Pub Date : 2026-02-01Epub Date: 2025-10-22DOI: 10.1016/j.geotexmem.2025.10.002
Yu-qiu Ye , Jie Han , Brad Dolton , Robert L. Parsons
Lightweight cellular concrete (LCC) has great potential to be used as a backfill material for buried pipes due to its low self-weight, high strength, and good thermal insulation properties. However, the shear bond strength between LCC and plastic pipes and its load-bearing capacity over these pipes have not been well studied. This study conducted pushout tests to investigate the shear bond strengths between LCCs at densities ranging from 400 to 650 kg/m3 and smooth polyvinyl chloride, high-density polyethylene, and steel pipes. To take advantage of the test specimens, bearing capacity tests were conducted to evaluate the bearing capacities of the LCCs over pipes. Test results indicate that the steel pipe exhibited a higher shear bond strength than the plastic pipes and the LCC density did not significantly impact the peak shear bond strength. The measured ultimate bearing capacities of LCCs were close to their unconfined compressive strengths and the calculated results using Meyerhof's method based on the cohesion from small direct shear tests. In addition, LCC at a density of 400 kg/m3 showed a shear failure pattern, while LCC at densities of 475, 550, and 650 kg/m3 exhibited a splitting failure pattern.
{"title":"Experimental study on shear bond strength and bearing capacity of lightweight cellular concrete fill around plastic pipes","authors":"Yu-qiu Ye , Jie Han , Brad Dolton , Robert L. Parsons","doi":"10.1016/j.geotexmem.2025.10.002","DOIUrl":"10.1016/j.geotexmem.2025.10.002","url":null,"abstract":"<div><div>Lightweight cellular concrete (LCC) has great potential to be used as a backfill material for buried pipes due to its low self-weight, high strength, and good thermal insulation properties. However, the shear bond strength between LCC and plastic pipes and its load-bearing capacity over these pipes have not been well studied. This study conducted pushout tests to investigate the shear bond strengths between LCCs at densities ranging from 400 to 650 kg/m<sup>3</sup> and smooth polyvinyl chloride, high-density polyethylene, and steel pipes. To take advantage of the test specimens, bearing capacity tests were conducted to evaluate the bearing capacities of the LCCs over pipes. Test results indicate that the steel pipe exhibited a higher shear bond strength than the plastic pipes and the LCC density did not significantly impact the peak shear bond strength. The measured ultimate bearing capacities of LCCs were close to their unconfined compressive strengths and the calculated results using Meyerhof's method based on the cohesion from small direct shear tests. In addition, LCC at a density of 400 kg/m<sup>3</sup> showed a shear failure pattern, while LCC at densities of 475, 550, and 650 kg/m<sup>3</sup> exhibited a splitting failure pattern.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"54 1","pages":"Pages 136-145"},"PeriodicalIF":6.2,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145362313","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}
The construction of geosynthetic encased columns for embankment support involving the tube driving technique may induce vertical and horizontal stresses throughout the soft soil foundation and neighboring columns, which is often not accounted for in design. Investigating this unknown effect is a difficult task for which the use of the transparent soil method is a promising tool when combined with Digital Image Correlation (DIC) techniques. This study investigates the effect of GEC column installation on the deformation of the soft foundation soil. The specific focus is on how the driving process affects the lateral and vertical deformations of the surrounding soft soil, as well as the interaction with neighboring columns. Different column configurations, spacing, and installation sequences were investigated. After evaluation and quantification of the deformation patterns, a methodology is proposed to study the extent of displacements caused by the tube's driving. Results showed that an increase in the spacing between columns reduced the influence of the tube's driving. Interestingly, adopting the alternating GEC installation may lead to higher lateral displacements than the sequential installation process. Increasing the number of GECs from three to four elements further reduced the displacements magnitude in the region adjacent to the first column installed.
