Influence of Solid Content, Cement/Tailings Ratio, and Curing Time on Rheology and Strength of Cemented Tailings Backfill
Abstract
:1. Introduction
2. Materials and Methods
2.1. Characterization of Materials
2.1.1. Tailings
2.1.2. Binder and Mixing Water
2.2. CTB Sample Preparation
2.3. L-Shaped Tube Experiment
2.4. Unconfined Compressive Strength Testing
3. Results and Discussion
3.1. L-Shaped Tube Experiment Results
3.1.1. Rheological Properties of CTB Mixes
3.1.2. Pipeline Resistance
3.2. Uniaxial Compressive Strength Results of CTB Samples
3.2.1. Effect of Solid Content
3.2.2. Effect of Curing Time
3.3. Shrinkage Ratio Results and Analysis
4. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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d10 (μm) | d30 (μm) | d50 (μm) | d60 (μm) | dav (μm) | K0 |
---|---|---|---|---|---|
2.800 | 10.76 | 38.33 | 55.02 | 62.51 | 19.65 |
Source | Degree of Freedom | Sum of Squares | Mean Sum of Squares | F-Value | P-Value |
---|---|---|---|---|---|
c/t | 2.00 | 0.07 | 0.04 | 1.98 | 0.1569 |
SC | 2.00 | 6.70 | 3.35 | 189.57 | 0.0000 |
Flow rate | 3.00 | 3.21 | 1.07 | 60.46 | 0.0000 |
Error | 28.00 | 0.49 | 0.02 | 0.00 | 0.0000 |
c/t | SC (wt. %) | Shrinkage Ratio (%) | ||
---|---|---|---|---|
3 Days | 7 Days | 28 Days | ||
1:04 | 65 | 3.65 | 3.43 | 5.04 |
67 | 2.85 | 2.95 | 2.47 | |
69 | 2.48 | 2.71 | 4.35 | |
1:10 | 65 | 2.29 | 2.94 | 5.71 |
67 | 4.32 | 4.67 | 4.32 | |
69 | 2.94 | 3.17 | 5.04 | |
1:20 | 65 | 3.86 | 4.09 | 5.7 |
67 | 3.63 | 5.23 | 5.69 | |
69 | 3.88 | 2.25 | 5.01 |
Source | Degree of Freedom | Sum of Squares | Mean Sum of Squares | F-Value | p-Value |
---|---|---|---|---|---|
c/t | 2 | 4.96 | 2.48 | 3.68 | 0.0435 |
SC | 2 | 1.58 | 0.79 | 1.17 | 0.3301 |
CT | 2 | 12.00 | 6.00 | 8.91 | 0.0017 |
Error | 20 | 13.48 | 0.67 | 0.00 | 0.0000 |
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Li, J.; Yilmaz, E.; Cao, S. Influence of Solid Content, Cement/Tailings Ratio, and Curing Time on Rheology and Strength of Cemented Tailings Backfill. Minerals 2020, 10, 922. https://doi.org/10.3390/min10100922
Li J, Yilmaz E, Cao S. Influence of Solid Content, Cement/Tailings Ratio, and Curing Time on Rheology and Strength of Cemented Tailings Backfill. Minerals. 2020; 10(10):922. https://doi.org/10.3390/min10100922
Chicago/Turabian StyleLi, Jiajian, Erol Yilmaz, and Shuai Cao. 2020. "Influence of Solid Content, Cement/Tailings Ratio, and Curing Time on Rheology and Strength of Cemented Tailings Backfill" Minerals 10, no. 10: 922. https://doi.org/10.3390/min10100922