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Nonlinear creep consolidation of vertical drain-improved soft ground with time-dependent permeable boundary under linearly construction load Geotext. Geomembr. (IF 4.7) Pub Date : 2024-09-19 Penglu Cui, Hongyuan Fang, Fuming Wang, Wengui Cao, Xingyi Zhang, Bocheng Peng, Huixin Li, Shao Yue, Jiachao Zhang
This paper presents an upgraded nonlinear creep consolidation model for VDI soft ground, incorporating a modified UH relation to capture soil creep deformation. Key novelties also include considering linear construction loads, TDP boundary conditions, and Swartzendruber's flow in the small strain consolidation domain. The system was solved using the implicit finite difference method, and numerical
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Microstructural characteristics and prediction of hydraulic properties of geotextile envelopes via image analysis and pore network modeling Geotext. Geomembr. (IF 4.7) Pub Date : 2024-09-17 Hang Li, Jingwei Wu, Chenyao Guo, Haoyu Yang, Zhe Wu, Shuai Qin
In this study, the microstructural characteristics of geotextile envelopes were investigated via two-dimensional (2D) and three-dimensional (3D) image analysis. A pore network model was constructed to predict the hydraulic properties of the geotextile envelopes. Based on image analysis, the representative domain size of the geotextile envelopes was estimated and was further confirmed by pore network
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Characteristics of electro-osmosis consolidation and resistivity evolution in soft clay reinforced with recycled carbon fibers Geotext. Geomembr. (IF 4.7) Pub Date : 2024-09-17 Guanyu Chen, Lingwei Zheng, Xunli Zhang, Guoqiang Wu, Cheng Feng, Xudong Zheng, Xinyu Xie
This study repurposed discarded carbon fiber fabric by mechanically cutting it into short-cut carbon fibers and utilized these fibers in electro-osmosis experiments with varying lengths (5 mm, 10 mm, and 15 mm) and mixing ratios (0.05%, 0.10%, and 0.25%). The results indicated that increasing the length and mixing ratio of recycled carbon fibers effectively reduced the soil resistivity. Furthermore
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Application of the non-linear three-component model for simulating accelerated creep behavior of polymer-alloy geocell sheets Geotext. Geomembr. (IF 4.7) Pub Date : 2024-09-13 Yang Zhao, Hanqing Xiao, Ling Chen, Penghui Chen, Zheng Lu, Chuxuan Tang, Hailin Yao
The polymer-alloy geocell sheets (PAGS) represent a novel geocell material developed to replace conventional geocell materials. Accelerated creep testing, a convenient and precise performance evaluation method, presents a viable alternative to traditional creep testing for obtaining long-term creep strains. Nonetheless, there is a lack of prediction and in-depth exploration of accelerated creep testing
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Freeze-thaw impacts on geocell-stabilized bases considering effects of water supply and compaction Geotext. Geomembr. (IF 4.7) Pub Date : 2024-09-13 Mian Huang, Sanat K. Pokharel, Minghao Liu, Cheng Lin
Although Novel Polymeric Alloy (NPA) geocells have been applied to stabilize road bases against the freeze-thaw (F-T) damage in practice, the relevant research lags the application. A scarcity of research has been reported to comprehensively evaluate the benefits of geocell stabilization in enhancing the F-T performance of bases. This study aims to investigate quantitatively the F-T performance of
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Improvements in vacuum-surcharge preloading combined with electro-osmotic consolidation on soft clayey soil with high water content Geotext. Geomembr. (IF 4.7) Pub Date : 2024-09-12 Lei Zhang, Haihui Jin, Yandong Lv, Binhui Wang, Zhongze Jia, Fangyu Hou, Chen Fang, Liyan Wang, Dandan Jin
This study conducted laboratory tests on soft clayey soils to investigate the effectiveness of the combinations of vacuum-surcharge preloading and electro-osmotic treatment (EOC-VPM-SPM). To minimize the loss of vacuum pressure and mitigate clogging of the drainage system during the consolidation process, two improved methods were developed by optimizing technical characteristics and geometric layout
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Analytical model and stress behavior of consolidated load bearing geotextile tubes Geotext. Geomembr. (IF 4.7) Pub Date : 2024-09-12 Hyeong-Joo Kim, Voltaire Anthony Corsino Jr., Tae-Woong Park, Tae-Eon Kim
Accurately predicting stress-strain characteristics is crucial to ensuring the regulated capacity and controlled deformation of the tubes during and after construction. However, research on the shear strength of geotextile tubes under surcharge loading, especially after dewatering, is insufficient. This study proposes an analytical model with a Stress-State Boundary (SSB) and Yield Function to comprehensively