{"title":"Effect of the driving process for construction of geotextile-encased columns on the deformation of soft foundation soils","authors":"H.P. Souza , G.L.S. Araújo , J.G. Zornberg , F.H.M. Portelinha","doi":"10.1016/j.geotexmem.2025.09.006","DOIUrl":"10.1016/j.geotexmem.2025.09.006","url":null,"abstract":"<div><div>The construction of geosynthetic encased columns for embankment support involving the tube driving technique may induce vertical and horizontal stresses throughout the soft soil foundation and neighboring columns, which is often not accounted for in design. Investigating this unknown effect is a difficult task for which the use of the transparent soil method is a promising tool when combined with Digital Image Correlation (DIC) techniques. This study investigates the effect of GEC column installation on the deformation of the soft foundation soil. The specific focus is on how the driving process affects the lateral and vertical deformations of the surrounding soft soil, as well as the interaction with neighboring columns. Different column configurations, spacing, and installation sequences were investigated. After evaluation and quantification of the deformation patterns, a methodology is proposed to study the extent of displacements caused by the tube's driving. Results showed that an increase in the spacing between columns reduced the influence of the tube's driving. Interestingly, adopting the alternating GEC installation may lead to higher lateral displacements than the sequential installation process. Increasing the number of GECs from three to four elements further reduced the displacements magnitude in the region adjacent to the first column installed.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"54 1","pages":"Pages 67-84"},"PeriodicalIF":6.2,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145267358","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}
Pub Date : 2026-02-01Epub Date: 2025-09-16DOI: 10.1016/j.geotexmem.2025.09.002
Yipeng Guo , Dahao Zou , Min Hu , Xiong Zhang , Fang Xu , Yongjie Zhang , Jiejing Chen
Silt is widely used in subgrade construction in the middle and lower reaches of the Yellow River in China due to limited availability of high-quality fill. However, its high moisture sensitivity and low strength often lead to pumping, settlement, and deformation. This study investigates the hydraulic performance of a wicking geotextile in silt under simulated rainfall infiltration using one-dimensional soil column experiments. Three installation configurations were evaluated: (i) a control sample (CS) without geotextile, (ii) an embedded sample (ES) with the geotextile fully installed as a capillary barrier, and (iii) a surface-exposed sample (SES) with the geotextile extended to the atmosphere to improve drainage. Suction-volumetric moisture content relationships were monitored at multiple depths, and both water storage capacity and drainage mechanisms were assessed. Results indicate that ES and SES reached stabilization at similar suction thresholds, however, the SES more effectively delayed saturation and facilitated moisture migration by evaporation. Surface exposure induced a relative humidity gradient, generating suction and improving drainage, while a siphon effect redistributed water approximately 25 cm below and 15 cm above the geotextile. These findings confirm that the wicking geotextile can act as a capillary barrier and drainage medium, and provide guidance for silty subgrade design.
