Geotextiles and Geomembranes最新文献_第6页

Investigation of geogrid-reinforced unbound granular material behavior using constant radial stiffness triaxial tests 用恒定径向刚度三轴试验研究土工格栅加筋松散颗粒材料的性能

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2025-02-08 DOI: 10.1016/j.geotexmem.2025.01.007

Ziheng Wang, Yue Chen, Yuekai Xie, Jianfeng Xue

{"title":"Investigation of geogrid-reinforced unbound granular material behavior using constant radial stiffness triaxial tests","authors":"Ziheng Wang, Yue Chen, Yuekai Xie, Jianfeng Xue","doi":"10.1016/j.geotexmem.2025.01.007","DOIUrl":"10.1016/j.geotexmem.2025.01.007","url":null,"abstract":"<div><div>A series of constant radial stiffness triaxial (CRST) tests were performed to investigate the long-term behavior of geogrid-reinforced unbound granular materials (UGMs). Two types of multi-stage cyclic loading tests were conducted with various vertical constant loads (<span><math><mrow><msub><mi>σ</mi><mrow><mn>1</mn><mo>,</mo><mi>min</mi></mrow></msub></mrow></math></span>). In the first type, <span><math><mrow><msub><mi>σ</mi><mrow><mn>1</mn><mo>,</mo><mi>min</mi></mrow></msub></mrow></math></span> was maintained at 10% of the maximum axial stress at each loading stage to determine the resilient modulus. The results indicated that the inclusion of geogrid increased the resilient modulus by 21–25 MPa under various cyclic loads. In the second type of tests, three tests were performed with <span><math><mrow><msub><mi>σ</mi><mrow><mn>1</mn><mo>,</mo><mi>min</mi></mrow></msub></mrow></math></span> of 5, 10, and 20 kPa, respectively, to investigate the effects of vertical constant loads on the contributions of geogrids to the confining stress and permanent deformation. The results showed that the inclusion of geogrid mitigated permanent deformation by enhancing the confining stress. However, an adverse effect of the geogrid on permanent deformation was observed when <span><math><mrow><msub><mi>σ</mi><mrow><mn>1</mn><mo>,</mo><mi>min</mi></mrow></msub></mrow></math></span> was 5 kPa, which can be attributed to the loss of contact between the geogrid and aggregates. Furthermore, R-values and stress paths obtained in this study also demonstrated the capability of CRST tests in quantifying the effects of geogrids on UGMs under cyclic loadings.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 3","pages":"Pages 728-743"},"PeriodicalIF":4.7,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143349965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Estimation of the carbon sequestration potential of ecological retaining structures: A comparative study 生态围护结构固碳潜力估算：比较研究

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2025-01-27 DOI: 10.1016/j.geotexmem.2025.01.003

Yuming Zhu , Fei Zhang , Junjun Ni , Shilin Jia

{"title":"Estimation of the carbon sequestration potential of ecological retaining structures: A comparative study","authors":"Yuming Zhu , Fei Zhang , Junjun Ni , Shilin Jia","doi":"10.1016/j.geotexmem.2025.01.003","DOIUrl":"10.1016/j.geotexmem.2025.01.003","url":null,"abstract":"<div><div>In the pursuit of sustainable development, the environmental impacts of geotechnical engineering are often neglected. The utilization of geosynthetic-reinforced soil (GRS) and ecological slope protection technology presents promising and eco-friendly alternatives, paving the way for a cleaner future. In this study, the temporal and spatial distribution of the carbon coefficient (CC) and embodied energy coefficient (EEC) are characterized through data analysis. Subsequently, the impact of spatial factors on the total embodied carbon (TEC) is considered. Finally, the carbon sequestration effect of vegetation through photosynthesis is quantified to examine the long-term environmental impact of the selected design options. The findings suggest that embodied carbon (EC) is preferable as an indicator for environmental impact assessment. The GRS technology can effectively mitigate approximately one-third of the environmental impacts compared to conventional methods. Furthermore, when combined with vegetation, GRS technology can achieve net-zero emissions approximately 30 years after the construction of the ecological retaining structure. Although many factors are not considered in this study, the results may inform initial decisions to realize more sustainable infrastructure.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 3","pages":"Pages 697-712"},"PeriodicalIF":4.7,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143055324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Experimental study on the vacuum consolidation of recycled fibre-improved soft soils assisted with prefabricated vertical drain 预制竖向排水辅助下再生纤维改良软土真空固结试验研究

