Strength and Microstructural Assessment of Reconstituted and Stabilised Soft Soils with Varying Silt Contents

Liu, Yaxu; Liu, Zhuang; Oh, Erwin; Ong, Danny

doi:10.3390/geosciences11080302

Cited by 15 publications

(4 citation statements)

References 58 publications

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“…Liu, et al [45] thought that the UCS decreased with the increase in the silt content when the cement content was 30%. With the cement content ranging from 15%-25%, the UCS increased at first with the increase in the silt content but decreased once the silt content reached a 'saturation' point.…”

Section: Discussionmentioning

confidence: 99%

Experimental Study on the Impermeability and Micromechanisms of Basalt Fiber-Reinforced Soil-Cement in Marine Environments

Chen

Ren

et al. 2023

Coatings

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In coastal areas, structures such as cement-soil dams are often eroded by seawater, so it is significant to study how to improve the impermeability of cement-soil. Basalt fiber with a strong tensile property, good stability and a high-performance price ratio was selected as the additive to study the influence of the basalt fiber content on the permeability of soil-cement. The permeability test and the chloride ion permeability test were used to evaluate the best mixing amount. The results of the permeability test showed that, although the permeability coefficient of soil-cement decreased with the increase in the basalt fiber content, the decreased rate of the permeability coefficient showed a slowing trend. The results of the chloride ion permeability test indicated that the chloride ion-related impermeability of soil-cement was enhanced with the increase in the basalt content, which was confirmed by the consistent findings of the contrast permeability test. The comprehensive analysis shows that the optimal content ratio of the basalt fiber was 1.5%. Furthermore, a SEM analysis established that the addition of the basalt fiber reduced the soil-cement porosity, improved the structural compactness and formed a more stable whole. This study could serve as a valuable reference for soil-cement used in projects with impermeability requirements.

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Section: Discussionmentioning

confidence: 99%

Experimental Study on the Impermeability and Micromechanisms of Basalt Fiber-Reinforced Soil-Cement in Marine Environments

Chen

Ren

et al. 2023

Coatings

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“…Sifat dan kondisi tanah di lapangan perlu diberi perhatian penuh, karena terdapat beberapa jenis tanah yang tidak layak digunakan sebagai tanah dasar konstruksi bangunan seperti tanah lempung lunak. Tanah jenis tersebut perlu dilakukan upaya stabilisasi dengan teknik perbaikan tanah yang sesuai sebelum membangun infrastruktur di atasnya [2].…”