{"title":"Influence of wicking geotextile installation on moisture migration in silt under rainfall infiltration","authors":"Yipeng Guo , Dahao Zou , Min Hu , Xiong Zhang , Fang Xu , Yongjie Zhang , Jiejing Chen","doi":"10.1016/j.geotexmem.2025.09.002","DOIUrl":"10.1016/j.geotexmem.2025.09.002","url":null,"abstract":"<div><div>Silt is widely used in subgrade construction in the middle and lower reaches of the Yellow River in China due to limited availability of high-quality fill. However, its high moisture sensitivity and low strength often lead to pumping, settlement, and deformation. This study investigates the hydraulic performance of a wicking geotextile in silt under simulated rainfall infiltration using one-dimensional soil column experiments. Three installation configurations were evaluated: (i) a control sample (CS) without geotextile, (ii) an embedded sample (ES) with the geotextile fully installed as a capillary barrier, and (iii) a surface-exposed sample (SES) with the geotextile extended to the atmosphere to improve drainage. Suction-volumetric moisture content relationships were monitored at multiple depths, and both water storage capacity and drainage mechanisms were assessed. Results indicate that ES and SES reached stabilization at similar suction thresholds, however, the SES more effectively delayed saturation and facilitated moisture migration by evaporation. Surface exposure induced a relative humidity gradient, generating suction and improving drainage, while a siphon effect redistributed water approximately 25 cm below and 15 cm above the geotextile. These findings confirm that the wicking geotextile can act as a capillary barrier and drainage medium, and provide guidance for silty subgrade design.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"54 1","pages":"Pages 25-35"},"PeriodicalIF":6.2,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145103277","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}
Pub Date : 2026-02-01Epub Date: 2025-10-29DOI: 10.1016/j.geotexmem.2025.10.007
Qian Liu , Hongjun Jing , Di Wang
Inorganic binder-stabilized bases often suffer from insufficient lateral confinement and poor fatigue resistance, limiting pavement longevity. This study aims to enhance their mechanical behavior and durability using a geogrid-reinforced graded crushed stone base (GCS-GR). A multi-scale evaluation integrating Discrete Element Method (DEM) simulations, laboratory fatigue testing, field monitoring, and life-cycle cost analysis was conducted. Results show that geogrid reinforcement alleviates stress concentration and deflection instability under high-void conditions by forming a lateral force-chain network. Laboratory tests demonstrate that the single-layer structure (GCS-GR1) increases ultimate flexural strength and failure displacement by 31 % and 44 %, respectively. Under a high stress level ( = 0.8) corresponding to 80 % of the ultimate flexural strength, the fatigue life increases nearly threefold. Field monitoring reveals reduced deflection, rutting, and Pavement Condition Index (PCI) degradation rates of 31.6 %, 36.6 %, and 47.9 %, respectively. The vertical-to-transverse strain ratio decreased by 47 %, in good agreement with DEM predictions (3.1 % deviation), confirming the reliability of the DEM model. Furthermore, life-cycle cost analysis indicates that GCS-GR1 has the lowest total present value, reducing costs by approximately 8 % compared to the GCS. Overall, GCS-GR effectively enhances structural stability, fatigue life, and long-term economic sustainability of pavement bases.
{"title":"Mechanical and economic performance of geogrid-reinforced base pavements: An integrated numerical, experimental, and field study","authors":"Qian Liu , Hongjun Jing , Di Wang","doi":"10.1016/j.geotexmem.2025.10.007","DOIUrl":"10.1016/j.geotexmem.2025.10.007","url":null,"abstract":"<div><div>Inorganic binder-stabilized bases often suffer from insufficient lateral confinement and poor fatigue resistance, limiting pavement longevity. This study aims to enhance their mechanical behavior and durability using a geogrid-reinforced graded crushed stone base (GCS-GR). A multi-scale evaluation integrating Discrete Element Method (DEM) simulations, laboratory fatigue testing, field monitoring, and life-cycle cost analysis was conducted. Results show that geogrid reinforcement alleviates stress concentration and deflection instability under high-void conditions by forming a lateral force-chain network. Laboratory tests demonstrate that the single-layer structure (GCS-GR1) increases ultimate flexural strength and failure displacement by 31 % and 44 %, respectively. Under a high stress level (<span><math><mrow><mi>σ</mi><mo>/</mo><msub><mi>σ</mi><mi>f</mi></msub></mrow></math></span> = 0.8) corresponding to 80 % of the ultimate flexural strength, the fatigue life increases nearly threefold. Field monitoring reveals reduced deflection, rutting, and Pavement Condition Index (PCI) degradation rates of 31.6 %, 36.6 %, and 47.9 %, respectively. The vertical-to-transverse strain ratio decreased by 47 %, in good agreement with DEM predictions (3.1 % deviation), confirming the reliability of the DEM model. Furthermore, life-cycle cost analysis indicates that GCS-GR1 has the lowest total present value, reducing costs by approximately 8 % compared to the GCS. Overall, GCS-GR effectively enhances structural stability, fatigue life, and long-term economic sustainability of pavement bases.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"54 1","pages":"Pages 146-160"},"PeriodicalIF":6.2,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145382487","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}