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Unveiling the reinforcement benefits of innovative textured geogrids Geotext. Geomembr. (IF 4.7) Pub Date : 2024-09-09 Hasthi Venkateswarlu, G. Madhavi Latha
The smooth surface texture of the commercially available geogrids limits the shear strength mobilization at the interfaces. This study presents the design, manufacturing, and interface performance evaluation of innovative textured geogrids. Geogrids with square, triangular, and hexagonal apertures with and without inherent surface texture were manufactured through additive manufacturing (3D printing)
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Vibration response of closely spaced footings protected by use of rubber sheet: An in-situ investigation Geotext. Geomembr. (IF 4.7) Pub Date : 2024-09-09 S.N. MoghaddasTafreshi, R. Zakeri, A.R. Dawson
It is essential to protect sensitive equipment located in the vicinity of vibration sources (VS). As the well-known method of using wave barriers is ineffective to protect facilities that are located very close to a VS, in this study the effect of a thin rubber sheet to protect a nearby foundation (NF) was assessed. This was achieved experimentally at a site using a semi-large scale machine foundation
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Tensile behavior of needle-punched nonwoven geotextiles based on in-situ X-ray computed tomography and numerical simulation Geotext. Geomembr. (IF 4.7) Pub Date : 2024-08-28 Ke-Yi Li, Xiao-Wu Tang, Min-Liang Fei, Shi-jin Feng, Jia-jie Tang, Qing-Qing Xiang, Heng-yu Wang
There are situations where geotextiles are subjected to uniaxial tensile strain, which may result in noticeable variations in their filtration performance. This study accordingly investigated the behaviors of needle-punched nonwoven geotextiles during tensile testing using in-situ X-ray computed tomography. Furthermore, a numerical analysis of the variation in pore size characteristics was performed
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Research on the aging mechanism of polypropylene nonwoven geotextiles under simulated heavy metal aging scenarios Geotext. Geomembr. (IF 4.7) Pub Date : 2024-08-27 Yuqi Peng, Zongqiang Zhu, Jun Zhang, Yinian Zhu, Lihao Zhang, Yinming Fan, Xiaobin Zhou, Shen Tang, Yusheng Lu, Wenqian Li, Yifan Xin
We conducted accelerated aging experiments on two types of polypropylene (PP) nonwoven geotextiles (filament geotextile and staple fiber geotextile), immersing them in five different simulated liquids at temperatures of 25 °C, 55 °C, and 85 °C for 200 days. At 85 °C and a pH of 1, the tensile strength and elongation at break of PP filament materials decreased by 95% and 86%, respectively. The presence
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Analytical model of three-dimensional concentric ellipsoidal soil arching in geosynthetic-reinforced pile-supported embankments Geotext. Geomembr. (IF 4.7) Pub Date : 2024-08-27 Rong Sun, Xin Jiang, Lei Zhang, Canyang Cui, Zhengxian Li, Yanjun Qiu
The geosynthetic-reinforced pile-supported (GRPS) embankment is an effective method for improving soft ground, widely adopted in engineering applications. In this paper, a concentric ellipsoidal soil arching model was proposed to describe the stress distribution within the GRPS embankment. An analytical solution for soil arching efficacy was derived by solving the loads acting on the pile caps and
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Dynamic response and damage of pile-geogrid composite reinforced high-speed railway subgrade under seismic actions Geotext. Geomembr. (IF 4.7) Pub Date : 2024-08-24 Changwei Yang, Xianqing Xu, Mao Yue, Guangpeng Chen, Shiguang Zhou, Hao Wen, Liming Qu
In this study, the dynamic response and damage mode of a pile-geogrid composite reinforced high-speed railway subgrade under seismic action were investigated based on a unidirectional shaking table test. Various seismic waves were applied to the subgrade, allowing for an analysis of acceleration, dynamic soil pressure, displacement, and strain responses. The displacement field of the subgrade was visualized
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Parameters affecting performance of fully instrumented model testing of strip footings on geocell-reinforced soils Geotext. Geomembr. (IF 4.7) Pub Date : 2024-08-21 Sarper Demirdogen, Ayhan Gurbuz, Kaan Yunkul
A thorough study was conducted to assess the performance of the strip footing reinforced with geocells in sand, focusing on understanding the enhancement effects and geocell reinforcement mechanisms. Critical factors such as geocell modulus, height, soil relative density and load eccentricity were examined through fully instrumented model tests. Measurements included surface displacement profiles,
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Laboratory evaluation of wicking geotextile for moisture reduction in silty sands at different fines contents Geotext. Geomembr. (IF 4.7) Pub Date : 2024-08-20 Md Wasif Zaman, Jie Han, Mozaher Ul Kabir, Robert L. Parsons
