Canadian Geotechnical Journal最新文献_第6页

A SHANSEP approach to quantifying the behaviour of clayey soils on a constant shear drained stress path 用SHANSEP方法量化黏质土在恒定剪切排水应力路径上的行为

3区工程技术

Canadian Geotechnical Journal Pub Date : 2023-10-05 DOI: 10.1139/cgj-2022-0473

David Reid, Riccardo Fanni, Andy Fourie

{"title":"A SHANSEP approach to quantifying the behaviour of clayey soils on a constant shear drained stress path","authors":"David Reid, Riccardo Fanni, Andy Fourie","doi":"10.1139/cgj-2022-0473","DOIUrl":"https://doi.org/10.1139/cgj-2022-0473","url":null,"abstract":"Assessing the risk of slope failures of earth structures comprising loose, saturated soils has seen increased focus recently owing to a series of prominent tailings and water dam failures. The potential for the triggering of slope instability by a rising phreatic surface – commonly referred to as the constant shear drained (CSD) stress path – has been well documented over the past few decades for sands and sandy soils under a wide range of loading modes. Alternatively, there has been limited CSD element testing of more clayey soils, with the available data rather showing a dilative tendency through the CSD stress path and mobilised strengths greater than the critical friction ratio, even for specimens commencing CSD shearing from an initially loose state. The current paper expands on the CSD data of clayey soils by testing an iron ore tailings (IOT) and kaolin clay in both triaxial and direct simple shear (DSS) devices, with an emphasis on the DSS. Owing to the tendency for the CSD stress path to result in an overconsolidated condition (i.e. unloading) the tests in the current study were interpreted in the SHANSEP framework given its frequent use to analyse clay behaviour. The results indicated that the SHANSEP framework can reasonably characterise some aspects of CSD behaviour of clays in DSS loading, with some caveats.","PeriodicalId":9382,"journal":{"name":"Canadian Geotechnical Journal","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134947351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Dynamic Response of a Low Plasticity Silt Deposit: Comparison of In-situ and Laboratory Responses 低塑性泥沙沉积物的动力响应:现场和实验室响应的比较

3区工程技术

Canadian Geotechnical Journal Pub Date : 2023-10-05 DOI: 10.1139/cgj-2022-0579

Ali Dadashiserej, Amalesh Jana, Zhongze Xu, Armin W. Stuedlein, T. Matthew Evans, Kenneth H. Stokoe II, Brady R. Cox

{"title":"Dynamic Response of a Low Plasticity Silt Deposit: Comparison of In-situ and Laboratory Responses","authors":"Ali Dadashiserej, Amalesh Jana, Zhongze Xu, Armin W. Stuedlein, T. Matthew Evans, Kenneth H. Stokoe II, Brady R. Cox","doi":"10.1139/cgj-2022-0579","DOIUrl":"https://doi.org/10.1139/cgj-2022-0579","url":null,"abstract":"This study compares the in-situ dynamic response of a low plasticity silt deposit subjected to multidirectional loading from vibroseis shaking and controlled blasting to a suite of element-scale, cyclic laboratory test specimens. The agreement between excess pore pressures and simple shear strain relationships over a wide range in strains is remarkable. Slightly larger excess pore pressures observed in-situ are attributed to three-dimensional loading and pore pressure migration/ redistribution in the shallower portions of the deposit. Noted differences in shear modulus, G, are attributed to strain rate effects, spatial variability in the in-situ stiffness, and hydraulic boundary conditions. The variation in in-situ G/Gmax follows the trend from torsional shear specimens up to 0.4% shear strain; larger strains in the silt deposit imposed by controlled blasting yielded a stiffer response than that from cyclic torsional shear and direct simple shear specimens due in part to field drainage for deeper portions of the deposit. The in-situ cyclic resistance ratio for the deeper portion of the deposit in which plane body waves could be assumed and for the selected excess pore pressure ratio criterion was larger than that of stress-controlled CDSS test specimens, despite the detrimental effect of multidirectional shaking in the field. The effect of strain history, spatial variability, and drainage boundary conditions to drive differences between the in-situ and laboratory test specimens is identified.","PeriodicalId":9382,"journal":{"name":"Canadian Geotechnical Journal","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135482610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Joint analysis of macroscopic response and microfabric evolution of coral sand during earthquake-induced liquefaction 地震液化过程中珊瑚砂宏观响应与微组构演化的联合分析