Pub Date : 2026-02-01Epub Date: 2025-11-06DOI: 10.1016/j.geotexmem.2025.10.010
Jianting Feng , Yang Shen , Wencheng Qi , Wen Shi , He Yang
The absence of multi-physics modelling frameworks limits the optimisation of electrokinetic geosynthetics (EKG) assisted vacuum preloading combined with electroosmosis (VPE) technique for the consolidation and remediation of dredged sediments. A multi-physics coupling model was therefore developed that integrates electrical, hydraulic, mechanical, and chemical fields to simulate the consolidation and remediation processes in VPE. EKG assisted VPE experiments were conducted to verify this model. Results for electric field intensity, excess pore water pressure, settlement and Cu concentrations showed that the model accurately captured both consolidation and remediation behaviour in VPE treatment. Numerical results further revealed that electrical conductivity variations led to uneven distribution of electric potential. Electric potential was concentrated near the anode over time, subsequently influencing electroosmotic flow and electromigration. The dissipation of excess pore water pressure within the dredged sediments was promoted by VPE through the formation of negative pressure. At the anode, the dissipation of excess pore water pressure and the transport of Cu were primarily controlled by electrical conductivity variations, whereas at the cathode, excess pore water pressure dissipation and Cu accumulation were predominantly influenced by clogging.
{"title":"Numerical modelling of dredged sediment improvement under electrokinetic geosynthetics assisted vacuum preloading combined with electroosmosis","authors":"Jianting Feng , Yang Shen , Wencheng Qi , Wen Shi , He Yang","doi":"10.1016/j.geotexmem.2025.10.010","DOIUrl":"10.1016/j.geotexmem.2025.10.010","url":null,"abstract":"<div><div>The absence of multi-physics modelling frameworks limits the optimisation of electrokinetic geosynthetics (EKG) assisted vacuum preloading combined with electroosmosis (VPE) technique for the consolidation and remediation of dredged sediments. A multi-physics coupling model was therefore developed that integrates electrical, hydraulic, mechanical, and chemical fields to simulate the consolidation and remediation processes in VPE. EKG assisted VPE experiments were conducted to verify this model. Results for electric field intensity, excess pore water pressure, settlement and Cu concentrations showed that the model accurately captured both consolidation and remediation behaviour in VPE treatment. Numerical results further revealed that electrical conductivity variations led to uneven distribution of electric potential. Electric potential was concentrated near the anode over time, subsequently influencing electroosmotic flow and electromigration. The dissipation of excess pore water pressure within the dredged sediments was promoted by VPE through the formation of negative pressure. At the anode, the dissipation of excess pore water pressure and the transport of Cu were primarily controlled by electrical conductivity variations, whereas at the cathode, excess pore water pressure dissipation and Cu accumulation were predominantly influenced by clogging.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"54 1","pages":"Pages 209-223"},"PeriodicalIF":6.2,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145461888","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}
Pub Date : 2026-02-01Epub Date: 2025-10-15DOI: 10.1016/j.geotexmem.2025.09.003
Xiaocong Cai , Ling Zhang , Zijian Yang , Jinpeng Tan , Shao Yue
Geogrid-encased stone columns (GESCs) have shown notable potential in improving performance, thereby reducing the seismic failure probability (PF) of soil. This research proposes a limit equilibrium-based formulation for predicting the ultimate seismic bearing capacity (qu) of GESC composite foundations. Subsequently, a fragility analysis framework is developed based on the bearing capacity formula to quantify PF. The fragility analysis incorporates machine learning to evaluate the influence of tensile strength (T), column diameter (Dc), column and soil strength parameters (φc, cc, φs, and cs), shear strength utilization ratio (n), area replacement ratio (m), vertical load demand (Pv), footing width (B), footing embedded depth (h0), and seismic coefficients (kh and kv). Results demonstrate that encasement substantially enhances qu and reduces earthquake-induced settlements. The fragility function demonstrates a critical behavioral transition at n ≈ 0.5. PF decreases with increasing T, m, φc, cc, φs, cs, B, and h0, but increases with kv, Dc, and Pv. The significant impact and indeterminacy of soil properties suggest PF shall be reduced by selecting the controllable parameters (e.g., T and Dc). Larger B improves load diffusion, and increased h0 maximizes vertical effective stress. Large Dc delays confinement mobilization, potentially reducing the reinforcement effectiveness and increasing the failure risk.
