Soil Properties: Physics Inspired, Data Driven

Santamarina, J. Carlos; Park, Junghee; Terzariol, Marco; Cardona, Alejandro; Castro, Gloria M.; Cha, Wonjun; Garcia, Adrian; Hakiki, Farizal; Lyu, Chuangxin; Salva, Marisol; Shen, Yuanjie; Sun, Zhonghao; Chong, Song-Hun

doi:10.1007/978-3-030-06249-1_3

Cited by 15 publications

(8 citation statements)

References 39 publications

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“…A sample tube and 1kg plastic bag were used to collect up to 12 samples along the Liwa-Sumberjaya West Cross Road in West Lampung. The soil was then tested at the Geological Engineering laboratory, Padjadjaran University, Indonesia, to determine physical properties such as grain size (ASTM D422-63) (ASTM, 2007), Atterberg limit (ASTM D4318 -17e1) (ASTM, 2017), soil type based on ASTM and USCS standards (ASTM D2487-17) (ASTM, 2017), soil activity (AI) [18] and soil plasticity ( [19]; [20]).…”

Section: Methodsmentioning

confidence: 99%

Influence of faults on mineralogy and geotechnical characteristics of Tropical Volcanic Residual Soils (TVRS) concerning environmental issues and regional development, Case Study: West Lampung Transect Road, Sumatra, Indonesia

Iqbal,

Puswanto

2024

IOP Conf. Ser.: Earth Environ. Sci.

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Hydrothermal alteration occurs in andesitic rocks in the study area due to the presence of the Great Sumatran Fault. This study shows the consequences of this phenomenon on the characteristics of volcanic residual soils. This study comprises volcanic residual soils formed from the same andesitic rocks in a site located in West Lampung, Sumatra, Indonesia which has a tropical climate. Chemical, physical, and mineralogical characterizations were carried out to describe the materials and the changes imposed by their alteration. Effects of alteration on the soil’s behavior were assessed in terms of plasticity.

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Section: Methodsmentioning

confidence: 99%

Influence of faults on mineralogy and geotechnical characteristics of Tropical Volcanic Residual Soils (TVRS) concerning environmental issues and regional development, Case Study: West Lampung Transect Road, Sumatra, Indonesia

Iqbal,

Puswanto

2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…Future MICP field experiments should include a coring campaign to establish pre-existing conditions, and then target active MICP zones as identified by geophysical and well sampling. The study of cores collected before, during, and after MICP would allow direct observation of microbes on sediments (known to differ from those in water; cf., Lehman, 2007) detection of newly formed calcite in the subsurface, measurement of sediment strength, stiffness, and response to shear forces (Santamarina et al, 2019). Such analyses would complement data acquired by geophysical monitoring tools at the site (Saneiyan et al, 2019).…”

Section: Considerations For Future Micp Research At Field Sitesmentioning

confidence: 97%

Microbial and Geochemical Dynamics of an Aquifer Stimulated for Microbial Induced Calcite Precipitation (MICP)

et al. 2020

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Microbially induced calcite precipitation (MICP) is an alternative to existing soil stabilization techniques for construction and erosion. As with any biologically induced process in soils or aquifers, it is important to track changes in the microbial communities that occur as a result of the treatment. Our research assessed how native microbial communities developed in response to injections of reactants (dilute molasses as a carbon source; urea as a source of nitrogen and alkalinity) that promoted MICP in a shallow aquifer. Microbial community composition (16S rRNA gene) and ureolytic potential (ureC gene copy numbers) were also measured in groundwater and artificial sediment. Aquifer geochemistry showed evidence of sulfate reduction, nitrification, denitrification, ureolysis, and iron reduction during the treatment. The observed changes in geochemistry corresponded to microbial community succession in the groundwater and this matched parallel geophysical and mineralogical evidence of calcite precipitation in the aquifer. We detected an increase in the number of ureC genes in the microbial communities at the end of the injection period, suggesting an increase in the abundance of microbes possessing this gene as needed to hydrolyze urea and stimulate MICP. We identify geochemical and biological markers that highlight the microbial community response that can be used along with geophysical and geotechnical evidence to assess progress of MICP.

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“…Based on laboratory analysis (Table 1), the soil of the research area is included in the high plasticity silt type (MH) [50]; has characteristics low to medium plasticity characteristics (LL Brine 32.12% -68.66%) [51,52]. This soil has a specific gravity of 2.41-3.03.…”

Section: Characteristicsmentioning

confidence: 99%

Tropical Volcanic Residual Soil

Iqbal¹,

Muslim²,

Zakaria³

et al. 2022

Progress in Volcanology

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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.

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Soil Properties: Physics Inspired, Data Driven

Cited by 15 publications

References 39 publications

Influence of faults on mineralogy and geotechnical characteristics of Tropical Volcanic Residual Soils (TVRS) concerning environmental issues and regional development, Case Study: West Lampung Transect Road, Sumatra, Indonesia

Influence of faults on mineralogy and geotechnical characteristics of Tropical Volcanic Residual Soils (TVRS) concerning environmental issues and regional development, Case Study: West Lampung Transect Road, Sumatra, Indonesia

Microbial and Geochemical Dynamics of an Aquifer Stimulated for Microbial Induced Calcite Precipitation (MICP)

Tropical Volcanic Residual Soil

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