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
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 20 °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
نویسندگان
, , , , , ,