3区工程技术

Canadian Geotechnical Journal Pub Date : 2023-10-04 DOI: 10.1139/cgj-2022-0512

Qi Wu, Xuanming Ding, Yanling Zhang

{"title":"Joint analysis of macroscopic response and microfabric evolution of coral sand during earthquake-induced liquefaction","authors":"Qi Wu, Xuanming Ding, Yanling Zhang","doi":"10.1139/cgj-2022-0512","DOIUrl":"https://doi.org/10.1139/cgj-2022-0512","url":null,"abstract":"This study addresses the microfabric evolution of coral sand during earthquake-induced liquefaction using the joint tests of macroscopic shaking table and microscopic X-ray computed tomography (μCT). Based on the non-destructive scanning and image reconstruction in 3D, the change in the grain-pore structure of sands under earthquakes is discussed. Furthermore, the special microstructural evolution of coral sand is studied by the contrast tests with Fujian sand. The results show that the coordination number of coral sand is larger than that of Fujian sand after liquefaction, which is consistent with that the reduction in acceleration of coral sand is smaller than that of the Fujian sand, and the coral sand foundation still has a larger shear strength due to the smaller excess pore pressure accumulation. Moreover, the contact index of Fujian sand and Reigate sand fluctuates in a similar range with the change of void ratio and coordination number compared with coral sand. This is due to the fact that the Fujian sand and Reigate sand are both general terrigenous sands (quartz sand), while coral sand has irregular particle shapes and larger surface friction caused by marine biogenesis. The test results deepen the understanding of the liquefaction mechanism of coral sand.","PeriodicalId":9382,"journal":{"name":"Canadian Geotechnical Journal","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135549012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Rapid 3D lidar change detection for geohazard identification using GPU-based alignment and M3C2 algorithms 基于gpu对齐和M3C2算法的快速三维激光雷达变化检测地质灾害识别

3区工程技术

Canadian Geotechnical Journal Pub Date : 2023-10-04 DOI: 10.1139/cgj-2023-0073

Luke Morgan Weidner, Alex Ferrier, Megan van Veen, Matthew J Lato

{"title":"Rapid 3D lidar change detection for geohazard identification using GPU-based alignment and M3C2 algorithms","authors":"Luke Morgan Weidner, Alex Ferrier, Megan van Veen, Matthew J Lato","doi":"10.1139/cgj-2023-0073","DOIUrl":"https://doi.org/10.1139/cgj-2023-0073","url":null,"abstract":"Topographic change detection is increasingly being used to identify and monitor landslides and other geohazards in support of risk-informed decision making. Expanding change detection from site-specific to regional scales enables increasingly proactive asset management and contributes to improving the resilience of infrastructure to extreme events. It is widely known that change detection precision can be improved by applying three-dimensional (3D) algorithms, such as iterative closest point (ICP) and M3C2, directly to raw point clouds. However, this also increases the computational requirements compared to alternatives such as digital elevation model (DEM) differencing (DoD). This study presents a novel graphics processing unit (GPU) based implementation of the ICP-M3C2 workflow to address this limitation. In the proposed algorithm, point cloud data segments are automatically queued and served to the working GPU, which efficiently performs point cloud processing operations, while the central processing unit (CPU) performs data management operations in parallel. The developed method is estimated to be up to 54 times faster than CPU-based versions of the same algorithm. In this paper, we present how the workflow has been applied to six regional-scale landslide identification and monitoring case studies, in which landslides are causing the disruption of pipelines, highways, and rail corridors. Overall, in 2021 and 2022, over 17,500 linear kms of change detection were processed using the demonstrated method.","PeriodicalId":9382,"journal":{"name":"Canadian Geotechnical Journal","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135549147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Design-truck ultimate limit states of buried modular polymer stormwater collection structures 埋地模块化聚合物雨水收集结构的设计与极限状态