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2025-01-20 DOI: 10.1016/j.geotexmem.2025.01.002

Kai Lou , Zhen-Yu Yin , Ding-Bao Song , Wei-Feng Huang

{"title":"Experimental study on the vacuum consolidation of recycled fibre-improved soft soils assisted with prefabricated vertical drain","authors":"Kai Lou , Zhen-Yu Yin , Ding-Bao Song , Wei-Feng Huang","doi":"10.1016/j.geotexmem.2025.01.002","DOIUrl":"10.1016/j.geotexmem.2025.01.002","url":null,"abstract":"<div><div>Billions of face masks were discarded daily, causing severe environmental concerns. Recycling waste face masks presents a significant challenge. Meanwhile, the traditional vacuum preloading shows limitations on the performance on soft soil ground. This paper investigates the potential benefits of reusing Face-Mask Fibres (FMF) as an admixture to enhance the treatment effects of vacuum preloading on soft soils. The performance of an environmentally biodegradable type of Prefabricated Vertical Drain (PVD) is also compared with that of conventional PVD through a series of laboratory physical model tests. The settlement, distributions of vacuum pressure, porewater pressure, and water content were monitored. In addition, after vacuum preloading, the undrained shear strength of treated soil was determined. Scanning electron microscope tests were also carried out to analyse the microscopic structure of treated soil. Results reveal that face-mask fibres significantly improved the performances of vacuum preloading in terms of vacuum dewatering and strengthening. Furthermore, the rate of vacuum consolidation was accelerated due to the additional drainage channels provided by recycled face-mask fibres. Notably, the final water content of the treated soil decreased to 41.8%, which is markedly lower than the liquid limit of 63.9%. The undrained shear strength exhibited considerable improvement, nearly doubling in value. The mechanism of how FMF works was also discussed.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 3","pages":"Pages 681-696"},"PeriodicalIF":4.7,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143020134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of perforation characteristics and geotextile envelopes on the drain pipe 射孔特性及土工布围护结构对排水管的影响

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2025-01-09 DOI: 10.1016/j.geotexmem.2024.12.008

Yingao Zhang , Shaoli Wang , Ruixia Hao

引用次数: 0

Field behavior of a GRS bridge approach retaining wall on highly compressible foundation soils 高压缩性地基土上GRS桥接近挡土墙的场特性

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2024-12-31 DOI: 10.1016/j.geotexmem.2024.12.007

Chunhai Wang , Huabei Liu , Mengyuan Luo , Kui Gao , Juntao Zhu , Kaifeng Zeng

{"title":"Field behavior of a GRS bridge approach retaining wall on highly compressible foundation soils","authors":"Chunhai Wang , Huabei Liu , Mengyuan Luo , Kui Gao , Juntao Zhu , Kaifeng Zeng","doi":"10.1016/j.geotexmem.2024.12.007","DOIUrl":"10.1016/j.geotexmem.2024.12.007","url":null,"abstract":"<div><div>To reveal the behavior of geosynthetic-reinforced soil (GRS) bridge approach retaining walls on highly compressible foundation soils, in this study, a GRS bridge approach adjacent to the Yangtze River was monitored for approximately 3 years during construction and post-construction. The settlement of the GRS bridge approach, the vertical earth pressure at the base of the backfill soil, and the reinforcement deformation were monitored. The monitoring points were arranged on the left and right sides of a cross-section and a longitudinal section at the mid-span. The results showed that the settlement of the GRS bridge approach was large and uneven, and the settlement rates were influenced by the water level of the Yangtze River. Due to the large and differential settlement, the distributions of the vertical earth pressure and geogrid reinforcement strain for a retaining wall constructed on highly compressible foundation soils were different from those for a retaining wall constructed on stable foundation soils. The overall GRS bridge approach performed well with large settlements, with only some minor structural problems in the facing of the retaining wall. This indicated that the flexible GRS bridge approach was a good choice when the retaining wall was constructed on highly compressible foundation soils.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 2","pages":"Pages 630-641"},"PeriodicalIF":4.7,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142905674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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A model for predicting permeability of geotextile envelope for subsurface drainage after combined clogging in arid areas 干旱区复合堵塞后土工布包层地下排水渗透性预测模型

