Mechanical properties and damage evolution characteristics of waste tire steel fiber-modified cemented paste backfill

Cao, Shenggen; Che, Chiyuan; Zhang, Yun; Shan, Changhao; Liu, Yang; Zhao, Changzheng; Du, Shuyu

doi:10.1016/j.ijmst.2024.07.007

International Journal of Mining Science and Technology

2024

DOI: 10.1016/j.ijmst.2024.07.007

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Mechanical properties and damage evolution characteristics of waste tire steel fiber-modified cemented paste backfill

Shenggen Cao,

Chiyuan Che,

Yun Zhang

et al.

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2024

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Cited by 3 publications

References 33 publications

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A feasibility study on using tire-recycled steel fibers to enhance the toughness of constructional backfill body

Che,

Cao,

Zhang

et al. 2024

Structures

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A feasibility study on using tire-recycled steel fibers to enhance the toughness of constructional backfill body

Che,

Cao,

Zhang

et al. 2024

Structures

View full text Add to dashboard Cite

Mechanical characteristics and constitutive model of cemented tailings backfill under temperature-time effects

Zhang,

Guo,

Taheri

et al. 2024

Journal of Building Engineering

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Comparison of Different Additives and Ages on Mechanical and Acoustic Behavior of Coal Gangue Cemented Composite

Xiao

2024

Applied Sciences

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Cemented backfill represents a significant trend in mine filling methods; however, it often exhibits high brittleness and limited resistance to failure, which can restrict its practical application. This study investigates the mechanical properties and damage evolution of fiber-reinforced coal gangue cemented materials (CGCMs) at various curing times using uniaxial compressive tests, acoustic emission (AE) analysis, and scanning electron microscopy (SEM). Specimens were created with different fillers, including carbon fibers (CFs), steel fibers (SFs), and carbon black (CB), and subjected to uniaxial compression until failure. Control specimens without fillers were also tested for comparison. The microstructure of the specimens was examined using scanning electron microscopy (SEM). The findings indicate that (1) the compressive strength of filler-reinforced CGCMs increases between 7 and 14 days of curing but decreases thereafter, with CB significantly improving early-age strength; (2) specimens reinforced with CFs and SFs exhibit significantly enhanced toughness in their post-cracking response; (3) AE events during specific stages can effectively identify the reinforcing effects of CFs and SFs; (4) the presence of fillers improves resistance to shear cracks, with CFs and SFs being more effective than CB; and (5) adding CB results in a denser and more stable hydration product structure, while CFs and SFs lead to a more porous structure with increased cracking.

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Mechanical properties and damage evolution characteristics of waste tire steel fiber-modified cemented paste backfill

Cited by 3 publications

References 33 publications

A feasibility study on using tire-recycled steel fibers to enhance the toughness of constructional backfill body

A feasibility study on using tire-recycled steel fibers to enhance the toughness of constructional backfill body

Mechanical characteristics and constitutive model of cemented tailings backfill under temperature-time effects

Comparison of Different Additives and Ages on Mechanical and Acoustic Behavior of Coal Gangue Cemented Composite

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