Rheological properties of cemented gangue backfill material based on fractal characteristics of waste coal gangue

被引:0
作者
Xiaoli Ye
Yuxia Guo
Guorui Feng
Xiaoxuan Wang
Weiyang Hu
Jiahui Ma
机构
[1] Taiyuan University of Technology,College of Mining Engineering
[2] Shanxi Province Research Centre of Green Mining Engineering Technology,undefined
[3] Shanxi Province Coal-Based Resources Green and High-Efficiency Development Engineering Center,undefined
[4] Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering,undefined
来源
Environmental Science and Pollution Research | 2023年 / 30卷
关键词
Rheological properties; Coal gangue; Fractal dimension; Yield stress; Plastic viscosity; Compressible packing model (CPM);
D O I
暂无
中图分类号
学科分类号
摘要
The study herein was intended to evaluate the rheological properties of cemented gangue backfill material (CGBM). For this purpose, the rheological test of CGBM with fractal aggregate particle size distribution was carried out, and variations of static yield stress, dynamic yield stress, and plastic viscosity were investigated as a function of fractal dimension and time. The results reveal that aggregate particle size distribution exerts a significant influence upon the rheological properties of CGBM, and with the escalation of the fractal dimension of the aggregate, the yield stress and plastic viscosity initially decline and then increase. In addition, with elapsing time, the correlation between the static yield stress and the fractal dimension of CGBM specimens increases, while the correlations between the dynamic yield stress and the plastic viscosity and the fractal dimension decrease. The relationships between rheological parameters and fractal dimensions at different times are established based on the experimental results. The influence mechanism of aggregate particle size distribution on CGBM is analyzed from the perspective of the aggregate packing state. This study can provide a basis for the ratio design of CGBM in backfill mining.
引用
收藏
页码:48375 / 48388
页数:13
相关论文
共 202 条
[1]  
Baumert C(2020)Minimization of the influence of shear-induced particle migration in determining the rheological characteristics of self-compacting mortars and concretes Materials 13 1-11
[2]  
Garrecht H(2010)Nonlinear rheology of colloidal dispersions J Phys: Condens Matter 22 363101-79
[3]  
Brader J(2017)Influence of crushed aggregate fines with micro-proportioned particle size distributions on rheology of cement paste Cem Concr Compos 80 64-273
[4]  
Cepuritis R(2022)Impact compression properties of recycled tyre steel fiber reinforced concrete based on fractal theory Journal of Northeastern University (Natural Science) 43 266-1176
[5]  
Jacobsen S(2022)Resistance loss in cemented paste backfill pipelines: effect of inlet velocity, particle mass concentration, and particle size Materials 15 3339-189
[6]  
Smeplass S(2018)Grading characterization and yield stress prediction based on paste stability coefficient Chin J Eng 40 1168-109
[7]  
Mørtsell E(2002)Research on fractal characteristic of the size-distribution of concrete aggregates Journal of Southwest Jiaotong University 37 186-612
[8]  
Wigum BJ(2017)A practice of ultra-fine tailings disposal as filling material in a gold mine J Environ Manage 196 100-1079
[9]  
Ng S(2019)Bearing mechanism and stability monitoring of cemented gangue-fly ash backfill column with stirrups in partial backfill engineering Eng Struct 188 603-1572
[10]  
Chen M(2021)Rheological behavior and fresh properties of self-compacting high strength concrete containing recycled PP particles with fly ash and silica fume blended J Build Eng 34 101667-14