی با درجه حرارت بالا، رب بر اساس سیمان برای استفاده از شیرتکرت، ویژگی های مکانیکی، ریز ساختار، خاکستر پرواز سیلیکا دود،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
In order to study the mechanical and microstructural properties of cement-based paste for shotcrete use in a high-temperature geothermal environment, the distinct environment was simulated in a laboratory where mechanical testing, thermogravimetric and differential thermal analyses, and scanning electron microscopy were conducted. Compared to the curing environment at 20â¯Â°C, the hydration state of the cement-based paste for shotcrete use was transformed to a state similar to that of cement-based paste for ordinary concrete within a shorter time, owing to the stimulation of the high-temperature geothermal environment. The cement-fly ash composite paste for shotcrete use cured in the high-temperature environment still exhibited lower strength in the early ages, yet slightly higher strengths at a 28-day age than pure cement-based paste. Furthermore, the strengths corresponding to each age of the cement-based paste co-doped with silica fume and fly ash increased more rapidly than those of the pure cement-based paste, particularly during the early ages. Therefore, considering the priority of rapid hardening and early strength, it is recommended to co-dope fly ash and silica fume into the shotcrete mixture in this environment.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 174, 20 June 2018, Pages 603-612
Journal: Construction and Building Materials - Volume 174, 20 June 2018, Pages 603-612
نویسندگان
Shengai Cui, Pin Liu, Jiao Su, Enqi Cui, Chen Guo, Bing Zhu,