3区工程技术

Canadian Geotechnical Journal Pub Date : 2023-10-04 DOI: 10.1139/cgj-2023-0055

Jean-Marc LeBlanc, Richard W.I. Brachman, Arian Zarpeima

{"title":"Design-truck ultimate limit states of buried modular polymer stormwater collection structures","authors":"Jean-Marc LeBlanc, Richard W.I. Brachman, Arian Zarpeima","doi":"10.1139/cgj-2023-0055","DOIUrl":"https://doi.org/10.1139/cgj-2023-0055","url":null,"abstract":"Modular polymer stormwater structures are a relatively new class of buried structure with two horizonal platens supported by vertical columns. While structural demand at design truck loads has been quantified, the ultimate limit state to design tuck loading is unknown. Full-scale physical experiments were conducted to quantify the applied load and identify the mode(s) of failure at the ultimate limit state of three types of modular structures when buried (with 0.6 m soil cover) and subject to static design truck loading. All three module types tested reached an ultimate limit state at applied loads around 3 times the nominal design load, but had different modes of failure. The ultimate resistance for the module with columns having the lowest moment of inertia relative to length squared was caused by column buckling and top platen rupture, while the two modules with nearly twice the moment of inertia relative to length squared failed by top platen rupture and their column forces at most were 70% to 75% of their short-term single column buckling resistance. The results provide new data to allow independent load rating of the buried structure, support continued assessment of column buckling, and identify the need to limit platen bending deflections.","PeriodicalId":9382,"journal":{"name":"Canadian Geotechnical Journal","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135549023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Use of recycled tyre segments to enhance the stability of ballasted track by increased confinement 使用回收轮胎段，通过增加约束来增强有碴轨道的稳定性

3区工程技术

Canadian Geotechnical Journal Pub Date : 2023-10-04 DOI: 10.1139/cgj-2022-0666

Soumyaranjan Mishra, Buddhima Indraratna, Cholachat Rujikiatkamjorn, Trung Ngo

{"title":"Use of recycled tyre segments to enhance the stability of ballasted track by increased confinement","authors":"Soumyaranjan Mishra, Buddhima Indraratna, Cholachat Rujikiatkamjorn, Trung Ngo","doi":"10.1139/cgj-2022-0666","DOIUrl":"https://doi.org/10.1139/cgj-2022-0666","url":null,"abstract":"The most common railway ballast is produced by quarrying, and its mechanical characteristics are crucial for both stability and drainage for safer and faster rail operations. Ballasted tracks have certain drawbacks, primarily because ballast starts to degrade over time. In this regard, reducing the rate of ballast degradation is vital to enhance track longevity and minimise maintenance costs. This paper demonstrates how segments of waste rubber tyres (e.g. 3m in diameter) from the mining industry can improve stability of tracks, while contributing to reduced ballast deformation and degradation. By placing arched segments along the track shoulders beyond the edge of sleepers, the in-situ lateral confining pressure can be increased from 20-25 kPa (standard track) to 40-50 kPa. This novel idea of Confined-Caterpillar Track (CCT) was tested at a prototype physical model (1:1 scale) at the National Facility for the Heavy-haul Railroad Testing (NFHRT), and the experimental outcomes compared to the performance of a conventional track. Apart from constributing to at least 25% saving of quarried aggregates, the test results prove that the CCT concept can curtail the lateral displacement and settlement of the ballast layer, while reducing particle breakage and effecting significant stress reduction in the underlying substructure layers.","PeriodicalId":9382,"journal":{"name":"Canadian Geotechnical Journal","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135549213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Correction: numerical implementation and application of an internal state variable model to analyze the time-dependent behavior of mining excavations in rock salt 修正:数值实现和应用内状态变量模型来分析岩盐中采矿开挖的时间依赖行为

