Geotechnical Characterization of Soils in the Eastern and Western Areas of Tehran

Razmyar, Arash; Eslami, Abolfazl

doi:10.48084/etasr.1200

Cited by 3 publications

(2 citation statements)

References 4 publications

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“…is indicates that the swelling deformation of studied soil is nonlinear with the depth of soil layer and apparent difference between an upper and lower layer of the study area, i.e., Holte town [30].…”

Section: Field and Laboratory Test Resultsmentioning

confidence: 95%

Contemplated Investigation and Statistical Prediction of the Swelling Potential of Expansive Soils Using Index Properties of Holte Town, Southern Ethiopia

Entonyos

Dasho

Pampana

2022

Advances in Civil Engineering

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Expansive soils are problematic by exhibitingl shrink-swell behaviors and high plasticity under different moisture conditions, which is communal in salient areas of Ethiopia. This article aims to conduct a contemplated investigation and statistical analysis-based prediction for swelling potentials of soils using the index properties. This is used to define the properties of soils by investigation and to minimize the rigorous futuristic investigation by providing the prediction model of soils of the Holte town. Hence, thirty soil samples were collected from fifteen test pits with a depth of 1.5 m to 3.0 m from various locations. Investigations were conducted in the field and laboratory. Results revealed that the in situ moisture content, dry density, and bulk unit weight ranges were found, 31.21–40.93%, 1.20–1.30 g/cm3, and 1.60–1.73 g/cm3, respectively. The soil grain results presented that the study area is dominantly fine-grained soil properties (i.e., silt and clay). Liquid limit, plastic limit, plasticity index, and liquidity index ranged from 58 to 77%, 26–33%, 28–45%, and 0.00–0.35%, respectively, which assured that the soils in this town have 87% high plastic clay (CH). In addition, the swelling potential, swelling pressure, free swell, and activity investigations revealed that the soils in this town are highly plastic with a high degree of expansiveness. This was found that the swelling potential is the main measuring property of expansive soils, which was predicted by the statistical tool SPSS using numerous index properties. After conducting numerous statistical models, the best swelling potential was found Sp = 6.876γd + 0.178PI − 10.664, which is maintained by 90% of the points found within the regression line having a mean confidence level of 99.99%. In conclusion, the obtained model was validated and was found as an optimal measuring tool of expansiveness through the swelling potential of soils specifically in Holte town.

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Section: Field and Laboratory Test Resultsmentioning

confidence: 95%

Contemplated Investigation and Statistical Prediction of the Swelling Potential of Expansive Soils Using Index Properties of Holte Town, Southern Ethiopia

Entonyos

Dasho

Pampana

2022

Advances in Civil Engineering

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“…IV. ONE-DIMENSIONAL ANALYSIS One-dimensional (1D) nonlinear analysis was performed using DEEPSOIL v7.0 [5][6][7][8][9]. The most widely used pressuredependent hyperbolic, the Modified Kodner-Zelasko (MKZ) model [10], implemented in DEEPSOIL, was used.…”

Section: Input Ground Motionsmentioning

confidence: 99%

One-dimensional Site Response Analysis and Liquefaction Evaluation of Can Tho City, Vietnam

Nguyen¹,

Nguyễn²

2022

Eng. Technol. Appl. Sci. Res.

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Can Tho is the biggest city in the Mekong River Delta, one of the five national central cities in Vietnam. However, it has not been studied regarding seismic hazard estimation. For this purpose, one-dimensional nonlinear site response analysis of this city was performed in this paper. The measured in-situ profiles and corresponding geotechnical site investigation and laboratory test data were utilized to develop the site model for site-specific ground response analysis. A suite of earthquake records compatible with the Vietnam rock design spectrum (TCVN 9386:2012) was used as input ground motions at the bedrock. The results show that Peak Ground Acceleration (PGA) increases from the bedrock to the surface. Maximum PGA is 0.083g for O Mon district (P1) and 0.073g for Cai Rang district (P2). The maximum shear strain is reported to be 0.35% for P1 and 0.45% for P2. The recommended amplification factors are 1.7 for P1 and 1.9 for P2. Even though Can Tho city is composed of soft layers, liquefaction is unlikely to occur.

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Strength and settlement of subgrade soil in southern part of Kangeyam block

Raja¹,

Vishnuvardhan²,

Venkatachalam³

et al. 2022

Materials Today: Proceedings

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Geotechnical Characterization of Soils in the Eastern and Western Areas of Tehran

Cited by 3 publications

References 4 publications

Contemplated Investigation and Statistical Prediction of the Swelling Potential of Expansive Soils Using Index Properties of Holte Town, Southern Ethiopia

Contemplated Investigation and Statistical Prediction of the Swelling Potential of Expansive Soils Using Index Properties of Holte Town, Southern Ethiopia

One-dimensional Site Response Analysis and Liquefaction Evaluation of Can Tho City, Vietnam

Strength and settlement of subgrade soil in southern part of Kangeyam block

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