Effect of 3D-printed polymer with negative Poisson's ratio structure on the mechanical characteristics of cemented tailings backfill
Source abstract
Abstract
In underground mining environments, the structural instability of cemented tailings backfill (CTB), primarily attributed to brittle fracture behavior, represents a critical safety concern. This research utilized 3D-printed negative Poisson's ratio structural (monomeric, combined, and nested configurations) polymers to improve the brittle fracture resistance of CTB. Uniaxial compression tests, acoustic emission, and scanning electron microscopy were conducted to systematically evaluate the influence of negative Poisson's ratio polymers with different structures on the strength, toughness, stress-strain response, internal damage processes, and microstructural characteristics of CTB. Experimental results showed that using the monomeric configuration negative Poisson's ratio polymer in CTB slightly reduced its strength, while combined and nested configurations increased strength by 27.01 % and 30.66 %, respectively. The post-peak load-carrying capacity and toughness of polymer-reinforced CTB were improved. Specimens reinforced with combined and nested configurations of negative Poisson's ratio structural polymers exhibited superior energy absorption capacity and better internal damage evolution mechanisms, enabling synergistic enhancement of strength and toughness. The cracks in normal CTB were tensile, whereas the cracks in polymer-reinforced CTB were mainly a combination of tensile and shear cracks. The strengthened specimens demonstrated a decreased cumulative number of acoustic emission events and a postponed occurrence of macroscopic crack propagation. The polymer lattice and matrix achieve stress transfer through mechanical interlocking, but microporosity defects in both materials and the weakening effect of polymer doping on matrix integrity together restrict the composites' mechanical properties. This study not only proposes an innovative approach to address the brittle fracture issue of CTB in underground mining environments, but also significantly enhances mining safety while advancing sustainable development within the industry.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Tailings Management and Properties · Advanced materials and composites · Rock Mechanics and Modeling
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (63)
Show source-provided references
1. Advancing sustainable and circular mining through solid-liquid recovery of mine tailings10.1016/j.psep.2024.06.086 ↗
2. Mechanical properties of organic-inorganic hybrid fiber reinforced cemented tailings backfill considering energy evolution and damage fracture characteristics
3. Disposal of solid waste as building materials: a study on the mechanical and durability performance of concrete composed of gold tailings10.1016/j.jmrt.2024.03.191 ↗
4. A quantitative assessment of vulnerability using social-economic-natural compound ecosystem framework in coal mining cities10.1016/j.jclepro.2020.120969 ↗
5. Effects of curing and stress conditions on hydromechanical, geotechnical and geochemical properties of cemented paste backfill10.1016/j.enggeo.2013.10.024 ↗
6. Effect of super-high water materials backfilling on stress decrease and energy release during strip coal pillar mining: a case study10.1016/j.heliyon.2024.e37441 ↗
7. Behavior of backfill material made of high-water material and recycled concrete lumps for highwall mining
8. Experimental and mechanistic research on modifying the mechanic properties of the high water backfill material by electrochemical treatment10.1038/s41598-020-74115-8 ↗
9. Experimental study on the dynamic mechanical properties of polypropylene fibre-reinforced coal gangue-cemented backfill10.1016/j.conbuildmat.2024.139843 ↗
10. Effect of composite alkali activator proportion on macroscopic and microscopic properties of gangue cemented rockfill: experiments and molecular dynamic modelling10.1007/s12613-025-3140-8 ↗
11. Experimental investigation on the mixture optimization and failure mechanism of cemented backfill with coal gangue and fly ash10.1016/j.powtec.2024.119751 ↗
12. Preparation of alkali-activated nickel slag-based cemented tailings backfill: Workability, strength characteristics, localized deformation and hydration mechanism10.1016/j.conbuildmat.2023.134639 ↗
13. Improvement of cemented rockfill by premixing low-alkalinity activator and fly ash for recycling gangue and partially replacing cement10.1016/j.cemconcomp.2023.105345 ↗
14. A comparative study on the workability, mechanical properties and microstructure of cemented fine tailings backfill with different binder10.1016/j.conbuildmat.2024.139189 ↗
15. Crack resistance of cemented waste rock tailings backfill under splitting tensile load: Experimental and numerical investigations
16. Impacts of two alkanolamines on crystallization and morphology of calcium hydroxide10.1016/j.cemconres.2020.106250 ↗
17. Preparation of self-consolidating cemented backfill with tailings and alkali activated slurry: Performance evaluation and environmental impact10.1016/j.conbuildmat.2024.137088 ↗
18. Review of the backfill materials in Chinese underground coal mining10.3390/min13040473 ↗
19. Basic theory of constructional backfill mining and the underground space utilization concept
20. Optimization of flocculation and settling parameters of tailings slurry by response surface methodology10.1016/j.mineng.2020.106488 ↗
21. Modification of in-situ polymerization of acrylamide and synergies with fiber in enhancing cement-based composite
22. Study on the strength characteristics and failure characteristics of the composite load-bearing structure in the cemented filling field10.1016/j.conbuildmat.2022.127242 ↗
