Application of shear wave velocity for characterizing clays from coastal regions

Kulkarni, Mr. Prathmesh P.; Patel, Anjan; Singh, Devendrá

doi:10.1007/s12205-010-0307-1

Cited by 27 publications

(9 citation statements)

References 29 publications

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“…All of equations 5, 6 and 7 were correlated only for sand-kaolin mixture with percentage of sand% between 30% to 80%. The comparison between the Gs, MDD, and CC results from current study and the outcomes from Kulkarni et al [19] indicated similarity between both results and conform the progressive relationships between Gs, MDD, and CC (see Figure 8).…”

supporting

confidence: 83%

Effect of Coarse Content on Compaction Test

Alshameri¹

2021

CEBEL

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The compaction is a mechanism to densify the loose soils. The maximum soil densification can be achieved by optimization of the desirable optimum moisture content (OMC) and maximum dry density (MDD). The maximum dry density and the optimum moisture content were affected by several parameters. The coarse content (CC) is one of these parameters. This paper studied the effect of the coarse content on the compaction parameters (MDD, OMC). Several sand-kaolin mixtures had coarse content ranged from 30 % to 80 % and moisture content ranged from 12% to 20% were used to inspect the relationship between CC, specific gravity (Gs), MDD, OMC, and bulk density. The results presented five empirical correlations with coefficient of determination (R2 ≥ 0.98) between CC, Gs, MDD, OMC and bulk density. The comparison between the current study and previous researchers indicated that both soil type and moisture content have significant effect on the efficiency of the empirical correlation equations between the maximum dry density, specific gravity, and coarse content. The results indicated a linear relationship between coarse content toward maximum dry density and specific gravity where both MDD and Gs increased with an increase CC. In contrary, the results showed non-linear relationship between optimum moisture content and coarse content where OMC decrease with an increase CC.

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confidence: 83%

Effect of Coarse Content on Compaction Test

Alshameri¹

2021

CEBEL

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“…MPa, respectively. By combining the current data with those given in previous studies (Kulkarni et al 2010;Long and Donohue 2010;Heitor et al 2013;Ogino et al 2015) where low to medium plasticity soils (PI ≤ 32) were tested under low confining pressure, the relationship between V s and void ratio e can be obtained (Fig. 4b).…”

Section: Effects Of Soil Density (Or Void Ratio)mentioning

confidence: 62%

Dynamic parameters of subgrade soils prone to mud pumping considering the influence of kaolin content and the cyclic stress ratio

Nguyên

Indraratna

Singh

2021

Transportation Geotechnics

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Rail transport industry often desires to increase the freight capacities for heavy-haul trains to transport more goods. However, this requires an increase in the axle loads, which results in the railway foundation being subjected to higher cyclic stress ratio (CSR), causing significant subgrade distress. Recent laboratory investigations indicate that addition of kaolin to low-tomedium plasticity soils can avert early softening and fluidization of the soil under increasing CSR, how the dynamic parameters such as the shear modulus (G) and the damping ratio (D p ) of soils may change consequentially to this modification needs appropriate quantification. Furthermore, while there are plenty of studies correlating shear strain and plasticity index (PI) with the dynamic properties of the soil, the role of loading parameters such as the CSR and number of cycles (N) has not been thoroughly investigated. Therefore, efforts have been made to characterise the dynamic parameters of moderately plastic silty-clay soils with varying kaolin content (c K ) and loading parameters. The results indicate that as CSR exceeds a critical level, G decreases rapidly whereas D p was found to increase abruptly in few loading cycles. The paper also shows that when G diminishes about 20% from its initial value, any further loss in shear modulus would cause soil to turn into an unstable stage where the excess pore water pressure and shear strain begins to increase rapidly. Although varying the kaolin content does not alter the PI significantly, it causes a considerable effect on the dynamic parameters of the soil. Based on the current experimental findings, empirical models are proposed to estimate dynamic parameters of subgrade soils prone to mud pumping considering loading condition under heavy haul railways.

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“…It has been demonstrated by earlier researchers [100,121,122] that various geomechanical properties of the soil mass, viz., undrained shear strength, compression index, void ratio, elastic modulus and Poisson's ratio, can be determined in a noninvasive and nondestructive manner, easily, by correlating them to shear and compression wave velocities, V s and V p . Conventionally, resonant column, cyclic triaxial and torsional shear tests, which are quite intricate and expensive setups, have been employed for this purpose.…”

Section: Alteration In Geomechanical Propertiesmentioning

confidence: 99%

Novel Techniques to Simulate and Monitor Contaminant–Geomaterial Interactions

Singh

2019

Indian Geotech J

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Generation of huge amount of the toxic and hazardous wastes coming out of various industrial and domestic activities is becoming a major threat to the society. In the long run, mainly because of nonscientific storage, disposal and closure, and due to the presence of undesirable concentration(s) of chemicals and radionuclides, elevated temperatures and microbial activity, these wastes (read contaminants) interact with geomaterials, viz., soils, rock mass, groundwater. This interaction, termed as contaminant-geomaterial interaction, depending upon the severity of the contaminant(s) and interaction time, might alter overall characteristics of the geomaterials. Unfortunately, conventional laboratory and field instrumentation techniques are not well equipped to capture such interaction(s) and the mechanisms that prevail in the geomaterials. Hence, to achieve these objectives, evolving adequate and workable strategies, and modalities, that are nondestructive, noninvasive and economical is desirable. In this context, author's association with several industries resulted in development of innovative, cost-effective, yet efficient techniques that facilitate laboratory and/or in situ simulation and monitoring of such interaction(s). Details of these techniques, the philosophy behind their creation and the way they can be employed for safeguarding geoenvironment, from deterioration, are presented and discussed in this paper. Also, a brief discussion on some of the real-life situations where such techniques can be applied easily, by suitably modifying them, is presented for the benefit of the aspiring researchers and professionals.

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Application of shear wave velocity for characterizing clays from coastal regions

Cited by 27 publications

References 29 publications

Effect of Coarse Content on Compaction Test

Effect of Coarse Content on Compaction Test

Dynamic parameters of subgrade soils prone to mud pumping considering the influence of kaolin content and the cyclic stress ratio

Novel Techniques to Simulate and Monitor Contaminant–Geomaterial Interactions

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