Impact Energy Absorption Behavior of Cemented Coal Gangue-Fly Ash Backfill

Wu, Di; Liu, Yucheng; Zheng, Zhixue; Wang, Song

doi:10.1007/s10706-015-9958-5

Cited by 10 publications

(2 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a type of construction material, cementitious composites are commonly subjected to complex field loading conditions during their service life (Cui and Fall, 2015;Wu et al, 2016;Lin et al, 2020;Xu et al, 2020). As a result, the external loadings may cause the development of compressive, tensile and/or shear stresses in the porous mixture and thus dominate the failure processes at the macroscale (Xu et al, 2019;Libos and Cui, 2020;Liu et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Multiscale Geomechanical Behavior of Fiber-Reinforced Cementitious Composites Under Cyclic Loading Conditions—A Review

McLean

Cui

2021

Front. Mater.

View full text Add to dashboard Cite

As construction materials, cementitious composites such as cemented paste backfill (CPB), cemented soil, and concrete may be subjected to extreme dynamic loadings including impact, blast, and/or seismic loads during their service life. To improve mechanical performance under dynamic loadings, fiber reinforcement technique has been considered a promising approach and extensively used in practice. In this manuscript, a new perspective on the multiscale geomechanical behavior of fiber-reinforced cementitious composites (FRCC) is provided through a comprehensive review on the macroscale constitutive behavior and the associated mechanical properties, and microscale failure processes under cyclic tensile, shear, and compressive loading conditions. For the macroscale mechanical response, this review includes a detailed analysis of the state-of-the-art research in stress-strain behaviors including pre- and post-peak response and hysteretic behaviors. Moreover, the effects of pore water pressure on the dynamic response of soft FRCCs such as CPB are discussed. Furthermore, the link between microscale crack propagation (including the formation of the interfacial transition zone and fracture process zone) and damage accumulation is established for each type of cyclic loading condition. In addition, a critical discussion on the future development of fiber reinforcement is conducted as well. Therefore, this review not only offers guidance and references to the experimental investigation on the multiscale behavior of FRCCs under cyclic loadings, but also promotes the further development of fiber reinforcement techniques.

show abstract

Section: Introductionmentioning

confidence: 99%

Multiscale Geomechanical Behavior of Fiber-Reinforced Cementitious Composites Under Cyclic Loading Conditions—A Review

McLean

Cui

2021

Front. Mater.

View full text Add to dashboard Cite

show abstract

“…Okubo et al conducted large-scale penetration tests of rock samples using a wedgetype drop hammer in 1997 [14]. In the recent years, drop weight machine has been used to study the dynamic fracture characteristic of rock and relationship between the impact energy, rock strength, and so forth [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Sedimentary Rock’s Dynamic Characteristics under Creep State Using a New Type of Testing Equipment

Huang

Chen

et al. 2017

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

Under high stress, rock in the creep state is vulnerable to external impact load, causing the irreversible perturbation deformation of rock or even sudden failure. To explore the dynamic characteristics of sedimentary rock in the creep state, a siltstone specimen was experimentally studied using a new type of experimental system for rock creep perturbation. Compared to the currently available equipment for studying rock dynamics, this new type of experimental system provides a long-term and stable high static stress to maintain the creep state of rock specimen. This is independent of power supply because it provides static stress by gravity load. Moreover, the equipment provides a dynamic impact load through the free fall of impact weights. This study shows that the perturbation deformation of sedimentary rock increased in two stages: decay phase and sustained development phase. When the static stress reached up to ∼85% of the rock's ultimate strength and the axial strain reached up to 80% of the ultimate failure strain, the rock became sensitive to impact load. This static stress level is basically the same as its long-term strength. With increasing impact strength, the increment curve of the rock creep perturbation deformation was transformed from the decay phase to the sustained development phase in advance, making the rock sensitive to external perturbation at a low static loading stress level.

show abstract

Numerical Research on Energy Evolution and Burst Behavior of Unloading Coal–Rock Composite Structures

Yin

Tan

et al. 2018

Geotech Geol Eng

View full text Add to dashboard Cite

Impact Energy Absorption Behavior of Cemented Coal Gangue-Fly Ash Backfill

Cited by 10 publications

References 6 publications

Multiscale Geomechanical Behavior of Fiber-Reinforced Cementitious Composites Under Cyclic Loading Conditions—A Review

Multiscale Geomechanical Behavior of Fiber-Reinforced Cementitious Composites Under Cyclic Loading Conditions—A Review

Experimental Study on Sedimentary Rock’s Dynamic Characteristics under Creep State Using a New Type of Testing Equipment

Numerical Research on Energy Evolution and Burst Behavior of Unloading Coal–Rock Composite Structures

Contact Info

Product

Resources

About