3区工程技术

Canadian Geotechnical Journal Pub Date : 2023-09-21 DOI: 10.1139/cgj-2023-0442

Jonathan D. Aubertin, Michel Aubertin, Abtin Jahanbakhshzadeh

{"title":"Correction: numerical implementation and application of an internal state variable model to analyze the time-dependent behavior of mining excavations in rock salt","authors":"Jonathan D. Aubertin, Michel Aubertin, Abtin Jahanbakhshzadeh","doi":"10.1139/cgj-2023-0442","DOIUrl":"https://doi.org/10.1139/cgj-2023-0442","url":null,"abstract":"Résumé Le comportement géomécanique du sel gemme a été largement étudié au fil des ans. Les différentes études expérimentales ont permis d'identifier des caractéristiques distinctives associées à une réponse inélastique non-linéaire qui est fonction du temps et de l'historique de chargement. Ces caractéristiques doivent être reproduites par les équations constitutives utilisées pour analyser la réponse du sel gemme autour des ouvertures souterraines. Dans cet article, un modèle constitutif relativement simple est introduit dans le code numérique FLAC et appliqué pour analyser le comportement différé d'excavations dans des mines de sel. Le modèle unifié en fluage et plasticité comprend une variable d“état interne avec une loi d”évolution qui induit un écrouissage progressif jusqu'à ce qu“un état stationnaire soit atteint. Des analyses numériques sont effectuées avec le modèle ISV-SH pour évaluer les paramètres du matériau et simuler la réponse d”une ouverture circulaire et d'excavations minières rectangulaires créées séquentiellement. Les résultats sont présentés et comparés à ceux obtenus avec l“équation bien connue de la loi de puissance de Norton, couramment utilisée dans l”ingénierie des mines de sel. Les résultats des calculs, présentés en termes de l’évolution des contraintes, des déformations et de vitesses de déformation, illustrent certains des aspects clés du comportement du sel gemme et ils mettent en évidence l“influence majeure de la loi de comportement utilisée pour les analyses numériques. L”approche de simulation proposée ici constitue une alternative pratique et flexible aux outils de modélisation basés sur le fluage stationnaire, souvent utilisés pour l“analyse des ouvertures souterraines dans les opérations d”extraction de sel gemme. 1 Ceci est une traduction fournie par l'auteur du résumé en anglais.","PeriodicalId":9382,"journal":{"name":"Canadian Geotechnical Journal","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136235359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Investigation of Thermal and Strength Characteristics of a Natural Backfill Composite Inspired by Synergistic Biochar-Biopolymer Amendment of Clay Loam 粘土壤土生物炭-生物聚合物增效改性天然充填体热强度特性研究

3区工程技术

Canadian Geotechnical Journal Pub Date : 2023-09-21 DOI: 10.1139/cgj-2022-0528

Deepak Patwa, Anant Aishwarya Dubey, K Ravi, Sreedeep Sekharan

{"title":"Investigation of Thermal and Strength Characteristics of a Natural Backfill Composite Inspired by Synergistic Biochar-Biopolymer Amendment of Clay Loam","authors":"Deepak Patwa, Anant Aishwarya Dubey, K Ravi, Sreedeep Sekharan","doi":"10.1139/cgj-2022-0528","DOIUrl":"https://doi.org/10.1139/cgj-2022-0528","url":null,"abstract":"Thermally active structures (TAS) such as crude oil pipelines and high-power voltage cables are usually embedded within local soils for their sub-structural stability. Based on site requirements, soils are amended with synthetic cementitious materials to improve their strength. However, synthetic binders such as cementation, geo-polymerization, and bio-cementation undermine thermal insulation while improving strength. Moreover, commonly used synthetic binders such as cement and lime are extremely harmful to the geoenvironment due to their hyper-alkalinity and high carbon footprint. Therefore, this study proposes a novel backfill composite consisting of clay loam, biochar, and biopolymer for superior thermal insulation and strength characteristics. Local soil containing high clay content was chosen due to its low thermal conductivity and potential to form stable hydrogen bonding with the biopolymer. The clay loam is amended with 2.5% to 7.5% (w/w) biochar and 0.5% to 1.5% (w/w) of biopolymer and their various combinations. Out of nine soil-biochar-biopolymer composites devised in the current study, six composites exhibited superior strength and lowered thermal conductivity than the plain soil in both conditions, i.e., optimum moisture state and upon drying. The findings of this study establish the synergistic attributes of biopolymer and biochar amendment for developing a high-strength thermal-insulating soil composite.","PeriodicalId":9382,"journal":{"name":"Canadian Geotechnical Journal","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136102038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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: 2

