Effect of layering and pre-loading on the dynamic properties of sand-rubber specimens in resonant column tests DOI Creative Commons
Magdalena Kowalska, Christos Vrettos

Acta Geotechnica, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 23, 2024

Abstract Several studies show that scrap tyre rubber mixed with sand is an effective and sustainable method for mitigating vibrations. The dynamic cyclic response of this composite soil has already been investigated. However, layered sand-rubber configurations have not considered yet. This study reports findings resonant column tests on three types specimen: (a) sand-only or rubber-only, (b) sand-rubber, (c) mixtures. analysis allowed evaluation the maximum shear modulus its degradation strain over a wide range confining stress strain. evolution damping ratio was determined analogously. Effects pre-loading pre-straining were also considered. results behaviour specimens much more similar to pure than mixtures, very low values, smaller stiffness pre-loading, higher damping. For example, at 100 kPa content 0/33.3/50/67.7/100% by volume, small moduli mixtures are equal 98.3/30.4/15.4/7.1/1.3 MPa 98.3/3.6-4.2/2.4-2.8/2.1/1.3 specimens, depending arrangement layers. A beam model shown be adequate calculating comprising layers large contrast.

Language: Английский

Experimental investigation of the mechanical behaviour of sand-rubber-gravel mixtures DOI
G. C. I. Lin, Wei Liu, Fang Yang

et al.

Bulletin of Engineering Geology and the Environment, Journal Year: 2025, Volume and Issue: 84(2)

Published: Jan. 22, 2025

Language: Английский

Citations

0
Effect of waste rubber on compressive strength, pore distribution and micromorphology properties of cement soil DOI

Dongdong Ma,

Jie Ding, M. Chanda

et al.

Bulletin of Engineering Geology and the Environment, Journal Year: 2025, Volume and Issue: 84(5)

Published: May 1, 2025

Language: Английский

Citations

0
Ground Tire Rubber as a Sustainable Additive: Transforming Desert Sand Behavior DOI Creative Commons

Nabil F. Ismael,

Dalya Ismael,

Asmaa Al-Ahmad

et al.

Geotechnical and Geological Engineering, Journal Year: 2024, Volume and Issue: 42(6), P. 4663 - 4677

Published: May 4, 2024

Abstract Managing waste tires presents a significant challenge globally, particularly in regions experiencing high temperatures and shortage of landfill sites. This issue is affecting countries like Kuwait, where the abundance major source environmental safety risks, during intensely hot summer months. extreme heat has sparked numerous fires, leading to substantial air pollution due thick black smoke. Given limited disposal options, recycling finding practical applications for ground tire rubber (GTR) essential. To address challenge, comprehensive laboratory testing program was conducted, using locally produced aggregates as an additive Kuwait's local surface sands. Two new variables were examined namely size gradation GTR, density compacted mixes. For this purpose, two different sizes aggregates, fine coarse locally, utilized, impact relative compaction on strength compressibility mixtures investigated by samples maximum 95% density. The results suggest that combining sands with additives lighter, more permeable, compressible material, contributing significantly sustainable management. With 20% dry decreased nearly 20%, permeability increased 1.74–3.11 times compression index 6.15 3.8 respectively. angle friction remained unchanged at 36° addition 3°–4° rubber. change behavior although not increase stiffness, offers range suitable civil engineering management, including use drainage layer, embankment construction soft ground, earth fill around retaining walls, asphalt mixes, manufacturing tiles sports facilities.

Language: Английский

Citations

0
Investigating the effects of non-uniformity of mixing on the shear behavior of soft-rigid mixtures with DEM DOI
Junqi Zhang, Yuanjie Xiao, Xiaobin Chen

et al.

Computers and Geotechnics, Journal Year: 2024, Volume and Issue: 176, P. 106794 - 106794

Published: Sept. 30, 2024

Language: Английский

Citations

0
Effect of layering and pre-loading on the dynamic properties of sand-rubber specimens in resonant column tests DOI Creative Commons
Magdalena Kowalska, Christos Vrettos

Acta Geotechnica, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 23, 2024

Abstract Several studies show that scrap tyre rubber mixed with sand is an effective and sustainable method for mitigating vibrations. The dynamic cyclic response of this composite soil has already been investigated. However, layered sand-rubber configurations have not considered yet. This study reports findings resonant column tests on three types specimen: (a) sand-only or rubber-only, (b) sand-rubber, (c) mixtures. analysis allowed evaluation the maximum shear modulus its degradation strain over a wide range confining stress strain. evolution damping ratio was determined analogously. Effects pre-loading pre-straining were also considered. results behaviour specimens much more similar to pure than mixtures, very low values, smaller stiffness pre-loading, higher damping. For example, at 100 kPa content 0/33.3/50/67.7/100% by volume, small moduli mixtures are equal 98.3/30.4/15.4/7.1/1.3 MPa 98.3/3.6-4.2/2.4-2.8/2.1/1.3 specimens, depending arrangement layers. A beam model shown be adequate calculating comprising layers large contrast.

Language: Английский

Citations

0