Electrical resistivity survey for evaluating the undrained shear strength of soft Bangkok clay at some of the canal-side road investigation sites

Chaiyaput, Salisa; Sutti, Nut; Suksawat, Taweephong; Ayawanna, Jiratchaya

doi:10.1007/s10064-021-02537-3

Cited by 4 publications

(2 citation statements)

References 24 publications

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“…PLAXIS (American Bentley Systems, Inc., Exton, PA, USA) ennsylvania is the most reliable software for FEM modeling and solving problems in geotechnical work using two-dimensional (2D) FEM under plane strain conditions [38,39]. Moreover, several previous works revealed that the simulation results from PLAXIS software are aligned with the actual situation in complex ground conditions [40][41][42]. PLAXIS software is therefore suitable for simulating the geometry of the road embankment.…”

Section: Numerical Simulationmentioning

confidence: 99%

Natural Para Rubber in Road Embankment Stabilization

Chaiyaput

Arwaedo²,

Jamsawang

et al. 2022

Applied Sciences

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This is the first study on “ribbed smoked sheets (RSS)” as a geogrid reinforcement in geotechnical engineering. An RSS is a kind of natural para rubber. RSS (grade 3) was designed as a biaxial geogrid with an aperture size of 20 mm × 20 mm and a spacing of 20 mm. The RSS was found to be a significant functional layer when applied to the subbase lateritic soil layer. The lateritic soil with an RSS reinforcing layer was greatly improved regarding the California bearing ratio (CBR). Numerical simulation using two-dimensional finite element software was used to determine the optimal number and positions of the RSS reinforcing layers in road embankment stabilization. The simulation data in terms of horizontal displacement of unreinforced road embankments was validated by the collected data from the actual construction site. The RSS reinforced layer was varied from one to three layers under 61 analysis conditions. The highest safety factor was obtained with two layers of RSS at 0.1H below the top of the road embankment and 0.4H below the first RSS layer, suggesting a suitable installation of the RSS reinforcing layer. The RSS is thus strongly recommended as a reinforcing material in low CBR lateritic soil for the road embankment.

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Section: Numerical Simulationmentioning

confidence: 99%

Natural Para Rubber in Road Embankment Stabilization

Chaiyaput

Arwaedo²,

Jamsawang

et al. 2022

Applied Sciences

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“…The outcome suggested the two techniques can be used to investigate the stability of canal side roads. The electrical resistivity method estimated the shear strength of Bangkok clay as a primary appraisal for road construction (Chaiyaput et al, 2022).…”

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confidence: 99%

Subsurface Investigation for Road Construction Using Electrical Resistivity Method along Oloko road, Apatapiti, Akure, Ondo State, Nigeria

Oguntade

2022

Annals of Science and Technology

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Evaluation of the shallow geologic materials in terms of types, nature, and bedrock structure as possible causes of pavement failure was carried out along Oloko road Apatatpiti, Akure, Nigeria, using Schlumberger vertical electrical sounding and 2-D imaging dipole-dipole techniques. Three lithological layers, namely thin top soil, weathered layer and weathered basement, were revealed by the 2-D resistivity structure. Vertical electrical soundings were made at locations with a very low resistive medium typical of linear features such as fractures/faults at some distances on the 2-D resistivity structure. Four geologic layers, namely the top soil, clay/sandy clay, fractured basement, weathered/fresh basement, were identified by the geoelectric section. The geoelectric section and the 2-D resistivity structure revealed that the upper 0-6m, which constitutes the subgrade, has a low resistivity (36 Ωm to 108 Ωm) characterised to be clayey materials and suggestive of weak zones that might impair the stability of the road. A relatively shallow depth, ranging from 3.7 m to 4.29 m, was the depth to the water table of the four wells close to the road. Therefore, the possible causes of pavement failure are the thick and low resistive layer, the near-surface linear features suspected to be fractures/faults, and the water table’s shallow depth.

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