The effect of fines content on the performance of the wicking geotextile is not clear. This study developed a simple moisture reduction test method to quantify the effectiveness of the wicking geotextile in reducing moisture in silty sands at four different fines contents and four different waiting periods. The sand was prepared at an initial moist condition based on its average field moisture capacity
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Investigation of soil arching in GRPS embankments under localized loading: Multi-span spring-based trapdoor model test Geotext. Geomembr. (IF 4.7) Pub Date : 2024-08-17 Jie Zhou, Ling Zhang, Mengchao Deng, Zeyu Xu, Shuai Zhou, Wenzhe Peng
A novel multi-span spring-based trapdoor apparatus has been developed to simulate more realistically the coupling of piles, soft soil, and geosynthetics, as well as the intricate interactions between adjacent soil arches under localized loading within geo-reinforced pile-supported (GRPS) embankments. By employing movable blocks with varying spring stiffnesses, this study advances the understanding
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Improving clay-geogrid interaction: Enhancing pullout resistance with recycled concrete aggregate encapsulation Geotext. Geomembr. (IF 4.7) Pub Date : 2024-08-06 Sajedeh Malek Ghasemi, Seyed Mohammad Binesh, Piltan Tabatabaie Shourijeh
In this study, Recycled Concrete Aggregate (RCA) was employed as a sandwich technique around the geogrid to enhance the pullout resistance of the geogrid in clayey backfills. Large-scale pullout tests were conducted on three configurations: geogrid-reinforced clay, geogrid-reinforced RCA, and geogrid sandwiched between layers of RCA, aimed at investigating pullout resistance and deformation. The experiments
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Creep rupture behaviour of elastomeric bituminous geomembrane seams Geotext. Geomembr. (IF 4.7) Pub Date : 2024-08-04 Jiying Fan, R. Kerry Rowe
The short-term and long-term performance of bituminous geomembrane (BGM) seams are examined using both small-scale and large-scale tests. Different BGM products, different sustained tensile loads, different weld qualities, and different overburden stresses are examined. The BGM seams are shown to be very susceptible to creep rupture under sustained tensile loads. Time to rupture and strain at rupture
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Evaluating the mechanisms and performance of Geosynthetic-Reinforced Load Transfer Platform of pile-supported embankments design methods Geotext. Geomembr. (IF 4.7) Pub Date : 2024-08-03 M. Nobahar, M.Y. Abu-Farsakh, M. Izadifar
This study evaluates the existing design methods of Geosynthetic-Reinforced Load Transfer Platform for Pile-Supported Embankments (GLTP-PSE) through comprehensive 3D Finite Element (FE) analyses. It scrutinizes the assumed arching mechanisms, methodologies, design criteria (arching height, maximum strain, differential settlement, and T in geosynthetics), and overall performance of these methods. The
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Experimental evaluation on in-soil water migration reducing performance of restraining moisture geotextile (RMG) Geotext. Geomembr. (IF 4.7) Pub Date : 2024-07-30 Yilin Wang, Xinzhuang Cui, Qing Jin, Xiaoning Zhang, Linzhao Ding, Guoyang Lu
Engineering materials such as geosynthetics clay liners (GCL) and gravel layers are effective to cut off the in-soil water migration and have been widely employed to stabilize the moisture content of subgrades. However, the moisture stabilizing performance of GCL or gravel layer is usually compromised due to the complexity of service condition. This paper introduces an engineering material named restraining
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Application of the digital image correlation technique in wide width tensile test of geogrids Geotext. Geomembr. (IF 4.7) Pub Date : 2024-07-27 Wooseok Shin, Chungsik Yoo
This paper aims to explore the DIC technique for use in wide width tensile testing of geogrids, from specimen preparation to selection of DIC parameters required for analysis to provide a guide for a proper use. A series of monotonically loaded wide width tensile tests were conducted on a PET geogrid to investigate the effects of specimen surface preparation methods and the user-defined DIC parameters
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DEM modeling of installation damage of geogrids under rockfill compaction condition Geotext. Geomembr. (IF 4.7) Pub Date : 2024-07-18 Kaifeng Zeng, Guike Zhang, Yuting Zhang, Wei Jin, Farong Liang, Huabei Liu
To investigate the installation damage of geogrids during roller compaction under rockfill condition, a three-dimensional discrete element model for roller compaction of geogrid-reinforced rockfill was established. The rockfill was modeled by irregular rigid block elements, while the geogrids were modeled by bonding basic ball elements. The model parameters were then calibrated by triaxial consolidated-drained