Effects of Sodium Chloride Crystallization on Shear Characteristics of Road Base Aggregates under Unsaturated State 不饱和状态下氯化钠结晶对道路基层骨料剪切特性的影响

3区工程技术

Canadian Geotechnical Journal Pub Date : 2023-09-19 DOI: 10.1139/cgj-2023-0243

Xingchi Ye, Zhigang Cao, Chuan Gu, Yuanqiang Cai, Jun Wang

{"title":"Effects of Sodium Chloride Crystallization on Shear Characteristics of Road Base Aggregates under Unsaturated State","authors":"Xingchi Ye, Zhigang Cao, Chuan Gu, Yuanqiang Cai, Jun Wang","doi":"10.1139/cgj-2023-0243","DOIUrl":"https://doi.org/10.1139/cgj-2023-0243","url":null,"abstract":"The precipitation and intrusion of sodium chloride into pavement structures is inevitable in coastal regions, which can affect the mechanical properties of the road base courses. To investigate this problem, samples with sodium chloride solution were cured in a thermostatic chamber until they reached the specified states of sodium chloride precipitation within the pores. A critical crystallization degree (ωc) was discovered by computerized tomography (CT) scan, corresponding to the start of formation of porous salt crust cementing the soil particles. A series of unsaturated large-scale triaxial shear tests was then conducted under various states of salt crystallization. The results showed that in the early stages of crystallization (i.e., ω<ωc), the peak stress and internal friction angle decreased with ω because of the coating and lubricating effects of salt powders, while the apparent cohesion remained constant. When ω>ωc, owing to the increasing adsorption and cementation effects of the salt crust, rapid growth was observed for the peak stress, internal friction angle, and apparent cohesion of the road base aggregates. Considering the influence of salt precipitation, a modified shear strength criterion that can predict the shear strength of the salinized road base aggregates was formulated.","PeriodicalId":9382,"journal":{"name":"Canadian Geotechnical Journal","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135059616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Liquefaction Triggering and Post-triggering Behavior of Biocemented Loose Sand 生物胶结松散砂的液化触发及后触发行为

3区工程技术

Canadian Geotechnical Journal Pub Date : 2023-09-15 DOI: 10.1139/cgj-2023-0132

Minyong Lee, Michael Gregory Gomez

{"title":"Liquefaction Triggering and Post-triggering Behavior of Biocemented Loose Sand","authors":"Minyong Lee, Michael Gregory Gomez","doi":"10.1139/cgj-2023-0132","DOIUrl":"https://doi.org/10.1139/cgj-2023-0132","url":null,"abstract":"Biocementation is a biomediated ground improvement technique that can improve the engineering behavior of granular soils. The process has received significant attention as an earthquake-induced liquefaction mitigation technique; however, critical gaps have remained in our understanding of how liquefaction behaviors may shift with differences in loading magnitudes and cementation levels. In this study, direct simple shear tests were performed to examine the undrained shearing behaviors of biocemented loose Ottawa F-65 sand prepared to varying cementation levels corresponding to Vs increases up to 523 m/s. Significant increases in liquefaction triggering resistances were observed with added cementation across a broad range of loading magnitudes (CSR = 0.1 to 1.75) and exceeded improvements obtainable through densification alone. Following triggering, modest improvements in post-triggering strain accumulation and reconsolidation behaviors were observed that could be primarily attributed to the densification of specimens from added mineral solids at low cementation levels (ΔVs < 150 m/s). At higher cementation magnitudes, however, post-triggering behavioral enhancements exceeded those which would be expected from densification alone. Outcomes from this study improve our understanding of the liquefaction behaviors of biocemented soils, the metrics by which these behaviors can be effectively characterized, and the mechanisms responsible for behavioral enhancements, ultimately furthering our understanding of how the technology may be employed for liquefaction mitigation.","PeriodicalId":9382,"journal":{"name":"Canadian Geotechnical Journal","volume":"239 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135393573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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