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Model test and discrete element method simulation of shield tunneling face stability in transparent clay

Huayang LEI, Yajie ZHANG, Yao HU, Yingnan LIU

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 1,   Pages 147-166 doi: 10.1007/s11709-020-0704-6

Abstract: In this study, a transparent clay with properties similar to those of Tianjin clay is prepared and anew transparent clay model test apparatus is developed to overcome the “black box” problem in the traditionalclay under active failure.A series of transparent clay model tests is performed to investigate the active failure mode, influenceThe results show that the engineering characteristics of transparent clay are similar to those of soft

Keywords： shield tunneling face     stability     transparent clay     model test     numerical simulation    

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Bearing and uplift capacities of under-reamed piles in soft clay underlaid by stiff clay using lower-bound

Mantu MAJUMDER, Debarghya CHAKRABORTY

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 2,   Pages 537-551 doi: 10.1007/s11709-021-0708-x

Abstract: Ensuring a safe foundation design in soft clay is always a challenging task to engineers.In the present study, the effectiveness of under-reamed piles in soft clay underlaid by stiff clay iswith the increase in the length-to-shaft-diameter ratio ( / ) and adhesion factors in soft clay ( )and stiff clay ( ).and soft clay underlaid by stiff clay.

Keywords： bearing capacity     uplift capacity     under-reamed pile     clay     limit analysis    

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Model testing of tripod caisson foundations in silty clay subjected to eccentric lateral loads

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 467-476 doi: 10.1007/s11709-023-0933-6

Abstract: the bearing capacities of tripod caisson foundations subjected to eccentric lateral loads in silty clay

Keywords： tripod caisson foundation     silty clay     eccentric lateral capacity     model tests    

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Behavior of compacted clay-concrete interface

R. R .SHAKIR, Jungao ZHU

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 1,   Pages 85-92 doi: 10.1007/s11709-009-0013-6

Abstract: Tests of interface between compacted clay and concrete were conducted systematically using interfacewater content, normal stress and rough surface on the shear stress-shear displacement relationship of clay-concretedisplacement behavior for both cases of relatively rough and smooth concrete surface except when the claygreater than 16% for the case of rough concrete surface where the shear failure occurs in the body of the claythe interface shear strength increases with increasing water content ratio especially for the case of clay-rough

Keywords： soil structure interaction     simple shear test     interface     friction     compacted clay     interface modeling    

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Preparation of transparent BaSO

Le Fang, Qian Sun, Yong-Hong Duan, Jing Zhai, Dan Wang, Jie-Xin Wang

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 4,   Pages 902-912 doi: 10.1007/s11705-020-1985-y

Abstract: To the best of our knowledge, the synthesis of transparent BaSO nanodispersions was rarely reported.Here, we firstly present a novel and efficient method to prepare transparent and stable BaSO nanodispersionsFurthermore, the transparent BaSO -polyvinyl butyral nanocomposite films with good X-ray shielding performanceWe believe that the stable BaSO nanodispersions may have a wide range of applications for transparent

Keywords： BaSO4 nanoparticles     rotating packed bed     transparent nanodispersions     BaSO4-PVB films    

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Analysis of cement-treated clay behavior by micromechanical approach

Dong-Mei ZHANG, Zhen-Yu YIN, Pierre-Yves HICHER, Hong-Wei HUANG

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 2,   Pages 137-153 doi: 10.1007/s11709-013-0204-z

Abstract: Cementation is produced by mixing a certain amount of cement with the saturated clay.purpose of this paper is to model the cementation effect on the mechanical behavior of cement-treated claycompression and undrained triaxial tests under various confining stresses on cement-treated Ariake clayand Singapore clay with various cement contents.micromechanical approach is well adapted for taking into account the main physical properties of cement-treated clay

Keywords： microstructure     cementation     clay     micromechanics     anisotropy     debonding    

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ImgFS: a transparent cryptography for stored images using a filesystem in userspace

