کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6713510 | 1428731 | 2018 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Increasing mechanical strength and acid resistance of geopolymers by incorporating different siliceous materials
ترجمه فارسی عنوان
افزایش مقاومت مکانیکی و مقاومت اسیدی ژئوپلیمرها با استفاده از مواد مختلف سلیسیم
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
This study, for the first time, reports using hollow glass microsphere waste (HGMW) and quartz powder (QP) to improve compressive strength and sulphuric acid resistance of fly ash/slag based geopolymers (AAFS), which is aimed for oil-gas well cementing and other uses where acid corrosion medium exists. Due to the lower reactivity of HGMW and QP compared to fly ash and slag, their incorporation needs a high temperature curing process (at 80â¯Â°C in this study) to obtain a certain extent of reaction. The resulting product with 5% HGMW and 5% QP exhibits higher compressive strength than the neat AAFS. After sulphuric exposure for 90â¯days, the high temperature cured samples show less susceptibility to the acid attack in comparison with those samples cured at room temperature and those without HGMW and QP. It is confirmed that better resistance of acid attack of the 80â¯Â°C cured mixture with addition of HGMW and QP than the neat AAFS mixture is due to the more crosslinked and compact microstructure. In addition, the volume stability of the geopolymer binders is also assessed and is found to be satisfying under both the ambient and high temperature conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 175, 30 June 2018, Pages 411-421
Journal: Construction and Building Materials - Volume 175, 30 June 2018, Pages 411-421
نویسندگان
Wei Zhang, Xiao Yao, Tao Yang, Cun Liu, Zuhua Zhang,