Section: Pendahuluanunclassified

Kajian Daya Dukung Tanah Lempung Distabilisasi dengan Abu Marmer

Waruwu,

Celline,

Sinaga

et al. 2024

SAINTIS

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[ID] Tanah dasar memiliki peranan penting dalam menjaga keamanan dan kestabilan konstruksi yang dibangun di atasnya. Tanah dasar perlu dipastikan berada di dalam kondisi yang baik dan mampu memberikan dukungan terhadap beban yang bekerja. Salah satu jenis tanah bermasalah adalah tanah lempung lunak. Tanah ini memiliki daya dukung rendah, sehingga memerlukan perbaikan sebelum pembangunan konstruksi di atasnya. Salah satu metode perbaikan tanah adalah stabilisasi. Bahan stabilisasi yang dipertimbangkan pada penelitian adalah abu marmer dari limbah marmer. Karakterisitik tanah yang ditinjau di antaranya indeks plastisitas, kepadatan, dan kohesi undrained. Indeks plastisitas tanah dapat diperoleh dengan melakukan uji Atterberg, kepadatan tanah dari uji kompaksi, dan kohesi undrained dari unconfined compression test. Kadar abu marmer yang digunaka adalah sebesar 3%, 6%, 9%, dan 12% dari berat kering tanah dengan variasi pemeraman 1 hari, 7 hari, 14 hari, dan 28 hari. Daya dukung tanah dapat dianalisis berdasarkan kohesi undrained pada setiap kadar abu marmer yang digunakan. Hasil penelitian menunjukkan perbaikan nilai indeks plastisitas, kepadatan, dan kohesi undrained tanah untuk setiap penambahan abu marmer, namun peningkatan yang optimal didapatkan pada penambahan 6% abu marmer dengan masa pemeraman maksimum 7 hari. Daya dukung tanah didapatkan meningkat secara maksimum pada penambahan abu marmer sebanyak 6% dan pemeraman 7 hari. [EN] Subgrade soil has an important role in maintaining the safety and stability of construction built on it. One type of problematic soil is soft clay. This land has a low bearing capacity, so it requires improvement before building on it. The aim of this research is to obtain changes in the bearing capacity of soil stabilized by marble ash. This research was carried out on soft clay soil with the addition of marble ash at 3%, 6%, 9%, and 12% of the dry weight of the soil with curing variations of 1 day, 7 days, 14 days, and 28 days. The soil characteristics reviewed include plasticity index, density, and undrained cohesion. Soil bearing capacity can be analyzed based on undrained cohesion at each level of marble ash used. The results showed an improvement in the plasticity index value from 33.82% dencreased to 7.69%; density with a dry unit weight of 1.50 gr/cm3 increased to 1.55 gr/cm3; and soil undrained cohesion increased from 0.134 kg/cm2 to 1.58 kg/cm2 due to the addition of marble ash. Optimal improvements in soil characteristics and bearing capacity were obtained by adding 6% marble ash with a maximum curing period of 7 days.

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“…The research on soil-structure interface mechanism and behavior is critical for geotechnical engineering applications. In recent years, advancements in technology have influenced how designs are conceptualized, considering sustainability aspects [1][2][3][4], challenges faced in laboratory soil tests [5,6], soil-structure simulations [7,8], and inferior in situ geomaterial conditions requiring biological [9][10][11][12][13][14] or chemical stabilization [15][16][17]. For instance, the study of the effects of the interface on soil-structure interactions have benefitted from this technological advancement to include the design of deep foundations [18][19][20][21][22][23], pavement-subgrade behavior [24,25], tunneling [26][27][28][29][30][31][32][33], mechanically stabilized geogrid retaining walls, and ground improvement in soft soils [34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Influence of Surface Roughness and Particle Characteristics on Soil–Structure Interactions: A State-of-the-Art Review

et al. 2022

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The study of soil–structure interface behavior contributes to the fundamental understanding of engineering performance and foundation design optimization. Previous research studies the effect of soil characteristics and surface roughness property on the soil–material interface mechanism via interface shear test. The reviews utilizing past established laboratory studies and more recent tests based on state-of-the-art technologies reveal that surface roughness significantly affects interface shear performances in the studies of soil–structure interactions, especially in peak shear strength development. A preliminary but original investigative study by the authors was also carried out using a sophisticated portable surface roughness gauge to define the material surface roughness properties in order to study the interface behavior parametrically. Additionally, using the authors’ own original research findings as a proof-of-concept innovation, particle image velocimetry (PIV) technology is applied using a digital single-lens reflex (DSLR) camera to capture sequential images of particle interactions in a custom-built transparent shear box, which validate the well-established four-stage soil shearing model. The authors also envisaged that machine learning, e.g., artificial neural network (ANN) and Bayesian inference method, amongst others, as well as numerical modeling, e.g., discrete element method (DEM), have the potential to also promote research advances on interface shear mechanisms, which will assist in developing a greater understanding in the complex study of soil–structure interactions.

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Strength and Microstructural Assessment of Reconstituted and Stabilised Soft Soils with Varying Silt Contents

Cited by 15 publications

References 58 publications

Experimental Study on the Impermeability and Micromechanisms of Basalt Fiber-Reinforced Soil-Cement in Marine Environments

Experimental Study on the Impermeability and Micromechanisms of Basalt Fiber-Reinforced Soil-Cement in Marine Environments

Kajian Daya Dukung Tanah Lempung Distabilisasi dengan Abu Marmer

Influence of Surface Roughness and Particle Characteristics on Soil–Structure Interactions: A State-of-the-Art Review

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