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Seismic analysis of geosynthetic-reinforced soil walls in tiered configuration Geotext. Geomembr. (IF 4.7) Pub Date : 2024-07-18 Bin Ge, Fei Zhang, Shuang Shu
Research on geosynthetic-reinforced soil (GRS) walls in tiered configurations is increasing gaining attention, with numerical methods being predominantly used in the past. In recent years, there has been a growing trend in conducting shaking table tests to further explore this area. However, traditional limit equilibrium (LE) methods are more preferred for design purposes. This study utilized a modified
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Modifying ASTM E96 to assess water vapour transmission rates of geomembranes at high temperatures Geotext. Geomembr. (IF 4.7) Pub Date : 2024-07-10 Sadib Bin Kabir, Abdelmalek Bouazza, Mohammed Faizal
This paper presents a novel methodology for assessing water vapour transmission rates (WVTRs) through geomembranes across a wide temperature range, from 20 °C to 90 °C. This expands upon the existing ASTM E96 standard, limited to temperatures up to 32 °C. The study focused on 1.5 mm thick high-density polyethylene (HDPE) and polyvinyl chloride-ethylene interpolymer alloy (PVC-EIA) geomembranes. The
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Centrifuge model tests on performance of MSE walls with different facing types Geotext. Geomembr. (IF 4.7) Pub Date : 2024-07-04 Ting Li, Yi Zhong, Peng Xu, Guangqing Yang, Guanlu Jiang
The role of wall facing is crucial in the design of MSE walls. This study employed two centrifuge model tests specifically designed to analyze walls with two distinct facing types: full-height panel facing and modular block facing. Additionally, surcharge loads were applied to these MSE walls to simulate real-world conditions. The findings from these tests revealed that MSE walls with full-height panel
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Analytical assessment of pullout capacity of reinforcements in unsaturated soils Geotext. Geomembr. (IF 4.7) Pub Date : 2024-06-28 Mahmoud Ghazavi, Abbas Mahboobi
The effective interaction mechanisms in the pullout resistance of reinforcements include skin friction mobilized at the soil-solid surface, soil-soil shear resistance, and compressive resistance created against transverse elements. The third component is obtained from passive lateral pressure (LPM) or bearing capacity (BCM) methods. An analytical solution is proposed to determine the pullout capacity
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3D DEM investigation of shear behavior and interaction mechanism of woven geotextile-sand interfaces Geotext. Geomembr. (IF 4.7) Pub Date : 2024-06-24 Yafei Jia, Jun Zhang, Yewei Zheng
This paper presents a numerical study on the investigation of microscopic mechanism governing the interaction of woven geotextile and angular sand employing the 3D discrete element method (DEM). The surface texture and tensile properties of the geotextile were simulated using overlapping spherical particles, and the angular sand was simulated using rigid blocks. The DEM models were fully calibrated
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A new large-scale shear apparatus for testing geosynthetics-soil interfaces incorporating thermal condition Geotext. Geomembr. (IF 4.7) Pub Date : 2024-06-13 Zhiming Chao, Gary Fowmes, Ahmad Mousa, Jiaxin Zhou, Zengfeng Zhao, Jinhai Zheng, Danda Shi
Geosynthetics-soil interfaces are exposed to varying temperatures coupled with complex stress states. Quantifying the mechanical response of the interface considering this combined influence of temperature and complex stress is always a huge challenge. This study proposes a new displacement and stress-loading static and dynamic shear apparatus that is capable of testing the geosynthetics-soil interfaces
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Study of design parameters for staged-filled slurry treated by prefabricated horizontal drains under vacuum preloading Geotext. Geomembr. (IF 4.7) Pub Date : 2024-06-12 Ding-Bao Song, Yu Pan, Wen-Bo Chen, Pei-Chen Wu, Jian-Hua Yin
The method of using Prefabricated Horizontal Drains (PHDs) placed in layers under vacuum preloading can significantly speed up consolidation of staged-filled soil slurry. The PHDs can settle with the soil slurry and maintain their shape/pattern and dewatering capacity largely in comparison with Prefabricated Vertical Drains (PVDs). This study presents a field trial focused on treating dredged sediments
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Theoretical and experimental studies on air-inflated rubber dam anchored on sidewall of the rigid base Geotext. Geomembr. (IF 4.7) Pub Date : 2024-06-09 Wei Guo, Xin Gao, Wenfang Guo, Yuxiao Ren, Lei Dai