{"title":"Seismic bearing capacity and fragility analysis of geogrid-encased stone column composite foundations","authors":"Xiaocong Cai , Ling Zhang , Zijian Yang , Jinpeng Tan , Shao Yue","doi":"10.1016/j.geotexmem.2025.09.003","DOIUrl":"10.1016/j.geotexmem.2025.09.003","url":null,"abstract":"<div><div>Geogrid-encased stone columns (GESCs) have shown notable potential in improving performance, thereby reducing the seismic failure probability (<em>P</em><sub><em>F</em></sub>) of soil. This research proposes a limit equilibrium-based formulation for predicting the ultimate seismic bearing capacity (<em>q</em><sub>u</sub>) of GESC composite foundations. Subsequently, a fragility analysis framework is developed based on the bearing capacity formula to quantify <em>P</em><sub><em>F</em></sub>. The fragility analysis incorporates machine learning to evaluate the influence of tensile strength (<em>T</em>), column diameter (<em>D</em><sub><em>c</em></sub>), column and soil strength parameters (<em>φ</em><sub>c</sub>, <em>c</em><sub>c</sub>, <em>φ</em><sub>s</sub>, and <em>c</em><sub>s</sub>), shear strength utilization ratio (<em>n</em>), area replacement ratio (<em>m</em>), vertical load demand (<em>P</em><sub>v</sub>), footing width (<em>B</em>), footing embedded depth (<em>h</em><sub>0</sub>), and seismic coefficients (<em>k</em><sub><em>h</em></sub> and <em>k</em><sub><em>v</em></sub>). Results demonstrate that encasement substantially enhances <em>q</em><sub><em>u</em></sub> and reduces earthquake-induced settlements. The fragility function demonstrates a critical behavioral transition at <em>n</em> ≈ 0.5. <em>P</em><sub><em>F</em></sub> decreases with increasing <em>T</em>, <em>m</em>, <em>φ</em><sub>c</sub>, <em>c</em><sub>c</sub>, <em>φ</em><sub>s</sub>, <em>c</em><sub>s</sub>, <em>B</em>, and <em>h</em><sub>0</sub>, but increases with <em>k</em><sub>v</sub>, <em>D</em><sub><em>c</em></sub>, and <em>P</em><sub>v</sub>. The significant impact and indeterminacy of soil properties suggest <em>P</em><sub><em>F</em></sub> shall be reduced by selecting the controllable parameters (e.g., <em>T</em> and <em>D</em><sub><em>c</em></sub>). Larger <em>B</em> improves load diffusion, and increased <em>h</em><sub>0</sub> maximizes vertical effective stress. Large <em>D</em><sub><em>c</em></sub> delays confinement mobilization, potentially reducing the reinforcement effectiveness and increasing the failure risk.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"54 1","pages":"Pages 99-114"},"PeriodicalIF":6.2,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145324471","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}
Pub Date : 2026-02-01Epub Date: 2025-10-18DOI: 10.1016/j.geotexmem.2025.10.003
Jun Wang , Chenglong Gu , Hongtao Fu , Long Wang , Junfeng Ni , Ziyang Gao , Xueyu Geng
To investigate the effect of PVD installation depth on the efficiency of surcharge preloading for soft ground improvement, centrifuge model tests were conducted based on a typical airport runway project. Four test groups were designed with PVD installation depths of 18, 22, 26, and 30 m. Key indicators, including settlement, pore-water pressure, water content, and undrained shear strength, were monitored to systematically analyze the influence of PVD depth variation on soil consolidation behavior. The results showed that with each 4 m increase in PVD depth, the settlement increment was 10.39 %, 4.44 %, and 0.81 %, respectively. When the installation depth exceeded 22 m, the improvement effect tended to plateau. Therefore, under the conditions of this project, the reasonable installation depth of PVDs lies within the range of 18–22 m, while the precise optimal depth still requires further investigation. Based on one-dimensional and multidimensional consolidation theories, this study proposed a settlement prediction method that converts multi-stage surcharge into an equivalent single-stage load through stress-time integration correction. The predicted results agreed well with the experimental data, with errors in shallow and deep settlement controlled within 5.3 % and 11.6 %, respectively, both within the acceptable range for engineering applications.
