Effect of particle shape of glass beads on the strength and deformation of cemented sands

Xiao, Yang; Yuan, Zhengxin; Lin, Jia; Ran, Jinyu; Dai, Bei‐Bing; Chu, Jian; Liu, Hanlong

doi:10.1007/s11440-019-00830-w

Cited by 34 publications

(7 citation statements)

References 76 publications

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“…Numerous studies have demonstrated that the MICP process can significantly improve the engineering properties of soils, such as the strength [113][114][115][116][117][118][119][120][121][122] as shown in Fig. 1, stiffness [115,118,[123][124][125][126][127][128][129][130][131][132], and thermal conductivity [133,134], etc. Some studies also proposed to further enhance the strength of bio-cemented soil by adding other materials, such as lime [42], fiber [54,125,[135][136][137][138][139][140][141][142][143], hydrogelassisted [144], the hydrophilic polymer [145,146], and alginate [147].…”

Section: Strength Enhancement Of Soilmentioning

confidence: 99%

“…II) Number of Treatments or Cementation Level: It has been widely reported in the literature that the strength enhancement of the bio-cemented soil generally increases with the number of treatments [123,130,134,170,181,213,246] or the cementation level [115,117,131,244,248,[253][254][255][256].…”

Section: Cementation Solution Parametersmentioning

confidence: 99%

“…III) Treatment Duration or Interval: Several studies [33,42,121,123,130,155,190,202,239] have reported that the strength enhancement of the bio-cemented sample would be greater with longer treatment duration. On the contrary, Danjo and Kawasaki [38] found that the UC strength of the bio-cemented sample decreased with the increase of injection interval (0.5, 1, and 2 d), although the calcium concentration in the drainage with greater interval was lower than that of smaller interval.…”

Section: Cementation Solution Parametersmentioning

confidence: 99%

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Recent development in biogeotechnology and its engineering applications

Cui

Chu

2021

Front. Struct. Civ. Eng.

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Microbial geotechnology or biogeotechnology is a new branch of geotechnical engineering. It involves the use of microbiology for traditional geotechnical applications. Many new innovative soil improvement methods have been developed in recent years based on this approach. A proper understanding of the various approaches and the performances of different methods can help researchers and engineers to develop the most appropriate geotechnical solutions. At present, most of the methods can be categorized into three major types, biocementation, bioclogging, and biogas desaturation. Similarities and differences of different approaches and their potential applications are reviewed. Factors affecting the different processes are also discussed. Examples of up-scaled model tests and pilot trials are presented to show the emerging applications. The challenges and problems of biogeotechnology are also discussed.

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Section: Strength Enhancement Of Soilmentioning

confidence: 99%

Section: Cementation Solution Parametersmentioning

confidence: 99%

Section: Cementation Solution Parametersmentioning

confidence: 99%

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Recent development in biogeotechnology and its engineering applications

Cui

Chu

2021

Front. Struct. Civ. Eng.

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“…is closely connected to the micro-structural features of contained particles, where the morphology is one of the most dominant factors [5,6,7,8,9]. As illustrated by various observations and theories, the particle shape governs not only granular characteristics [10,11,12] containing friction, interaction and deformation but also assembly responses [13,14,15] enclosing permeability, strength and failure.…”

Section: Introductionmentioning

confidence: 98%

“…where µ(x) and σ(x) are the corresponding average and variance. This allows the Distribution item to be expressed as:KL(p(z | x) q(z)) (x) + σ 2 (k) (x) − ln σ 2 (k) (x) − 1 ( 11). …”

mentioning

confidence: 99%

Characterization and Generation of 3D Realistic Geological Particles with Metaball Descriptor based on X-Ray Computed Tomography

Yang¹,

Gao²,

Zhang³

et al. 2023

Preprint

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The morphology of geological particles is crucial in determining its granular characteristics and assembly responses. In this paper, Metaball-function based solutions are proposed for morphological characterization and generation of three-dimensional realistic particles according to the X-ray Computed Tomography(XRCT) images. For characterization, we develop a geometricbased Metaball-Imaging algorithm. This algorithm can capture the main contour of parental particles with a series of non-overlapping spheres and refine surface-texture details through gradient search. Four types of particles, hundreds of samples, are applied for evaluations. The result shows good matches on key morphological indicators(i.e., volume, surface area, sphericity, circularity, corey-shape factor, nominal diameter and surface-equivalentsphere diameter), confirming its characterization precision. For generation, we propose the Metaball Variational Autoencoder. Assisted by deep neural networks, this method can generate 3D particles in Metaball form, while

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