Osama A. KHASHAN,Abdullah M. ZIN,Elankovan A. SUNDARARAJAN

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 1,   Pages 28-42 doi: 10.1631/FITEE.1400133

Abstract: To overcome these limitations, the concept of transparent encryption has been proposed.This paper describes the design and implementation of ImgFS, a fully transparent cryptographic file system

Keywords： Storage image security     Cryptographic file system     Filesystem in userspace (FUSE)     Transparent encryption    

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Utilizing transparent and conductive SnO

Jing Gu, Hongtao Yu, Xie Quan, Shuo Chen, Junfeng Niu

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 4, doi: 10.1007/s11783-020-1251-z

Abstract: . • Transparent and conductive SnO2 can pass light through and promote charge transport. • VO from SnO2Herein, by employing transparent and conductive SnO2 as electron mediator to pass light through and promoteIntroducing a transparent and conductive electron mediator to construct Z-scheme photocatalyst gives

Keywords： Z-scheme photocatalyst     Tin oxide     Electron mediator     Organic pollutant    

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Experimental investigation of the influence on static and cyclic deformation of structural soft clay

CHEN Yunmin, CHEN Yingping, HUANG Bo

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 4,   Pages 422-429 doi: 10.1007/s11709-007-0057-4

Abstract: This paper presents the experimental results performed to study the static and cyclic deformation behavior of undisturbed and remolded soft clays sampling from Xiaoshan. The consolidation tests indicated that the vertical strains of

Keywords： consolidation     deformation     experimental     undisturbed    

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Synthesis, characterization and assessment thermal properties of clay based nanopigments

Mohammad Banimahd KIEVANI, Milad EDRAKI

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 1,   Pages 40-45 doi: 10.1007/s11705-015-1505-7

Abstract: Nano-clay based pigments (NCP) are new type of pigments composed of organic dyes and layered silicate-clay

Keywords： nanopigment     layered silicate     cationic dye     thermal properties    

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Ultimate bearing capacity of strip footing resting on clay soil mixed with tire-derived aggregates

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 1016-1024 doi: 10.1007/s11709-021-0751-7

Abstract: This study investigated the use of recycled tire-derived aggregate (TDA) mixed with kaolin as a method of increasing the ultimate bearing capacity ( UBC) of a strip footing. Thirteen 1g physical modeling tests were prepared in a rigid box of 0.6 m × 0.9 m in plan and 0.6 m in height. During sample preparation, 0%, 20%, 40%, or 60% (by weight) of powdery, shredded, small-sized granular (G 1–4 mm) or large-sized granular (G 5–8 mm) TDA was mixed with the kaolin. A strip footing was then placed on the stabilized kaolin and was caused to fail under stress-controlled conditions to determine the UBC. A rigorous 3D finite element analysis was developed in Optum G-3 to determine the UBC values based on the experimental test results. The experimental results showed that, except for the 20% powdery TDA, the TDA showed an increase in the UBC of the strip footing. When kaolin mixed with 20% G (5–8 mm), the UBC showed a threefold increase over that for the unreinforced case. The test with 20% G (1–4 mm) recorded the highest subgrade modulus. It was observed that the UBC calculated using finite element modeling overestimated the experimental UBC by an average of 9%.

Keywords： kaolin     physical modeling tests     stabilization     numerical modeling    

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Optimized porous clay heterostructure for removal of acetaldehyde and toluene from indoor air

Pu ZHAO,Lizhong ZHU

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 2,   Pages 219-228 doi: 10.1007/s11783-014-0760-z

Abstract: In this study, a series of new porous clay heterostructure (PCH) adsorbents with various ratios of micropores

Keywords： porous clay heterostructure     volatile organic compounds     adsorption     adsorbent     indoor air    

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From resource sharing to service sharing: opportunities and challenges of transparent computing

Zhang Yaoxue,Zhou Yuezhi

Strategic Study of CAE 2009, Volume 11, Issue 8,   Pages 10-17

Abstract: This paper proposes a new computing paradigm, transparent computing, which aims for service sharing andpresents the concept, architecture and key technologies of transparent computing.Moreover, it also gives the prospect of the impact and future development of transparent computing.