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2024-12-30 DOI: 10.1016/j.geotexmem.2024.12.003

Shuai Qin , Chenyao Guo , Jingwei Wu , Shuai He , Haoyu Yang , Chenzhi Yao , Xinman Jiang , Hang Li

{"title":"A model for predicting permeability of geotextile envelope for subsurface drainage after combined clogging in arid areas","authors":"Shuai Qin , Chenyao Guo , Jingwei Wu , Shuai He , Haoyu Yang , Chenzhi Yao , Xinman Jiang , Hang Li","doi":"10.1016/j.geotexmem.2024.12.003","DOIUrl":"10.1016/j.geotexmem.2024.12.003","url":null,"abstract":"<div><div>This study develops a coupled model for the combined clogging and permeability coefficient of a geotextile envelope. Based on the characteristics of pore size distribution and its impact on permeability coefficient after clogging, a permeability coefficient model assuming the geotextile is composed of multiple layers of planar mesh is developed. Then, based on the range of pore size after clogging, hypotheses for large-pore clogging area and small-pore permeable area are proposed to simulate the process of decreasing the theoretical maximum pore size of the geotextile and the increasing area of large-pore clogging area. The physical and chemical clogging models are coupled and field sampling was used to confirm the availability of the model. Results indicate that the model effectively simulates the impact of clogging on the permeability coefficient. Additionally, sensitivity analysis and trend simulations show that permeability reduction coefficient (<span><math><mrow><msub><mi>β</mi><mn>1</mn></msub></mrow></math></span>), area density (<span><math><mrow><msub><mi>μ</mi><mrow><mi>g</mi><mn>0</mn></mrow></msub></mrow></math></span>), and saturation index (<span><math><mrow><mi>S</mi><mi>I</mi></mrow></math></span>) are the main factors affecting combined clogging and permeability, with <span><math><mrow><msub><mi>β</mi><mn>1</mn></msub></mrow></math></span> and <span><math><mrow><msub><mi>μ</mi><mrow><mi>g</mi><mn>0</mn></mrow></msub></mrow></math></span> having significant early impacts, while <span><math><mrow><mi>S</mi><mi>I</mi></mrow></math></span> has a greater impact in the later stages. When <span><math><mrow><msub><mi>β</mi><mn>1</mn></msub></mrow></math></span> is equal to 0.3 and <span><math><mrow><mi>S</mi><mi>I</mi></mrow></math></span> is greater than 1.0, the geotextile envelope for subsurface drainage faces a high risk of combined clogging.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 2","pages":"Pages 619-629"},"PeriodicalIF":4.7,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142905647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Corrigendum to “A large-size model test study on the consolidation effect of construction waste slurry under self-weight and bottom vacuum preloading” [Geotext. Geomembranes, 53, (1), February 2025, (318–330)] “自重和底部真空预压下建筑废浆固结效果的大型模型试验研究”[土工文本]。土工膜，53,(1),2025,(318-330)]

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2024-12-28 DOI: 10.1016/j.geotexmem.2024.12.004

Wenhao Jiang , Liangtong Zhan , Junyao Lu

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Characteristic pore size of nonwoven geotextiles based on low-field nuclear magnetic resonance technology 基于低场核磁共振技术的非织造土工布孔径特征研究

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2024-12-24 DOI: 10.1016/j.geotexmem.2024.12.005