A theoretical study was conducted to investigate the cross-sectional configurations and the tensile forces of an air-inflated rubber dam anchored on the sidewall of the rigid base. A series of large-scale model tests were conducted using rubber dam models with a cross-sectional perimeter of 1.0 m and a length of 8.5 m. The results obtained from the analytical solutions agree well with those obtained
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Large-scale experimental and ANN modeling for dynamic interaction between vibrating and statically loaded foundations on geogrid-reinforced soil beds Geotext. Geomembr. (IF 4.7) Pub Date : 2024-06-08 Gobinda Das, Priyanka Ghosh
The present investigation includes experimental and ANN-based intelligent modeling to explore the dynamic interference effect of closely positioned vibrating foundations placed on unreinforced and geogrid-reinforced soil beds. Large-scale field block vibration tests are conducted on isolated and interacting block footings placed on prepared foundation beds at IIT Kanpur, India. The dynamic interaction
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Behavior of surface loaded clay foundation reinforced by GESCs with lateral geosynthetic cushion under freeze-thaw cycles Geotext. Geomembr. (IF 4.7) Pub Date : 2024-06-05 Zi-Ang Gu, Jian-Feng Chen, Chungsik Yoo
The efficiency of geosynthetics has been proven in stone column-reinforced foundations. In this paper, loading tests were conducted on three stone column-reinforced foundations, experiencing four freeze-thaw cycles. The effects of geosynthetic encasement and lateral reinforcement were investigated on the behavior of ordinary stone column (OSC) – reinforced and geosynthetic encased stone column (GESC)
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Experimental and theoretical studies on deformation characteristics of Geosynthetic-Reinforced Soil (GRS) abutments induced by vertical loads Geotext. Geomembr. (IF 4.7) Pub Date : 2024-06-03 Qingming Wang, Chao Xu, Panpan Shen, Geye Li, Chongxi Zhao
This study conducted five centrifuge model tests to investigate the deformation characteristics of the Geosynthetics Reinforced Soil (GRS) abutments under vertical loads, considering the setback distance and beam seat width as two major influencing factors. Test results show that a linear correlation existed between the maximum lateral facing displacements and the maximum settlements at the top of
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Investigation of load transfer mechanisms in reinforced cohesive soil embankments in case of subsidence using DEM Geotext. Geomembr. (IF 4.7) Pub Date : 2024-05-25 Maria Delli Carpini, Pascal Villard, Fabrice Emeriault
Cavity formations by soil dissolution or underground collapses are at the origin of large surface subsidence that constitutes a risk of damage or failure for infrastructures. Soil reinforcement with geosynthetics positioned at shallow depth is an economical and functional solution to reduce the induced surface settlements. Previous research has mainly focused on the load transfer mechanism and the
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Hydraulic conductivity of bentonite-polymer geosynthetic clay liners to aggressive solid waste leachates Geotext. Geomembr. (IF 4.7) Pub Date : 2024-05-24 Dong Li, Hanrui Zhao, Kuo Tian
Hydraulic conductivity of conventional mock sodium bentonite (Na–B) and bentonite-polymer (B–P) geosynthetic clay liners (GCLs) were evaluated with three synthetic leachates that are chemically representative of aggressive leachates from coal combustion product (CCR) (I = 3179 mM), mining waste (MW) (I = 2127 mM, pH = 2.0), and municipal solid waste incineration ash landfill (MSWI) (I = 2590 mM). The
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Experimental study on dewatering and reinforcement of dredged slurry treated by PHDs-PVDs under step vacuum preloading Geotext. Geomembr. (IF 4.7) Pub Date : 2024-05-22 Kang Yang, Mengmeng Lu, Jinxin Sun, Ganbin Liu
Nowadays, the utilization of prefabricated vertical drains (PVDs) or prefabricated horizontal drains (PHDs) in combination with vacuum preloading (VP) has emerged as a prevalent and effective strategy for treating dredged slurry. Nevertheless, both of these methods possess certain inherent limitations. In this study, three groups of parallel model experiments are conducted to compare the effectiveness
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Evaluation of dynamic soil stress distribution in GRS bridge abutments subjected to cyclic loading Geotext. Geomembr. (IF 4.7) Pub Date : 2024-05-17 Yafei Jia, Chuan-Bao Xu, Jun Zhang, Jun-jie Zheng, Yewei Zheng
Traffic-induced cyclic loading generates repetitive stresses and cumulative deformations on the GRS abutments, which affect the serviceability of GRS abutments. To evaluate the stress distribution of GRS abutments under cyclic traffic loading, this paper presents reduced-scale GRS abutment models constructed with sand backfill and geogrid reinforcements. The GRS abutment models were subjected to staged