Keywords： pervasive computing     resource sharing     service sharing     transparent computing    

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Transformation of Fibrous Membranes from Opaque to Transparent Under Mechanical Pressing Article

Chao Wang, Jing Zhao, Liu Liu, Peng Zhang, Xianfeng Wang, Jianyong Yu, Bin Ding

Engineering 2022, Volume 19, Issue 12,   Pages 84-92 doi: 10.1016/j.eng.2021.02.018

Abstract:

There is a great demand for transparent films, membranes, or substrates in the fields of intelligentThus, the development of transparent electrospun fibrous membranes is of great value.This work reports a simple and effective way to develop flexible and porous transparent fibrous membranesMoreover, this study demonstrated that transparent and conductive membranes can be fabricated based on

Keywords： Transparent     Electrospun fibrous membranes     Porous structure     Mechanical pressing     Conductivity    

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Transparent exopolymer particles (TEPs)-associated protobiofilm: A neglected contributor to biofouling

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1361-7

Abstract:

• Bacteria could easily and quickly attached onto TEP to form protobiofilms.

Keywords： Transparent exopolymer particles (TEPs)     TEP-protobiofilm     Bacteria attachment     Biofouling of membrane    

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Title Author Date Type Operation

Model test and discrete element method simulation of shield tunneling face stability in transparent clay

Huayang LEI, Yajie ZHANG, Yao HU, Yingnan LIU

Journal Article

Bearing and uplift capacities of under-reamed piles in soft clay underlaid by stiff clay using lower-bound

Mantu MAJUMDER, Debarghya CHAKRABORTY

Journal Article

Model testing of tripod caisson foundations in silty clay subjected to eccentric lateral loads

Journal Article

Behavior of compacted clay-concrete interface

R. R .SHAKIR, Jungao ZHU

Journal Article

Preparation of transparent BaSO

Le Fang, Qian Sun, Yong-Hong Duan, Jing Zhai, Dan Wang, Jie-Xin Wang

Journal Article

Analysis of cement-treated clay behavior by micromechanical approach

Dong-Mei ZHANG, Zhen-Yu YIN, Pierre-Yves HICHER, Hong-Wei HUANG

Journal Article

ImgFS: a transparent cryptography for stored images using a filesystem in userspace

Osama A. KHASHAN,Abdullah M. ZIN,Elankovan A. SUNDARARAJAN

Journal Article

Utilizing transparent and conductive SnO

Jing Gu, Hongtao Yu, Xie Quan, Shuo Chen, Junfeng Niu

Journal Article

Experimental investigation of the influence on static and cyclic deformation of structural soft clay

CHEN Yunmin, CHEN Yingping, HUANG Bo

Journal Article

Synthesis, characterization and assessment thermal properties of clay based nanopigments

Mohammad Banimahd KIEVANI, Milad EDRAKI

Journal Article

Ultimate bearing capacity of strip footing resting on clay soil mixed with tire-derived aggregates

Journal Article

Optimized porous clay heterostructure for removal of acetaldehyde and toluene from indoor air

Pu ZHAO,Lizhong ZHU

Journal Article

From resource sharing to service sharing: opportunities and challenges of transparent computing

Zhang Yaoxue,Zhou Yuezhi

Journal Article

Transformation of Fibrous Membranes from Opaque to Transparent Under Mechanical Pressing

Chao Wang, Jing Zhao, Liu Liu, Peng Zhang, Xianfeng Wang, Jianyong Yu, Bin Ding

Journal Article

Transparent exopolymer particles (TEPs)-associated protobiofilm: A neglected contributor to biofouling

Journal Article