Analysis of the vibration alleviation of a new railway sub-ballast layer with waste tyre rubber

Signes, Carlos Hidalgo; Fernández, Pablo Martínez; Perallón, Elías Medel; Franco, Ricardo Insa

doi:10.1617/s11527-016-0951-0

Cited by 10 publications

(4 citation statements)

References 11 publications

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“…Senetakis et al [38] reported that the maximum damping ratio of pure sand is less than 10%, whereas the corresponding value is up to 15% for sand-tire shred mixtures. Because of its high energy dissipation capacity, this mixture has been used in other engineering applications such as railway sub-ballast layers [39,40] and geotechnical seismic isolation [41][42][43]. Xiong and Li [44] showed that geotechnical seismic isolation could effectively mitigate seismic hazards.…”

Section: Introductionmentioning

confidence: 99%

Sand–Tire Shred Mixture Performance in Controlling Surface Explosion Hazards That Affect Underground Structures

et al. 2021

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Blasting is an unavoidable activity in geotechnical engineering, road and tunnel construction, and mining and quarrying. However, this activity can expose the environment to various hazards that are challenging to control and, at the same time, critical for the safety of site workers, equipment, and surrounding structures. This research aims to evaluate the ability of sand–tire shred mixtures to reduce peak blast pressure, which is the leading cause of damage to underground structures under surface explosion. ABAQUS software is used to model the material behavior under explosion and is validated using the results of previous studies and an empirical equation. Different scenarios are created by using mixture layers with different thicknesses (2, 4, and 6 m) and tire shred contents (10%, 20%, and 30%) that are subjected to various surface explosion charges (100, 500, 1000, and 5000 kg). The thickness of the mixture layer is found to be directly related to the dissipation of explosion energy. However, the percentage of the rubber content in the mixture is only significant in reducing peak blast pressure when a thick enough mixture layer is used. The results confirm the adequate performance of the correctly chosen sand–tire shred mixtures in reducing peak blast pressure and protecting the underground structure from surface explosion hazards.

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Section: Introductionmentioning

confidence: 99%

Sand–Tire Shred Mixture Performance in Controlling Surface Explosion Hazards That Affect Underground Structures

et al. 2021

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“…Towards these limitations, the reuse of waste rubber in ballast bed is proposed as a solution, but few studies on this have been performed. This topic is necessary and worthwhile to study because it can reduce the ballast degradation [10,11], absorb noises [12][13][14] and dispose waste rubber (low costs). However, due to the limited numbers of research, the studies did not always reach the same conclusion.…”

Section: Introductionmentioning

confidence: 99%

“…Besides the optimal percentage, another research gap is the effects of the CR size on the ballast degradation reduction. Some of earlier studies utilised the same Particle Size Distribution (PSD) as the ballast [11,15], while most of the other studies utilised smaller rubber sizes under 20 mm [10,12,16]. Even though the studies proved the addition of the CR can reduce ballast degradation and absorb the vibration, the results can be more reliable and useful when the rubber size is confirmed.…”

Section: Introductionmentioning

confidence: 99%

Effects of crumb rubber size and percentage on degradation reduction of railway ballast

Guo

Markine

Qiang

et al. 2019

Construction and Building Materials

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Higher speed, more freight and frequent maintenance increase ballast degradation and reduce the ballast lifespan. To reduce ballast degradation, crumb rubber used as buffering aggregates in ballast bed is relatively unexplored and needs more studies, because using it has the advantage of reusing the waster rubber and absorbing the noises. The effects of crumb rubber (CR) size and percentage on ballast degradation reduction is studied in this paper, and the optimal CR size and percentage are proposed. Three CR size ranges are utilised, i.e., 3~5 mm, 10~15 mm and 20~25 mm, and the percentages are 0, 10, 20 and 30% by weight. Three kinds of ballast material with two size ranges are utilised. The deteriorated ballast particles were generated using Los Angeles Abrasion (LAA) tests, and the ballast degradation was evaluated with the 3D image analysis. The results indicate that ballast abrasion can be alleviated by adding the CR, while the CR has few influences on the ballast breakage. When CR size is close to ballast particle size, the effects of degradation reduction are not obvious. The corner and edge loss are the main types of ballast abrasion, although different ballast materials significantly influence the abrasion type and degree. Most importantly, the image analysis method is proved to have the ability to present ballast degradation process and has great potential for further degradation-related studies.

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“…In the automotive applications, the annual demand for rubber shock absorber has reached several hundred millions, and the number is attempt to rise year by year. With the development of railway, the demand for rubber shock absorber is becoming larger and larger [3,4] . Moreover, the bridge bearing is also widely used rubber shock absorber [5] .…”

Section: Introductionmentioning

confidence: 99%

Damping Properties of Natural rubber/ Epoxidized Natural Rubber composites with different fillers

Wang¹,

Liao²,

Lin³

et al. 2018

Proceedings of the 2017 3rd International Forum on Energy, Environment Science and Materials (IFEESM 2017)

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Natural rubber(NR)/Epoxidized Natural Rubber(ENR)/Carbon black(CB), NR/ENR/silica(SiO2), NR/ENR/ montmorillonoid(MMT) and NR/ENR/carbon nanotube(CNT) were prepared in an open two-roll laboratory mixing mill at 50～60 °C. Curing property and static mechanical property of NR/ENR composites with different fillers were investigated. Damping property of NR/ENR composites with different fillers was operated by dynamic mechanical analysis. Results showed that filler MMT and CNT when adding 10 parts per hundreds of rubber (phr) could enhance the damping property of NR/ENR composites, but lowered the mechanical property.

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Analysis of the vibration alleviation of a new railway sub-ballast layer with waste tyre rubber

Cited by 10 publications

References 11 publications

Sand–Tire Shred Mixture Performance in Controlling Surface Explosion Hazards That Affect Underground Structures

Sand–Tire Shred Mixture Performance in Controlling Surface Explosion Hazards That Affect Underground Structures

Effects of crumb rubber size and percentage on degradation reduction of railway ballast

Damping Properties of Natural rubber/ Epoxidized Natural Rubber composites with different fillers

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