Characteristics and engineering properties of residual soil of volcanic deposits

Wibawa, Y Sunarya; Sugiarti, K; Soebowo, Eko

doi:10.1088/1755-1315/118/1/012041

Cited by 10 publications

(8 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Residual soils possess distinct traits that are not fully accounted for in traditional soil classi cation methods intended for transported soils like the Uni ed Soil Classi cation System (USCS). The unique clay mineralogy found in certain residual soils presents features that do not align with the standard characteristics of the soil group it belongs to, as recognized in current systems such as the USCS (Wibawa et al, 2018). Existing soil classi cation systems, such as the USCS, are not su cient to describe the range of materials present in a soil mass due to weathering.…”

Section: Introductionmentioning

confidence: 99%

Poroelastic Effects of Chemical Loading in Consolidation of Residual Soils

Irheren,

Onyia,

Okafor

2024

Preprint

View full text Add to dashboard Cite

An analytical chemo-hydromechanical model of residual soils was presented in this study. The modeling procedure utilized a unique phenomenological approach, which highlighted some of the macro-mechanical influences responsible for the behavior of residual soils. The macromechanical analysis yielded an extended poroelastic theory. The developed model was applied in solving a typical civil engineering problem of soil consolidation. For a chemical loading treatment, the problem was using requisite boundary conditions. Thereafter, the mathematical software “Mathematica” was used for solving the ensuing diffusion equations using physico-chemical properties typical of a residual soil sample. Even though the chemical loading was instantaneous, it took some time before its effect could be felt everywhere according to the poroelastic theory. From obtained results, the evolution of the generated pore pressure showed increasing segments of the soil returning to their initial state after the passage of the pore pressure front. The vertical displacement showed a slight increase or elevation of the soil surface. The flux of water flow in the soil was initially positive before turning negative, which can be explained by initial successful penetration of the infiltrating liquid until it met increasingly tortuous paths as result of lower permeability. The water volume (per unit area) leaving the soil after chemical loading demonstrated that a portion of the water flux associated with the infiltrating liquid ends up leaving the soil through the sides.

show abstract

Section: Introductionmentioning

confidence: 99%

Poroelastic Effects of Chemical Loading in Consolidation of Residual Soils

Irheren,

Onyia,

Okafor

2024

Preprint

View full text Add to dashboard Cite

show abstract

“…In Indonesia, these deposits occupy 53% of the land area and form the basis for constructing various types of infrastructure. [9, [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Tropical Volcanic Residual Soil

Iqbal¹,

Muslim²,

Zakaria³

et al. 2022

Progress in Volcanology

View full text Add to dashboard Cite

In West Lampung, Sumatra, Indonesia, tropical volcanic residual soils are formed from weathering of volcanic breccias in hydrothermal alteration areas with a thickness of up to 20 m. This soil has the characteristics of clayey silt, low to high plasticity, brownish-red color, has the potential to swelling, easily eroded, and slide when it is saturated, and contains the minerals kaolinite, halloysite, illite, dickite, nacrite, montmorillonite, despujolsite, hematite, and magnetite. The results showed that this soil can cause corrosion of steel and is widely used by the community as a medium for growing plants and vegetables and as a foundation for infrastructure (for example, houses). The volcanic residual soil of the research area had Low Rare Earth Element (LREE) potential and specific uses. The soil with characteristic low plasticity has Liquid Limit (LL) brine value <50% will be suitable for agriculture purposes, building foundations, and earth construction. At the same time, the other category is soil with intermediate to high plasticity characteristics, which has an Liquid Limit (LL) brine value >50%, was more ideal for the primary forest.

show abstract

“…Also, basic rock with low silica content weathered into a dark colored soil that has a high amount of clay content. Residual soils are commonly found in unsaturated conditions situated above the groundwater table especially in the humid tropic regions around the world (Rahardjo et al., 1995; Wibawa et al., 2018). Prolonged heavy rainfall has been a significant factor that is increasingly inducing slope instabilities in the residual soil within slope areas in humid tropics around the world (Kirschbaum et al., 2020).…”

Section: Introductionmentioning

confidence: 99%

Geophysical and Geotechnical Evaluation of Landslide Slip Surface in a Residual Soil for Monitoring of Slope Instability

Olabode

San

Ramli

2022

Earth and Space Science

View full text Add to dashboard Cite

Electrical Resistivity Tomography (ERT) technique has been widely used conventionally to monitor slope instability; however, a detailed study to validate ERT models with geotechnical properties for monitoring of slope instability is still rare. The objective of this work was to evaluate soil water conditions in gravelly sand soil that influences slope instability. The ERT investigation was conducted on a 60 m survey length with 1.5 m electrodes space to obtain subsurface geological structures and geotechnical laboratory tests, and experiments were carried out to obtain soil engineering properties for validation of the ERT model results. Our results revealed three geological zones namely: saturated, weathered granite, boulders and floaters, and resistivity values of 1–800 Ωm, 1,200–4,000 Ωm, and >4,000 Ωm, respectively. The saturated zones were characterized by subsidence during dry season and possible collapsed structures of boulders and floaters during prolonged heavy rainfall. The analyzed ERT models revealed that the slip surface of a potential landslide may occur at the boundary between the saturated and weathered granite zones within 3.0 m depth. The analyzed geotechnical properties also confirmed the ERT result because the potential landslide sliding surface was delineated within 3.0 m depth at the boundary between gravelly sand with a lowest angle of internal friction of 30° and a cohesion of 8 KPa, which was easier to destroy, and silty sand with a high angle of internal friction of 33.8° and a cohesion of 12.7 KPa, which was more difficult to destroy. These findings are very fundamental in shaping the earth's surface, especially in the formation of landscapes.

show abstract

Characteristics and engineering properties of residual soil of volcanic deposits

Cited by 10 publications

References 2 publications

Poroelastic Effects of Chemical Loading in Consolidation of Residual Soils

Poroelastic Effects of Chemical Loading in Consolidation of Residual Soils

Tropical Volcanic Residual Soil

Geophysical and Geotechnical Evaluation of Landslide Slip Surface in a Residual Soil for Monitoring of Slope Instability

Contact Info

Product

Resources

About