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Predictive model for the interface bond strength of geosynthetic-reinforced asphalt layers Geotext. Geomembr. (IF 4.7) Pub Date : 2024-05-17 M.P.S. Silva, J.G. Zornberg, N.S. Correia
Innovation in the use of geosynthetics in roadway applications has resulted in the development of several different products, such as asphalt reinforcement geogrids and paving mats to minimize reflective cracks and limit moisture infiltration. For a proper performance of the reinforced asphalt systems, an adequate interface bond strength has proven to be crucial. However, the influence of the different
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Effects of bag characteristics and channel side slope on incipient motion of a single Geobag under river current loading Geotext. Geomembr. (IF 4.7) Pub Date : 2024-05-17 Kendra White, Yuntong She, Knut Oberhagemann, Angela Thompson, Wenming Zhang
Geobag stability has not been extensively studied under river current loading. In this study, the impacts of geobag characteristics (shape, bag material, and fill ratio of sand) and channel side slope (flat and 1V:2H) on a single geobag's stability were systematically investigated in a physical model to form the solid foundation for the research of group geobags. Overall, a geobag with a higher fill
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Field evaluation of moisture-suction regime and modulus of geosynthetic-reinforced soil wall with geo-composite side-drain Geotext. Geomembr. (IF 4.7) Pub Date : 2024-05-16 Susit Chaiprakaikeow, Apiniti Jotisankasa, Washirawat Praphatsorn, Avishek Shrestha, Sawek Cheento, Sony Pramusandi, Pragith Chaisri, Shinya Inazumi
Geosynthetic-reinforced soil (GRS) walls built on hillslopes are more increasingly incorporated with geo-composite side drain in order to prevent the side-seepage entering the fill. This study evaluates the long-term moisture, pore-water pressure, and shear modulus, of a 6.5 m-high geogrid-reinforced soil wall in western Thailand. Through extensive field monitoring and in-situ spectral analysis of
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Effects of rockfall shape on deformation performance of ground reinforced embankments subjected to lateral impact Geotext. Geomembr. (IF 4.7) Pub Date : 2024-05-16 Liang Xiao, Liang Lu, Lanxing Li, Zongjian Wang, Katsuhiko Arai
Ground reinforced embankment (GRE) is an economical and efficient protection measure against rockfalls. In various design guidelines of ground reinforced embankments, the impact force of the rockfall is the principal factor, which is significantly affected by rockfall shape. This article conducts real scale tests and numerical tests to observe the external deformation behavior and the internal dynamic
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Influence of secondary reinforcements on the behavior of geosynthetic reinforced soil walls Geotext. Geomembr. (IF 4.7) Pub Date : 2024-05-03 Fuxiu Li, Wenhao Guo, Yewei Zheng
This paper presents numerical simulations to investigate the influence of secondary reinforcements on the behavior of geosynthetic reinforced soil (GRS) walls under static loading. Simulations were conducted using a finite difference program to model an instrumented field GRS wall with secondary reinforcements. Simulated results are in good agreement with field measurements, including facing displacements
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Plastic shakedown limit of geosynthetic reinforced coarse-grained soil: Experiments and prediction model Geotext. Geomembr. (IF 4.7) Pub Date : 2024-04-30 Dongjie Zhang, Kai Cui, Qionglin Li, Shangchuan Yang, Pangju Li, Zhifeng Wu, Xiaohao Li, Jinhong Xie
This study aims to explore the accumulated behavior of reinforced coarse-grained soils through cyclic triaxial tests and to develop a prediction model for the plastic shakedown limit. Cyclic triaxial test results illustrate that the reinforced specimens, especially those incorporating geocells, demonstrate the lowest accumulated axial strain and the highest plastic shakedown limit when compared to
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Long-term hydraulic conductivity of bentonite-polymer geosynthetic clay liners Geotext. Geomembr. (IF 4.7) Pub Date : 2024-04-30 Hanrui Zhao, Dong Li, Kuo Tian
Hydraulic conductivity tests were conducted on six bentonite-polymer (B–P) geosynthetic clay liners (GCLs) to investigate the effect of the slow cation exchange process and polymer elution on the long-term hydraulic conductivity of B–P GCLs. Tests were conducted up to 1458 days and as many as 443 pore volumes of flows (PVFs). Three B–P GCLs consist of linear polymer whereas the other three have crosslinked
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Optimum tack coat rate for different asphalt geosynthetic interlayers to achieve optimum shear bond strength Geotext. Geomembr. (IF 4.7) Pub Date : 2024-04-26 N.S. Correia, M.P.S. Silva, A. Shahkolahi