Xianlei Zhang , Pengpeng Yang , Shaoshuai Ma , Yunyun Wu

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Probabilistic analyses of geosynthetic-reinforced pile-supported embankments using design methods and 3D finite element models considering soil variability 基于设计方法和考虑土壤变异的三维有限元模型的土工合成筋桩支撑路堤概率分析

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2024-12-13 DOI: 10.1016/j.geotexmem.2024.12.002

Ekansh Agarwal , Ning Luo , Kaiwen Liu

{"title":"Probabilistic analyses of geosynthetic-reinforced pile-supported embankments using design methods and 3D finite element models considering soil variability","authors":"Ekansh Agarwal , Ning Luo , Kaiwen Liu","doi":"10.1016/j.geotexmem.2024.12.002","DOIUrl":"10.1016/j.geotexmem.2024.12.002","url":null,"abstract":"<div><div>Geosynthetic-Reinforced Pile-Supported Embankments (GRPSE) are effective composite structures to support highway infrastructures on weak soils. Numerous design methods have been developed in practice to facilitate the use of this technology. However, it is well known that as the design methods adopt different theoretical assumptions, the performance indexes given by the design methods vary significantly. Furthermore, the effect of soil variability on the design outcomes given by the design methods is unknown. These uncertainties present great challenges to design engineers to select the proper design method and consider soil variability. To fill this knowledge gap, we conducted comprehensive probabilistic analyses using typical design methods (BS8006 and CUR226) and 3D finite element models (unit-cell and full-scale) considering soil variability. A well-established case study in the literature was used as a benchmark. Algorithms for the design methods and the 3D finite element models were developed, calibrated and tested in both deterministic and probabilistic scenarios. A detailed probabilistic comparison between the design methods and the 3D finite element models was also carried out. Results show that 1) soil variability affects the performance indexes of GRPSE, including stress reduction ratio, stress concentration ratio, differential settlement, and tensile force of geosynthetics; 2) model uncertainties of design methods can be as high as 46%, due to the assumptions and simplifications made to formulate the solutions; 3) the probabilistic 3D full-scale finite element method is the most robust approach to consider soil variability.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 2","pages":"Pages 559-576"},"PeriodicalIF":4.7,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142840851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Study on the hydraulic properties of internally unstable soil-nonwoven geotextile systems: Boundary values and preliminary estimates 内部不稳定土壤-无纺土工织物系统的水力特性研究：边界值和初步估算

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2024-12-13 DOI: 10.1016/j.geotexmem.2024.11.002

Ennio M. Palmeira , Matheus V. Souza , Dellane S.C. Santos , Ivonne A.M.G. Góngora

{"title":"Study on the hydraulic properties of internally unstable soil-nonwoven geotextile systems: Boundary values and preliminary estimates","authors":"Ennio M. Palmeira , Matheus V. Souza , Dellane S.C. Santos , Ivonne A.M.G. Góngora","doi":"10.1016/j.geotexmem.2024.11.002","DOIUrl":"10.1016/j.geotexmem.2024.11.002","url":null,"abstract":"<div><div>Internally unstable soils can pose severe conditions to granular and geotextile filters in geotechnical engineering works. Regarding the latter, several researchers have investigated the behaviour of such filters in contact with internally unstable soils and severe clogging and flow rate reductions of soil-geotextile filter systems have been observed in several cases. This paper presents a study on the prediction of boundary values for hydraulic properties of nonwoven geotextile filters in cohesionless internally unstable soils. A broad survey on results of filtration tests present in the literature was carried out for the development of a database for the study. The results obtained show that significant reductions in soil-geotextile system permeability coefficient and flow rate may occur independent on the type of test carried out, quite often as a consequence of poor hydraulic behaviour of the soil rather than geotextile filter clogging. The study has identified the level of importance of relevant parameters to assess potential malfunction of the soil-geotextile system and equations were developed to predict lower bound values and estimates of soil-geotextile system permeability coefficient for preliminary analyses.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 2","pages":"Pages 588-606"},"PeriodicalIF":4.7,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142840854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0