{"title":"Centrifuge model study on the influence of PVD installation depth under surcharge preloading","authors":"Jun Wang , Chenglong Gu , Hongtao Fu , Long Wang , Junfeng Ni , Ziyang Gao , Xueyu Geng","doi":"10.1016/j.geotexmem.2025.10.003","DOIUrl":"10.1016/j.geotexmem.2025.10.003","url":null,"abstract":"<div><div>To investigate the effect of PVD installation depth on the efficiency of surcharge preloading for soft ground improvement, centrifuge model tests were conducted based on a typical airport runway project. Four test groups were designed with PVD installation depths of 18, 22, 26, and 30 m. Key indicators, including settlement, pore-water pressure, water content, and undrained shear strength, were monitored to systematically analyze the influence of PVD depth variation on soil consolidation behavior. The results showed that with each 4 m increase in PVD depth, the settlement increment was 10.39 %, 4.44 %, and 0.81 %, respectively. When the installation depth exceeded 22 m, the improvement effect tended to plateau. Therefore, under the conditions of this project, the reasonable installation depth of PVDs lies within the range of 18–22 m, while the precise optimal depth still requires further investigation. Based on one-dimensional and multidimensional consolidation theories, this study proposed a settlement prediction method that converts multi-stage surcharge into an equivalent single-stage load through stress-time integration correction. The predicted results agreed well with the experimental data, with errors in shallow and deep settlement controlled within 5.3 % and 11.6 %, respectively, both within the acceptable range for engineering applications.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"54 1","pages":"Pages 115-128"},"PeriodicalIF":6.2,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145324473","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}
Pub Date : 2026-02-01Epub Date: 2025-11-03DOI: 10.1016/j.geotexmem.2025.10.005
Rawiwan Eakintumas, Warat Kongkitkul
This study presents a method for predicting the long-term stress relaxation (SR) behavior of geogrids using short-term testing combined with the time–temperature superposition (TTS) technique, known as SR-TTS. Two polymer geogrids—polypropylene (PP) and high-density polyethylene (HDPE)—were tested under constant tensile strain at multiple temperatures: 30 °C, 40 °C, and 50 °C for PP; and 30 °C, 37 °C, 44 °C, and 51 °C for HDPE. Master stress relaxation curves were constructed at a reference temperature of 30 °C by horizontally shifting short-term tensile load histories at elevated temperatures along the logarithmic time axis. Using this approach, 12-h tests for PP and 16-h tests for HDPE were extended to 115 and 4000 h, respectively, demonstrating the effectiveness of temperature-accelerated testing. A numerical simulation using the nonlinear three-component (NTC) model was also applied to replicate SR-TTS behavior. The master curves obtained from experimental SR-TTS tests showed excellent agreement with those from NTC-based simulations. Furthermore, both the experimental and simulated master curves closely matched long-term load decrement time histories from conventional stress relaxation (SR-CON) tests. These results confirm that SR-TTS, supported by numerical simulation, offers a reliable and efficient method for predicting long-term stress relaxation behavior of polymer geogrids under varying temperatures.
