Optimal design and experimentation of full tailings and cementitious materials: a case study of a lead-zinc mine in China DOI Creative Commons
Jiang Guo,

Yanni Yu,

Jiachuang Wang

и другие.

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Ноя. 30, 2024

As mineral resources become increasingly scarce and environmental awareness grows, mining companies urgently need cost-effective environmentally friendly filling methods for mines. The use of ultrafine tailings combined with various binders at different ratios plays a key role in determining the rheological properties mechanical strength cemented paste backfill. This paper provides parameter basis design mine system, firstly, materials proportions were selected, basic physicochemical property tests, along cementitious material analysis, conducted to determine physical chemical composition materials. Next, properties, transport performance, bleeding characteristics slurry tested assess feasibility process requirements self-flow through pipelines. results indicated that transportation performance was better when gelling powder used as binder. Finally, compressive, shear, tensile strengths blocks under varying mass concentrations cement-tailings curing times. helped identify optimal concentration needed meet structure. final study found sample ratio 1:6, 68%, binder reached after 28 days. research offers valuable insights other seeking implement similar sustainable technologies, promoting wider adoption advancements field.

Язык: Английский

Experimental study on the dynamic mechanical properties of polypropylene fibre-reinforced coal gangue-cemented backfill DOI
Lijuan Su, Szu‐Yuan Wu,

Jiabao Yang

и другие.

Construction and Building Materials, Год журнала: 2025, Номер 459, С. 139843 - 139843

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

3

Carbonation curing of magnesium-coal slag solid waste backfill material: Study on properties of flow, mechanics and carbon sequestration DOI Creative Commons
Zhiyu Fang,

Yuheng Gao,

Wei He

и другие.

Case Studies in Construction Materials, Год журнала: 2024, Номер 20, С. e03204 - e03204

Опубликована: Апрель 24, 2024

To expedite the achievement of ''30-60 double carbon'' goal, it is imperative to create a novel, low-carbon, cost-effective, and sustainable backfill material for mining purposes. Against this background, paper investigates workability, carbonation performance carbon sequestration capacity coal gangue (CG), magnesium slag (MS) fly ash (FA) as solid waste material. The results study show that: (1) rheological properties CFM fresh slurry conform Herschel-Balkley (H-B) model, its flowability meets requirements mine transport. With increasing MS content, yield stress, apparent viscosity, thixotropy shear thickening increase, micro-slump diffusion diameter decrease. (2) Carbonation curing can effectively improve early UCS CFM. highest was 8.854 MPa after 7 days curing, which 27.84 times higher than that standard curing. In addition, increased with increase age content. (3) produces large number products such calcium carbonate makes microstructure denser. (4) absorb up 14.55% CO2 carbonation. (5) volume stability significantly improved summary, not only new type low-cost, low-carbon material, but practical application in field backfilling also has great potential realisation resource utilisation sequestration.

Язык: Английский

Процитировано

16

Experimental and numerical investigations on damage mechanical behaviors of surrounding rock-backfill composite under uniaxial compression DOI
Xiaolin Wang, Zefeng Li,

Jinping Guo

и другие.

Construction and Building Materials, Год журнала: 2024, Номер 417, С. 135210 - 135210

Опубликована: Фев. 1, 2024

Язык: Английский

Процитировано

15

Mechanical properties under triaxial compression of coal gangue-fly ash cemented backfill after cured at different temperatures DOI
Weizhen Liu, Zhongjing Hu, Chao Liu

и другие.

Construction and Building Materials, Год журнала: 2023, Номер 411, С. 134268 - 134268

Опубликована: Ноя. 25, 2023

Язык: Английский

Процитировано

18

Microstructural evolution and strengthening mechanism of aligned steel fiber cement-based tail backfills exposed to electromagnetic induction DOI
Xihao Li, Shuai Cao, Erol Yilmaz

и другие.

International Journal of Minerals Metallurgy and Materials, Год журнала: 2024, Номер 31(11), С. 2390 - 2403

Опубликована: Сен. 20, 2024

Язык: Английский

Процитировано

8

Mechanical response of stress damaged cemented tailings backfill based on pore structure and acoustic emission characteristics DOI
Xuepeng Song, Yuxin Hao

Construction and Building Materials, Год журнала: 2023, Номер 404, С. 133278 - 133278

Опубликована: Сен. 11, 2023

Язык: Английский

Процитировано

15

Effect of early damage on the mechanical properties, localized deformation and damage failure of cemented tailings backfill DOI
Zhuoran Liu, Botao Li, Qi Sun

и другие.

Construction and Building Materials, Год журнала: 2024, Номер 424, С. 135925 - 135925

Опубликована: Март 23, 2024

Язык: Английский

Процитировано

5

Effect of alkaline rice straw fibers content and curing ages on static mechanical properties of cemented lithium mica tailings backfill DOI Creative Commons

Pan Hong-ke,

Q.Z. Xiao,

Nanhui Huang

и другие.

Case Studies in Construction Materials, Год журнала: 2024, Номер 21, С. e03450 - e03450

Опубликована: Июль 1, 2024

Alkaline rice straw fibers (ARSF), as a widely available and recyclable plant fiber source, can provide new insights for improving the mechanical properties of backfill treatment agricultural waste resources research. Different amounts ARSF were prepared to enhance cemented lithium mica tailings (CLMTB), uniaxial compression strength (UCS) tests Brazilian splitting tensile conducted study influence on static CLMTB samples. Firstly, flowability mortars with different content was tested, results showed that decreased by maximum 5.4 %, which met construction requirements cement mortar in process. The UCS an increasing trend then reduced increased content, 0.15 % being optimal showing increase 14.2 %. Under loading conditions, gradually 0.60 content. samples exponential growth curing age. Additionally, there linear functional relationship between age experimental indicate improved toughness changed failure mode In meantime, it residual bearing capacity peak strain

Язык: Английский

Процитировано

5

Mechanical performance and damage mechanism of steel slag-cement pasted backfill under high-temperature cured and cyclic static loading DOI Creative Commons
Jianshuai Hao, Zihan Zhou, Zhonghui Chen

и другие.

Journal of Materials Research and Technology, Год журнала: 2025, Номер unknown

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

0

Compressive behaviour and mechanisms of supersulfated cement enhanced by biochar DOI

Ziye Kang,

Ning Li, Yilun Yang

и другие.

Composite Structures, Год журнала: 2025, Номер unknown, С. 119127 - 119127

Опубликована: Апрель 1, 2025

Язык: Английский

Процитировано

0