Partial Saturation as a Liquefaction Countermeasure: A Review

Seyedi-Viand, Seyed Mohsen

doi:10.1007/s10706-021-01926-5

Cited by 11 publications

(5 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results of the combined study 26 of Skempton’s B-value and P-wave speed indicated that the velocity of P-wave propagation tends to increase from about 500 m/s to about 1800 m/s when the B-value increases from 0 to 0.95. Similar results were presented in 23 . Note that the motivation for study 26 was to find the geophysical parameter which can be used in situ instead of Skempton’s B-value (the use of which is non-practical in situ conditions) 26 .…”

Section: Introductionsupporting

confidence: 90%

“…The main focus of previous researchers 22 was to demonstrate the importance of achieving 100% saturation of the laboratory sand sample in order to avoid overestimating the strength of the sample against liquefaction. However, the resistance of sands to liquefaction due to partial saturation has been carefully studied by researchers as well over the years 23 . For example, cyclic shear tests indicated that a 10% decrease in soil saturation doubled the liquefaction resistance of medium-dense sand specimens 24 .…”

Section: Introductionmentioning

confidence: 99%

“…At full saturation, the highest undrained shear strength ratio causing liquefaction is 0.24 while at partial saturation, the range of B-values that cause "flow" is greater than 0.7 and more than 0.3 for triaxial compression and tension, respectively 25 . The liquefaction analysis of imperfectly saturated soils has led researchers to conclude that a decrease in the degree of saturation leads to more cycles (hence the time with the same frequency of vibration) to achieve liquefaction 23 . The results of the combined study 26 of Skempton’s B-value and P-wave speed indicated that the velocity of P-wave propagation tends to increase from about 500 m/s to about 1800 m/s when the B-value increases from 0 to 0.95.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Acoustic emission induced by sand liquefaction during vibration loading

Frid

Shulov

2022

Sci Rep

View full text Add to dashboard Cite

The article deals with the study of poorly graded sand samples of different grain content subjected to liquefaction. The research results show the V-shaped behavior of the AE parameters that correspond to the three-stage sand behavior: Phase A is associated with microfractures/displacements between sand grains caused by an increase in pore pressure before the liquefaction point. Phase B (the stage of AE silence just before the liquefaction point) reflects the equality between pore pressure and stress in the confining chamber. Phase C (the stage of increase in AE parameters’ values) is explained by intense friction between sand grains during their movement caused by liquefaction. Our results show that the AE behavior before, at, and after the liquefaction point is significantly affected by the sand grain content. The change in the sand composition from the poorly graded dune sand to "extremely poorly graded sand" significantly increases the time for the creation of the liquefaction state while the coarser the sand grains become, the longer duration of vibration loading is required to reach the liquefaction state.

show abstract

Section: Introductionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Acoustic emission induced by sand liquefaction during vibration loading

Frid

Shulov

2022

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Examinations into the generation of excess pore water pressure inside dams and liquefaction of the embankment soil have also been conducted [9][10][11][12]. Furthermore, diverse methodologies aiming to preclude liquefaction [13][14][15], erosion [16], seepage [17], and instability [18] within embankment soil have been proposed and studied across various literature. However, an in-depth parametric investigation assessing the performance of various soil types in embankment dam construction, especially under seismic conditions, warrants further exploration and discussion.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Responses of Embankment Dams, Constituted from Varied Soil Types, to Seismic Activity

Khan,

Seyedi

2023

ATG

View full text Add to dashboard Cite

This research delineates a numerical elucidation concerning the flow through an embankment, utilising PLAXIS2D software, and underscores the pivotal influence of soil composition-encompassing gravel, sand, and clay-on the structural resilience of embankments during seismic events. Different material models, incorporating the UBC3D-PLM for sand and the Hardening Soil (HS) small constitutive models for gravel and clay, were strategically employed to replicate embankment behaviours, ensuring a meticulous simulation of distinct soil types. The objective herein was to scrutinise the impact of dynamic loads and soil typologies on pertinent variables: settlements, lateral displacements, and excess pore water pressure engendered within the embankment. A comprehensive series of 2D finite element models, each representative of a specific soil type, were formulated and subsequently subjected to an earthquake record for dynamic analysis. It was discerned that embankments constituted from sand and gravel exhibited a pronounced settlement under dynamic loads, relative to those formulated from clay, primarily attributable to the absence of cohesion forces, augmented porosity, and diminished energy dissipation efficacy. Such factors render sand and gravel more prone to compression and settlement upon exposure to dynamic loads. Moreover, embankments fabricated from sand were identified to generate superior pore pressures compared to their clay or gravel counterparts, a phenomenon attributable to sand's compressibility which can engender augmented volumetric strains and initiate pumping phenomena, thereby elevating pore pressures. In contrast, gravel and clay materials demonstrated enhanced drainage capabilities and reduced compressibility, facilitating the proficient dissipation of excess pore pressures.

show abstract

“…To facilitate construction on such soils, stabilization is imperative to mitigate their swelling characteristics and enhance mechanical properties. A range of soil stabilization techniques has been documented in the literature, reflecting the evolution of methodologies in this domain [15,16].…”

Section: Introductionmentioning

confidence: 99%

Enhancing Geotechnical Properties of Clayey Soil with Recycled Plastic and Glass Waste

Al-Mohammedi,

Seyedi

2023

RCMA

View full text Add to dashboard Cite

Expansive clay soils, characterized by their propensity to undergo significant volume changes in response to moisture variations, present considerable challenges in construction engineering. These challenges manifest as structural damage, including fractures, asymmetrical settlements, and erosion. This study investigates the application of sustainable waste materials, specifically a mixture of plastic and glass waste, as an innovative approach to soil stabilization. In the context of Anbar, Iraq, laboratory experiments were conducted to evaluate the efficacy of incorporating plastic and glass waste in various proportions (0%, 4%, 5%, 6%) into clayey soil. The primary focus was to assess changes in geotechnical properties, notably the reduction in swelling potential and alterations in the maximum dry unit weight of the soil. Results indicated that the inclusion of waste materials in the specified proportions significantly mitigated the soil's swelling behavior, with reductions of 2%, 3%, and 5% observed for the respective waste content. Concurrently, enhancements in soil density were recorded, with increases in the maximum dry unit weight by 4%, 5%, and 9% corresponding to the same proportions of waste additives. These findings underscore the potential of using recycled waste materials in soil stabilization, aligning with environmental sustainability goals through the repurposing of waste. Additionally, this approach offers an economically viable alternative to traditional stabilization methods. The utilization of waste materials not only addresses the environmental impact of construction activities but also contributes to the broader goal of waste management and resource conservation.

show abstract

Partial Saturation as a Liquefaction Countermeasure: A Review

Cited by 11 publications

References 69 publications

Acoustic emission induced by sand liquefaction during vibration loading

Acoustic emission induced by sand liquefaction during vibration loading

Dynamic Responses of Embankment Dams, Constituted from Varied Soil Types, to Seismic Activity

Enhancing Geotechnical Properties of Clayey Soil with Recycled Plastic and Glass Waste

Contact Info

Product

Resources

About