The Dosage of Superplasticizer in Cemented Coal Waste Backfill Material Based on Response Surface Methodology
Joint Authors
Qi, Tingye
Feng, Guorui
Guo, Yuxia
Du, Xianjie
Wang, Zehua
Li, Qingdong
Li, Huayun
Source
Advances in Materials Science and Engineering
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-01-20
Country of Publication
Egypt
No. of Pages
8
Abstract EN
Cemented coal waste backfill material (CCWBM) is developed for backfilling the goaf in coal mines.
As fresh CCWBM slurry is generally transported into underground openings through a pipeline, the fluidity of fresh slurry becomes one of the most important properties.
Adding superplasticizer is considered to improve the flow performance of the slurry without alerting the mechanical performance of filling body.
The dosage of superplasticizer (SP) is related to filling cost, thus response surface methodology (RSM) is adopted to study the influence of material composition on SP when target slump is 250 mm.
The effects of fly ash content, fine gangue ratio, and mass concentration on SP are analyzed using the software of Design-Expert and central composite design (CCD), and models are established for SP.
Results show that the SP model coincides greatly with the test results and can be applied to analyze and predict SP in CCWBM.
Mass concentration, fly ash content, and fine gangue ratio influence SP from high to low.
The interaction of fine gangue ratio and mass concentration between SP is the most significant.
The fact that the improved aggregate space model can be applied to analyze the fluidity of CCWBM is proved too.
The research results provide guidance for the design and preparation of CCWBM with favourable performance and low cost in practical production.
American Psychological Association (APA)
Li, Qingdong& Feng, Guorui& Guo, Yuxia& Qi, Tingye& Du, Xianjie& Wang, Zehua…[et al.]. 2019. The Dosage of Superplasticizer in Cemented Coal Waste Backfill Material Based on Response Surface Methodology. Advances in Materials Science and Engineering،Vol. 2019, no. 2019, pp.1-8.
https://search.emarefa.net/detail/BIM-1120286
Modern Language Association (MLA)
Li, Qingdong…[et al.]. The Dosage of Superplasticizer in Cemented Coal Waste Backfill Material Based on Response Surface Methodology. Advances in Materials Science and Engineering No. 2019 (2019), pp.1-8.
https://search.emarefa.net/detail/BIM-1120286
American Medical Association (AMA)
Li, Qingdong& Feng, Guorui& Guo, Yuxia& Qi, Tingye& Du, Xianjie& Wang, Zehua…[et al.]. The Dosage of Superplasticizer in Cemented Coal Waste Backfill Material Based on Response Surface Methodology. Advances in Materials Science and Engineering. 2019. Vol. 2019, no. 2019, pp.1-8.
https://search.emarefa.net/detail/BIM-1120286
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1120286