Designing geosynthetics for asphalt overlay is challenging due to the diversity of paving composites and paving geogrids available on the market. Challenges remains on the ideal product and tack coat to avoid debonding failure and to increase bonding quality. This research evaluates interface shear strength properties of geosynthetic-asphalt concrete specimens using seven geosynthetic interlayers tested
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Locating leaks in geomembrane-lined ponds using the electrical leak location method: Case histories Geotext. Geomembr. (IF 4.7) Pub Date : 2024-04-26 Priscila Zidan, Matthew Kemnitz, Elisabeth Ritter
Results from seven years of electrical leak location methods applied to geomembrane-lined ponds to locate leaks are presented. Inspections were conducted on 195 projects designed with single (n = 74), double (n = 120), or triple (n = 1) liners. These projects are located in the U.S.A. (n = 159), Canada (n = 30), and Mexico (n = 11). All inspections were conducted on full ponds, which resulted in the
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Three-dimensional numerical analysis of large-scale horizontal square anchors in geogrid-reinforced sand Geotext. Geomembr. (IF 4.7) Pub Date : 2024-04-24 Sougata Mukherjee, G.L. Sivakumar Babu
This paper presents a comprehensive three-dimensional numerical investigation of horizontal square anchors embedded in geogrid-reinforced sand. Prior experimental studies have demonstrated notable enhancements in anchor uplift capacity when placed below geogrid reinforcement in soil. However, these results are limited to small anchor plates tested in laboratory conditions with over-reinforced sand
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Transport parameters for PFOA and PFOS migration through GCL's and composite liners used in landfills Geotext. Geomembr. (IF 4.7) Pub Date : 2024-04-18 Farah B. Barakat, R. Kerry Rowe, David Patch, Kela Weber
The effect of applied stress (20, 60, and 150 kPa) on the diffusion of perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) through a geosynthetic clay liner (GCL) is examined. The diffusion coefficients deduced from GCL diffusion tests for PFOA and PFOS decrease linearly with decreasing final bulk GCL void ratio (increasing applied stresses). The different components of the same GCL
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2D failure mechanisms and failure modes of a new type of geotextile tubes used for river dikes Geotext. Geomembr. (IF 4.7) Pub Date : 2024-04-16 Berit Finklenburg, Elena-Maria Klopries, Holger Schüttrumpf
A new type of small, dry-filled geotextile tubes is introduced, that, in a stacked formation, can be used as dike cores. Dikes made out of these tubes consist of great potential regarding more resilient flood protection. The geotextile protects the fill from erosion, enabling steeper slopes along with reduced material and less land consumption. The behavior and potential failure mechanisms of such
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Investigation on the static performance of geogrid reinforced aeolian sand railway embankment: Field test and discrete element simulation Geotext. Geomembr. (IF 4.7) Pub Date : 2024-04-12 Wei Du, Rusong Nie, Yanlu Qi, Bo Ruan, Fan Mo
To enhance the mechanical properties and stability of desert railway embankments, the utilization of geogrids has proven to be an effective measure. The article conducted field tests and discrete element simulations to thoroughly examine the static performance of embankments reinforced with geogrids. The study systematically explored the macroscopic and microscopic characteristics of the geogrid-reinforced
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Experimental study on the improvement of sludge by vacuum preloading-stepped electroosmosis method with prefabricated horizontal drain Geotext. Geomembr. (IF 4.7) Pub Date : 2024-04-09 Xiaoya Bian, Haodong Yang, Hui Liu, Zhiyao Xu, Rongjun Zhang
To improve the defects of low electroosmosis efficiency in the later stage and high energy consumption of conventional vacuum preloading combined with electroosmosis, the vacuum preloading-stepped electroosmosis method (VP-SEO) with prefabricated horizontal drain (PHD) was proposed for dredged sludge in this paper. In the test, waste concrete fine aggregate was used as the horizontal drainage cushion
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Effective stiffness matrix calculation of geocell layer and reinforcement mechanism analysis of geocell reinforced embankment Geotext. Geomembr. (IF 4.7) Pub Date : 2024-04-09 Changjun Yin, Jingjing He, Ahmed Adam Khalifa Gowi, Zhuo Li, Chenhang Zhou
The anisotropic effective stiffness matrix (ESM) of the unit cell (UC) of a geocell layer with different laying modes (denoted by ), which cannot be measured directly by conventional tests but can be obtained by the mathematical homogenization method (MHM) on the UC of the geocell layer, is needed in simulation and design of geocell reinforced embankment. The components of the ESM are divided into