{"title":"Predicting long-term stress relaxation of geogrids using time–temperature superposition and the nonlinear three-component model","authors":"Rawiwan Eakintumas, Warat Kongkitkul","doi":"10.1016/j.geotexmem.2025.10.005","DOIUrl":"10.1016/j.geotexmem.2025.10.005","url":null,"abstract":"<div><div>This study presents a method for predicting the long-term stress relaxation (SR) behavior of geogrids using short-term testing combined with the time–temperature superposition (TTS) technique, known as SR-TTS. Two polymer geogrids—polypropylene (PP) and high-density polyethylene (HDPE)—were tested under constant tensile strain at multiple temperatures: 30 °C, 40 °C, and 50 °C for PP; and 30 °C, 37 °C, 44 °C, and 51 °C for HDPE. Master stress relaxation curves were constructed at a reference temperature of 30 °C by horizontally shifting short-term tensile load histories at elevated temperatures along the logarithmic time axis. Using this approach, 12-h tests for PP and 16-h tests for HDPE were extended to 115 and 4000 h, respectively, demonstrating the effectiveness of temperature-accelerated testing. A numerical simulation using the nonlinear three-component (NTC) model was also applied to replicate SR-TTS behavior. The master curves obtained from experimental SR-TTS tests showed excellent agreement with those from NTC-based simulations. Furthermore, both the experimental and simulated master curves closely matched long-term load decrement time histories from conventional stress relaxation (SR-CON) tests. These results confirm that SR-TTS, supported by numerical simulation, offers a reliable and efficient method for predicting long-term stress relaxation behavior of polymer geogrids under varying temperatures.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"54 1","pages":"Pages 175-189"},"PeriodicalIF":6.2,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145434301","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}
Pub Date : 2026-02-01Epub Date: 2025-09-16DOI: 10.1016/j.geotexmem.2025.08.011
Tengyun Xue , Liang Xiao , Pengpeng Ni , Runxing Rao , Chaofeng Zeng , Guoxiong Mei
In modern geotechnical engineering, geotextile-integrated flexible casings have gained prominence over conventional steel counterparts for concrete containment in karst pile construction, primarily due to their economic advantages and operational simplicity. However, the dynamic behavior of casing lateral pressure development during concrete placement—a fundamental design consideration—has not been thoroughly elucidated, creating uncertainties in engineering practice. This study systematically investigates three key operational parameters through laboratory experiments: casing material characteristics, permeability performance, and concrete placement methods. The research yields two critical advancements: (1) Casing material and discontinuous casting significantly govern the maximum lateral pressure, whereas permeability predominantly regulates post-placement pressure dissipation patterns. Engineering specifications should therefore emphasize the integration of low-strain geotextiles with permeability characteristics and discontinuous placement methods. (2) An innovative predictive model has been developed, synthesizing material properties, permeability performance, and concrete placement methods. Field tests in a karst region show that the proposed model reduces lateral pressure estimates by 42 % compared to traditional hydrostatic designs while maintaining structural safety. These findings establish essential guidelines for performance-oriented design of flexible geotextile containment systems in geologically complex environments.
