Validating the Use of Slag Binder with 91 Percent Blast Furnace Slag for Mine Backfilling
Joint Authors
Yang, Xiaobing
Gao, Qian
Xiao, Bolin
Source
Advances in Materials Science and Engineering
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-09-30
Country of Publication
Egypt
No. of Pages
10
Abstract EN
The use of ground granulated blast furnace slag (GGBFS) is environmentally sustainable and prevalent in the cement industry, but the original alkali-activated slag binder cannot be used for mine backfilling.
Few reports have studied slag binders with high slag proportions (>90%) and low-cost activators (solid waste is used) that have higher performance than cement for backfilling.
To increase the utilization of slag in the mining industry, this work presents a new slag binder (SB) comprised of 91% slag powder and 9% activator (3% clinker, 5% desulfurized gypsum, and 1% mirabilite).
Its performance was evaluated by testing its strength, yield stress, and viscosity, which are three key properties for backfilling.
We also investigated its microstructure using SEM, XRD and thermogravimetric analysis (TG/DTG).
The results showed that the SB composites have a slightly lower early-age (<3 d) strength but a higher long-term strength (>28 d).
Although the SB backfilling composites had a twofold higher yield stress and nearly the same viscosity as Portland cement, the pressure drop in a pipe was only slightly higher through friction factor modeling.
The proposed SB may provide a sustainable binder for the mining industry with better performance and lower cost.
American Psychological Association (APA)
Yang, Xiaobing& Xiao, Bolin& Gao, Qian. 2020. Validating the Use of Slag Binder with 91 Percent Blast Furnace Slag for Mine Backfilling. Advances in Materials Science and Engineering،Vol. 2020, no. 2020, pp.1-10.
https://search.emarefa.net/detail/BIM-1128032
Modern Language Association (MLA)
Yang, Xiaobing…[et al.]. Validating the Use of Slag Binder with 91 Percent Blast Furnace Slag for Mine Backfilling. Advances in Materials Science and Engineering No. 2020 (2020), pp.1-10.
https://search.emarefa.net/detail/BIM-1128032
American Medical Association (AMA)
Yang, Xiaobing& Xiao, Bolin& Gao, Qian. Validating the Use of Slag Binder with 91 Percent Blast Furnace Slag for Mine Backfilling. Advances in Materials Science and Engineering. 2020. Vol. 2020, no. 2020, pp.1-10.
https://search.emarefa.net/detail/BIM-1128032
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1128032