Effect of swelling on the shear strength behaviour of expansive soil

Al-Obaydi, Moataz A.; Alkiki, Ibrahim; Aldaood, Abdulrahman

doi:10.1080/19386362.2019.1651043

Cited by 4 publications

(3 citation statements)

References 11 publications

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“…They will, in general, have low shear strength. and lose shear strength further after wetting or other physically unsettling influences [20]. They can be plastic and compressible, and they expand when wetted and recoil when dried.…”

Section: Lateritic Soilmentioning

confidence: 99%

Experimental Study of Improving the Properties of Lime-Stabilized Structural Lateritic Soil for Highway Structural Works using Groundnut Shell Ash

Amu

Adetayo

Faluyi

et al. 2021

Walailak J Sci & Tech

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This research considered the viability of groundnut shell ash (GSA) on lime-stabilized lateritic soil for highway structural works. Three samples of lateritic soil, named samples A, B, and C, were gathered from Idita-Mokuro, NTA-Mokuro, and ETF burrow pits, respectively, in Ile-Ife, Osun State, Nigeria. Preliminary tests were completed on the samples in their natural states and when stabilized with optimum lime. Engineering properties were performed while 2, 4, and 6 % GSA contents were added to the soil samples at optimum lime. The Atterberg limit tests showed a significant reduction in the plasticity index for samples A and C when stabilized with lime. Compaction test showed a decrease in the maximum dry density from 1,685 to 1,590 kg/m3 for sample A, 1,599 to 1,512 kg/m3 for sample B, and 1,396 to 1,270 kg/m3 for sample C on stabilizing with lime; the introduction of GSA to stabilized lime soil diminished the maximum dry density for all the soil samples, with sample A reduced to 1,435 and 1,385 kg/m3 at 2 and 4 GSA contents, respectively. The addition of GSA improved the engineering properties of lime-stabilized soils as the unsoaked CBR esteems expanded for all soil samples. At an optimum lime dosage, the addition of 2 % GSA expanded the triaxial shear strength from 60.43 to 188.36 kN/m2 for sample A and, at 4 % GSA content, both soil samples B and C increased from 19.19 to 201.48 kN/m2 and 30.62 to 111.65 kN/m2, respectively. Conclusively, GSA improved the toughness and strength of lime-stabilized lateritic soil for highway structural works.

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Section: Lateritic Soilmentioning

confidence: 99%

Experimental Study of Improving the Properties of Lime-Stabilized Structural Lateritic Soil for Highway Structural Works using Groundnut Shell Ash

Amu

Adetayo

Faluyi

et al. 2021

Walailak J Sci & Tech

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“…This variation in strength will directly affect the bearing resistance of the bedding layer and the joint shear stiffness of the bedding plane (El-Sohby et al, 2004;Fernandez et al, 2022). Accordingly, it affects the definition of material models in rock slope stability analyses, and in some cases, strain softening can happen after swelling (Al-Obaydi et al, 2021;Renani and Martin, 2020;Hegazy et al, 2019;Zeng et al, 2020). An experimental program is carried out in this research to determine the shear behaviour and parameters of the shale-limestone interface along the swelling phenomena of shale.…”

Section: Introductionmentioning

confidence: 99%

Influence of Swelling on Shear Strength of Shale-Limestone Interface

El-Latif

Awad

Aly

2022

MGPB

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Rock slope stability is almost controlled by the behaviour of the interface between rock layers. The presence of shale layers between limestone layers complicates this behaviour. As the shale layer undergoes swelling with moisture, it causes the shear interface properties to change with a specific behaviour different from the dry state. The behaviour will depend on the shale’s degree of saturation, swelling percentage, and stress level over shale. An experimental program was carried out to determine the shear interface behaviour parameters of shale-limestone during swelling phenomena to guide stability checks. The interface cohesion and friction angle results are reported along the swelling process and compared with the dry state condition. These results help engineers assign adequate and accurate values for joint shear and normal stiffness in jointed rock slopes, including swelling layers.

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“…The reason behind the damages that are inflicted to the lightweight structures may be due to the volume changes that the swelling soil is exposed to [4]. The different properties of expansive soil have a great role in soil structure, w c , and ( ) d γ because of their minerals [5]. The hydrophilic minerals are considered one of the most important characteristics that affect the shear strength of the soil.…”

mentioning

confidence: 99%

Experimental Study of Bearing Capacity Effect in Swelling Soil

Mohammed

Khalil

2021

International Journal of Applied Mechanics and Engineering

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The current study aims to investigate the effects of swell pressure on the bearing capacity of swelling soil. A model and some laboratory tests have been created to investigate the swell pressure effect on the bearing capacity variation of soil swelling due to swelling pressure. The influence of varying water content w/c and dry unit weight (γ d ) on the shear strength and swelling pressure was studied. The soil has been taken from Diwan Residential Compound-Mosul. It is classified as highly swelling soil. The swell pressure of soils at their natural water content reached 385 kN / m2 . Experiment results show that the parameters of shear resistance decreased with the w/c increase at the constant value of (γ d ), increased with the (γd ) increase when the w/c was constant. Results show that the swelling pressure decreased with the w/c increase, while it increased with the (γ d ) increase. Also, the results obtained using was model show that the resistance of bearing capacity of pre-saturated selected soil was 196 kN / m 2, while the bearing capacity was 620kN / m 2 when taking into account in the generation of swelling pressure.

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Effect of swelling on the shear strength behaviour of expansive soil

Cited by 4 publications

References 11 publications

Experimental Study of Improving the Properties of Lime-Stabilized Structural Lateritic Soil for Highway Structural Works using Groundnut Shell Ash

Experimental Study of Improving the Properties of Lime-Stabilized Structural Lateritic Soil for Highway Structural Works using Groundnut Shell Ash

Influence of Swelling on Shear Strength of Shale-Limestone Interface

Experimental Study of Bearing Capacity Effect in Swelling Soil

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