کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4918063 | 1428751 | 2017 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A study of high-performance slag-based composite admixtures
ترجمه فارسی عنوان
مطالعه عملکرد افزودنی های کامپوزیتی بر پایه عملکرد بالا
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کلمات کلیدی
سرباره کوره انفجار گرانول، سرباره فولاد، مخلوط، خون ریزی، انقباض خشک، استحکام،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
To promote the large-scale application of ground granulated blast furnace slag powder (GGBFS) in the cement and concrete industry, high-performance slag-based composite admixtures (SCAs) were prepared with GGBFS as the main raw material and converter steel slag powder (SS), limestone powder (LP) and fly ash (FA) as auxiliary raw materials. The effects of the fineness and content of each auxiliary raw material on the performance of the SCA were investigated. The experimental results showed that SS had multiple beneficial effects on mortar and concrete; it can increase the strength, reduce the bleeding and compensate for the shrinkage of the concrete. The best performance of medium- and low-strength concrete with a high SCA content was achieved using the SCA with the following composition: GGBFS: 64%; SS: 20%; LP: 6%; and FA: 10%. The fresh Portland cement (PC)Â +Â SCA concrete specimens had better fluidity and stability than the PCÂ +Â GGBFS concrete specimen, and the compressive strengths of the PCÂ +Â SCA concrete specimens were the same or slightly higher than that of the PCÂ +Â GGBFS concrete specimen. The results of scanning electron microscopy, X-ray photoelectron spectroscopy and pore size analysis showed that the concrete specimens prepared with PCÂ +Â SCA had significantly smaller and fewer large pores and a more uniform and dense interfacial structure than the concrete specimen prepared with PCÂ +Â GGBFS. The exceptional performance of SCAs results from the advantageous synergistic effects of GGBFS and SS.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 155, 30 November 2017, Pages 126-136
Journal: Construction and Building Materials - Volume 155, 30 November 2017, Pages 126-136
نویسندگان
Zaibo Li, Xuguang Zhao, Tusheng He, Sanyin Zhao, Yang Liu, Xiaoling Qu,