Investigation of soil deformation characteristics during pullout of a ribbed reinforcement using X-ray micro CT

Kido, Ryunosuke; Sawamura, Yasuo; Kimura, Koshi; Kimura, Makoto

doi:10.1016/j.sandf.2021.01.013

Cited by 5 publications

(1 citation statement)

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“…It should be noted that the initial vertical stress (σ v,0 ) acting on the reinforcement plane is a combination of the surcharge stress from loading devices on the soil specimen's upper surface and vertical geostatic soil pressure on the reinforcement, which varies based on the degree of confinement provided by the compacted soil. Pullout testing can result in local stress increases along the reinforcement at the interface between the reinforcement and the dense, compact, dilatant fill material [59,60], as shown in Figure 5c. Thus, the actual stress level experienced by the reinforcement elements can be significantly higher than σ v,0 [5], depending on their characteristics.…”

Section: Pullout Testsmentioning

confidence: 99%

Evaluation of Construction and Demolition Waste and Other Alternative Fills for Strip-Reinforced Soil Walls

et al. 2023

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This article assesses the pullout performance of ribbed metallic strips embedded in fill soils that do not conform to conventional design criteria for mechanically stabilized earth (MSE) walls. These alternative fill soils include gravelly and sandy recycled aggregates from construction and demolition waste, artificial and natural sands, and fine-grained lateritic soil. The research included soil characterization tests and large-scale pullout tests, conducted as part of this study. The results showed that the reinforcement pullout behavior was similar for recycled, artificial, and natural sands, indicating that soil particle size played a crucial role in mobilizing the interface pullout resistance. However, in the case of recycled sand, stress concentration at the reinforcement level led to particle crushing during pullout conditions, causing this material to exhibit less efficient performance compared to other sands. The fine-grained lateritic soil demonstrated inferior behavior compared to sandy soils, despite the interparticle bonding provided by the sesquioxide coating characteristic of intensely weathered tropical soils. Finally, an analytical prediction tool based on experimental results was developed, providing an alternative method to make conjectures about the performance of different soils during the pre-design stages, particularly based on particle size attributes.

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Section: Pullout Testsmentioning

confidence: 99%