23. A review of underground mine backfilling methods with emphasis on cemented paste backfill
24. Investigation of the dynamic mechanical properties and damage mechanisms of fiber-reinforced cemented tailing backfill under triaxial split-Hopkinson pressure bar testing10.1016/j.jmrt.2023.09.236 ↗
25. Nanostructure of calcium-silicate-hydrates in fine recycled aggregate concrete10.1016/j.cemconcomp.2020.103827 ↗
26. Effect of particle gradation on properties of fresh and hardened cemented paste backfill10.1016/j.conbuildmat.2015.08.057 ↗
27. Effects of carbon nanotube dosage and aggregate size distribution on mechanical property and microstructure of cemented rockfill10.1016/j.cemconcomp.2022.104408 ↗
28. A binder prepared by low-reactivity blast furnace slags for cemented paste backfill: Influence of super-fine fly ash and chemical additives10.1016/j.conbuildmat.2022.126988 ↗
29. Exploring macroscopic and microscopic impacts of alcohol amine modified with water-reducing agent on cementitious material and its application10.1016/j.conbuildmat.2023.134816 ↗
30. Reinforcement mechanisms of cellulose nanofibers on cemented rockfill: Macroscopic, microscopic and molecular insights10.1016/j.conbuildmat.2025.140192 ↗
31. Enhancement behaviours of carbon nanotubes reinforced cement based grouting materials under dynamic loading
32. Nano-SiO2 coating and silane modified bamboo cellulose nanofibers for alkali-activated slag mortar with recycled aggregate: Performance enhancement and mechanism10.1016/j.conbuildmat.2024.139703 ↗
33. Microscopic mechanism of cellulose nanofibers modified cemented gangue backfill materials10.1007/s42114-025-01270-9 ↗
34. Experimental investigation on some performance of rubber fiber modified cemented paste backfill10.1016/j.conbuildmat.2020.121586 ↗
35. Fiber type effect on strength, toughness and microstructure of early age cemented tailings backfill10.1016/j.conbuildmat.2019.06.221 ↗
36. Steel fibre reinforced alkali-activated geopolymer concrete slabs subjected to natural gas explosion in buried utility tunnel10.1016/j.conbuildmat.2020.118447 ↗
37. Development of ultra-high performance geopolymer concrete (UHPGC): Influence of steel fiber on mechanical properties
38. Mechanism study of crack propagation in river sand Engineered Cementitious Composites (ECC)10.1016/j.cemconcomp.2022.104434 ↗
39. Additive manufacturing of polymer composites: Processing and modeling approaches10.1016/j.compositesb.2019.04.029 ↗
40. Upcycling of waste polyolefins in natural fiber and sustainable filler-based biocomposites: A study on recent developments and future perspectives10.1016/j.compositesb.2023.110852 ↗
41. 3D printed origami honeycombs with tailored out-of-plane energy absorption behavior10.1016/j.matdes.2020.108930 ↗
42. Polyvinyl alcohol reinforced with crystalline nanocellulose for 3D printing application10.1016/j.mtcomm.2018.02.007 ↗
43. Effect of 3D printed skeleton shapes on strength behavior, stress evolution and microstructural response of cement-based tailings backfills
44. Polymer shape effect on damage evolution, internal defects and crack propagation of 3D-printed polymer-based cementitious backfill10.1016/j.conbuildmat.2023.133386 ↗
45. Enhancing flexural property and mesoscopic mechanism of cementitious tailings backfill fabricated with 3D-printed polymers10.1016/j.conbuildmat.2024.135009 ↗
46. Static and dynamic compressive behaviour of 3D printed auxetic lattice reinforced ultra-high performance concrete10.1016/j.cemconcomp.2023.105046 ↗
47. A novel re-entrant auxetic honeycomb with enhanced in-plane impact resistance10.1016/j.compstruct.2018.10.024 ↗
48. Deformation behaviors and energy absorption characteristics of a hollow re-entrant auxetic lattice metamaterial10.1016/j.ast.2023.108583 ↗
49. Advanced honeycomb designs for improving mechanical properties: A review10.1016/j.compositesb.2021.109393 ↗
50. 4D printed chiral metamaterials with negative swelling behavior10.1088/1361-665X/aca84d ↗
51. Evaluating the use of harvested fly ashharvested fly ash as a sustainable alternative in cementitious mixtures10.1016/j.conbuildmat.2024.138138 ↗
52. Internal pore evolution and early hydration characterization of fly ash cement backfill
53. Long-term mechanical behavior and characteristics of cemented tailings backfill through impact loading10.1007/s12613-019-1878-6 ↗
54. Efficient hydrosilylation reaction in polymer blending: An original approach to structure PA12/PDMS blends at multiscales10.1016/j.polymer.2017.01.039 ↗
55. Mechanical behavior, failure pattern and damage evolution of fiber-reinforced cemented sulfur tailings backfill under uniaxial loading10.1016/j.conbuildmat.2022.127248 ↗
56. Influence of the availability of calcium hydroxide, sulphates, and alkalis on hydration of supplementary cementitious materials10.1016/j.cemconres.2023.107388 ↗
57. Mitigation of efflorescence of alkali-activated slag mortars by incorporating calcium hydroxide10.1016/j.conbuildmat.2021.123873 ↗
58. Static and dynamic compressive behaviour of 3D printed auxetic lattice reinforced ultra-high performance concrete10.1016/j.cemconcomp.2023.105046 ↗
59. Preparation and compressive properties of cementitious composites reinforced by 3D printed cellular structures with a negative Poisson's ratio
60. Research on the mechanical properties of 3D printing polymer reinforced cemented tailings backfill under uniaxial compression10.1007/s10706-022-02091-z ↗
61. The effect of size on the mechanical properties of 3D-printed polymers10.3390/su16010356 ↗
62. Influence of shell ash on pore structure and mechanical characteristics of cemented tailings backfill10.1016/j.conbuildmat.2023.134473 ↗
63. Astm, C. (1997). Standard test method for flexural toughness and first-crack strength of fiber-reinforced concrete (using beam with third-point loading). C-1018.