{"title":"Predictive modeling of lateral pressure in geotextile flexible casings for karst pile construction","authors":"Tengyun Xue , Liang Xiao , Pengpeng Ni , Runxing Rao , Chaofeng Zeng , Guoxiong Mei","doi":"10.1016/j.geotexmem.2025.08.011","DOIUrl":"10.1016/j.geotexmem.2025.08.011","url":null,"abstract":"<div><div>In modern geotechnical engineering, geotextile-integrated flexible casings have gained prominence over conventional steel counterparts for concrete containment in karst pile construction, primarily due to their economic advantages and operational simplicity. However, the dynamic behavior of casing lateral pressure development during concrete placement—a fundamental design consideration—has not been thoroughly elucidated, creating uncertainties in engineering practice. This study systematically investigates three key operational parameters through laboratory experiments: casing material characteristics, permeability performance, and concrete placement methods. The research yields two critical advancements: (1) Casing material and discontinuous casting significantly govern the maximum lateral pressure, whereas permeability predominantly regulates post-placement pressure dissipation patterns. Engineering specifications should therefore emphasize the integration of low-strain geotextiles with permeability characteristics and discontinuous placement methods. (2) An innovative predictive model has been developed, synthesizing material properties, permeability performance, and concrete placement methods. Field tests in a karst region show that the proposed model reduces lateral pressure estimates by 42 % compared to traditional hydrostatic designs while maintaining structural safety. These findings establish essential guidelines for performance-oriented design of flexible geotextile containment systems in geologically complex environments.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"54 1","pages":"Pages 14-24"},"PeriodicalIF":6.2,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145103276","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}
A novel hydrotalcite-coated geosynthetic sorption sheet shows potential for managing geogenic contamination in excavated soils and rocks. Employed in an attenuation layer, it retains contaminants in leachate before infiltration into surrounding soil. This study evaluates the arsenic (As) sorption efficiency and water distribution performance of this geosynthetic material to assess its field applicability. Batch experiments were conducted across a pH range of 3–9, temperatures of 5–40 °C, and with co-existing ions (HCO3−, SO42− at 0–500 mg/L). Results demonstrated effective removal of both As(III) and As(V), with higher efficiency for As(V). While pH, co-existing ions, and temperature had minimal effect on As(V) removal, they significantly influenced As(III) removal. Specifically, As(III) sorption efficiency decreased by 15 % as pH decreased from 9 to 3. The presence of HCO3− and SO42− reduced As(III) removal due to competition for sorption sites. Removal efficiency slightly improved at 40 °C due to the endothermic nature of the sorption process. Soil tank experiments indicated that soil particle size was the dominant factor controlling water retention and drainage patterns. Coarse sand promoted concentrated flow, while finer sands enhanced retention and dispersion. The geosynthetic sorption sheet showed only a limited hydraulic influence under the tested conditions.
{"title":"Sorption and water distribution performances of a geosynthetic sheet used in naturally contaminated soils management","authors":"Yu Zhang , Yosuke Kinoshita , Tomohiro Kato , Atsushi Takai , Takeshi Katsumi","doi":"10.1016/j.geotexmem.2025.09.001","DOIUrl":"10.1016/j.geotexmem.2025.09.001","url":null,"abstract":"<div><div>A novel hydrotalcite-coated geosynthetic sorption sheet shows potential for managing geogenic contamination in excavated soils and rocks. Employed in an attenuation layer, it retains contaminants in leachate before infiltration into surrounding soil. This study evaluates the arsenic (As) sorption efficiency and water distribution performance of this geosynthetic material to assess its field applicability. Batch experiments were conducted across a pH range of 3–9, temperatures of 5–40 °C, and with co-existing ions (HCO<sub>3</sub><sup>−</sup>, SO<sub>4</sub><sup>2−</sup> at 0–500 mg/L). Results demonstrated effective removal of both As(III) and As(V), with higher efficiency for As(V). While pH, co-existing ions, and temperature had minimal effect on As(V) removal, they significantly influenced As(III) removal. Specifically, As(III) sorption efficiency decreased by 15 % as pH decreased from 9 to 3. The presence of HCO<sub>3</sub><sup>−</sup> and SO<sub>4</sub><sup>2−</sup> reduced As(III) removal due to competition for sorption sites. Removal efficiency slightly improved at 40 °C due to the endothermic nature of the sorption process. Soil tank experiments indicated that soil particle size was the dominant factor controlling water retention and drainage patterns. Coarse sand promoted concentrated flow, while finer sands enhanced retention and dispersion. The geosynthetic sorption sheet showed only a limited hydraulic influence under the tested conditions.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"54 1","pages":"Pages 1-13"},"PeriodicalIF":6.2,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145005410","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}
扫码关注我们
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号