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New simple method for calculating large-strain consolidation settlement of layered soft soils with horizontal drains and vacuum preloading with comparison to test data Geotext. Geomembr. (IF 4.7) Pub Date : 2024-04-05 Ze-jian Chen, Peng-lin Li, An Li, Jian-hua Yin, Ding-bao Song
Prefabricated horizontal drains and vacuum preloading have advantages in the consolidation of ultra-soft dredged sludge and soils for maintenance dredging, reclamation, and ground improvement in coastal regions. While laboratory tests and field trial projects have been reported, a convenient analysis and design method is still unavailable. This study proposes a new simple method for the settlement
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Using strain hardening to predict the stress crack resistance of unaged and aged smooth black HDPE geomembranes Geotext. Geomembr. (IF 4.7) Pub Date : 2024-04-04 M. Ali, R. Kerry Rowe, F.B. Abdelaal
The correlation between the single-point notched constant tensile load-stress crack resistance (SP-NCTL SCR) Test (ASTM D5397; Appendix) of smooth high density polyethylene (HDPE) geomembranes and their strain hardening modulus is investigated for both unaged and aged specimens. The strain hardening modulus was calculated based on the (force-elongation) raw data from the tensile strength test conducted
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Numerical modelling of reinforced fill over a void considering rate-dependent stiffness of the reinforcement Geotext. Geomembr. (IF 4.7) Pub Date : 2024-04-02 Fahimeh M. Naftchali, Richard J. Bathurst
The problem of a reinforced fill over a void has been the subject of much research in the geosynthetics literature. Previous studies have mainly focused on finding closed-form solutions to predict the tensile loads and strains in the reinforcement layer once a void develops below the fill. In this paper, a 2D finite difference (FLAC) model that implements the hyperbolic isochronous load-strain model
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Evaluation of arched EPS block and geocell inclusions in trench backfill for protection of buried flexible pipes Geotext. Geomembr. (IF 4.7) Pub Date : 2024-03-30 S.N. Moghaddas Tafreshi, N. Joz Darabi, M. Azizian, B.C. O'Kelly, A. Faramarzi
This paper presents an experimental investigation examining the novel idea of employing curved expanded-Polystyrene (EPS) blocks that arch around the upper section of buried flexible pipes to reduce the pressures acting on them and hence resulting deformation/deflections. Large-scale testing was performed to examine key performance indicators for reinstated trenches with buried 250-mm diameter plastic
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Experimental investigation of the geometry of geocell on the performance of flexible pavement under repeated loading Geotext. Geomembr. (IF 4.7) Pub Date : 2024-03-27 Sayanti Banerjee, Bappaditya Manna, J.T. Shahu
To evaluate the benefit of geocells of different geometrical configurations for pavement application, full-scale instrumented model tests were performed on pavement sections reinforced with geocells of different geometrical configurations subjected to monotonic and repeated loading. The responses studied were stress distribution in different pavement layers, induced strains in geocell walls, and settlement
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Introduction to a novel geotextile tube connection construction method: A case study of test site and field application Geotext. Geomembr. (IF 4.7) Pub Date : 2024-03-27 Hyeong-Joo Kim, Myoung-Soo Won, Shamsher Sadiq, Tae-Woong Park, Hyeong-Soo Kim, Young-Soung Jeong, Jun-Yong Park, Tae-Eon Kim
One particular challenge in constructing geotextile tubes is ensuring proper alignment and leveling, especially when connecting them in a series. This study introduces a novel connection configuration to address this challenge by inserting an auxiliary tube between two main tubes. The proposed connection method offers the advantage of consolidating individual geotextile tubes into a unified structure
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Seismic bearing capacity of strip footings placed on reinforced soil slopes using slip line method Geotext. Geomembr. (IF 4.7) Pub Date : 2024-03-15 Majd Tarraf, Ehsan Seyedi Hosseininia
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Experimental evaluation of geosynthetic-modular block connection loads Geotext. Geomembr. (IF 4.7) Pub Date : 2024-03-13 F.H.M. Portelinha, P.V.C. Figueiredo, J.G. Zornberg
The design of segmental geosynthetic mechanically stabilized walls with masonry block facing is often governed by the loads that develop at the connection between the facing and geosynthetic. Yet the current understanding of the mechanisms involved in the mobilization of such connection loads is, at best, incomplete. The testing apparatus developed as part of this study facilitates simulating the transference