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Discussion of “Measuring strength and consolidation properties in lacustrine clay using piezocone and self-boring pressuremeter tests” Can. Geotech. J. (IF 3.6) Pub Date : 2024-02-07 G. Mesri, L. Zhang
Canadian Geotechnical Journal, Ahead of Print.
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Iron ore tailings stabilization with alternative alkali-activated cement for dry stacking: mechanical and microstructural insights Can. Geotech. J. (IF 3.6) Pub Date : 2024-02-02 Helena Portela Farenzena, Giovani Jordi Bruschi, Guilherme Schmitt Medina, João Paulo de Sousa Silva, Andres Lotero, Nilo Cesar Consoli
Canadian Geotechnical Journal, Ahead of Print. Upstream tailings dams are high-risk structures that have experienced several failures worldwide, particularly with iron ore tailings (IOT). In this study, new disposal methods/techniques, such as cement-stabilized dry stacking, are discussed that provide enhanced mechanical behavior while reducing failure risks. Alkali-activated materials are used as
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Structural evolutions of MX80 bentonite pellet/powder mixtures under wetting and suction-controlled oedometer loading Can. Geotech. J. (IF 3.6) Pub Date : 2024-01-22 J.W. Yang, Y.J. Cui, N. Mokni
Canadian Geotechnical Journal, Ahead of Print. The compression behaviour of MX80 bentonite pellet/powder mixture was investigated by performing suction-controlled oedometer tests. The suction from 113 to 4.2 MPa was imposed by vapour equilibrium technique (VET), and zero suction by water circulation (WC). After instantaneously unloaded from various target vertical stresses, the structural observation
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Bidirectional static loading tests on barrette piles. A case history from Ho Chi Minh City, Vietnam Can. Geotech. J. (IF 3.6) Pub Date : 2024-01-10 Tan Nguyen, Bengt H. Fellenius
Canadian Geotechnical Journal, Ahead of Print. Bidirectional static loading tests were conducted on two strain-gage instrumented barrettes installed to 72 m depth in Ho Chi Minh City, Vietnam. The barrettes were to support a 16-storey building with 5 basements. The soil profile comprised layers of medium coarse to fine sand, medium clay, firm to stiff clayey soil, and dense sandy silt. The region is
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Note of appreciation Can. Geotech. J. (IF 3.6) Pub Date : 2024-01-01
Canadian Geotechnical Journal, Volume 61, Issue 1, Page i-i, January 2024.
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Effects of extreme drought–rainfall on slope failure mechanisms: centrifuge modelling Can. Geotech. J. (IF 3.6) Pub Date : 2023-11-14 Haiyi Zhong, Yikai Wang, Shuai Zhang, Qi Zhang, Charles Wang Wai Ng
Canadian Geotechnical Journal, Ahead of Print. The extreme drought–rainfall seesaw is projected to occur with an increasing frequency. However, there still lacks a thorough understanding of its impacts on slope behaviour, in which desiccation crack plays a key role. To address this issue, a centrifuge test was conducted to investigate the effects of drought-induced desiccation crack on slope instability
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Stability of sandy soils against internal erosion under cyclic loading and quantitatively examination of the composition and origin of eroded particles Can. Geotech. J. (IF 3.6) Pub Date : 2023-11-09 Shaoheng Dai, Xuzhen He, Chenxi Tong, Feng Gao, Sheng Zhang, Daichao Sheng
Canadian Geotechnical Journal, Ahead of Print. Internal erosion refers to the movement of fine particles within soil framework due to subsurface water seepage. Existing criteria for assessing internal erosion usually are based on static loading, and the effect of cyclic load is not considered. Additionally, there are limited studies to examine the particle-size distribution and origin of eroded fine
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MSD applied to the construction of the British Library basement: a multi-stage excavation in London Clay Can. Geotech. J. (IF 3.6) Pub Date : 2023-10-30 Jamie J. Crispin, Abigail H. Bateman, Elia Voyagaki, Alexandra Campbell, George Mylonakis, Malcolm D. Bolton, Paul J. Vardanega
Canadian Geotechnical Journal, Ahead of Print. This note presents the application of the mobilisable strength design (MSD) method to the monitoring results of the multi-propped excavation in the south area of the British Library Euston, constructed in a highly overconsolidated stiff clay deposit. The MSD method is an energy-based approach (a nonlinear finite-element method for a single-degree-of-freedom
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A hypoplastic model for cemented sand under monotonic and cyclic loading Can. Geotech. J. (IF 3.6) Pub Date : 2023-10-24 D. Liao, Z.X. Yang, S. Wang, W. Wu
Canadian Geotechnical Journal, Ahead of Print. In this study, a hypoplastic model is developed to describe the mechanical behaviors of cemented sand under both monotonic and cyclic loading conditions. A state variable is proposed to qualify the bonding strength, and it is incorporated into the model to reflect the influence of cementation on the strength, stiffness, and dilatancy of sand. To reflect
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Seasonal hydrology and gas transport in a composite cover on sulfide tailings Can. Geotech. J. (IF 3.6) Pub Date : 2023-10-24 Aria Zhang, Jeff Bain, Adrienne Schmall, Carol J. Ptacek, David W. Blowes
Canadian Geotechnical Journal, Ahead of Print. This study presents the field performance of a five-layer composite cover to mitigate acid mine drainage in legacy sulfide tailings in northern Ontario, Canada. Installed in 2008, this cover comprised sand, clay, geosynthetic clay liner, sand, and waste rock layers. To evaluate the effectiveness of the cover in reducing water and oxygen ingress, groundwater
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The July 1996 Saguenay Flood: geotechnical aspects Can. Geotech. J. (IF 3.6) Pub Date : 2023-10-18 Serge Leroueil, Régis Bouchard, Denis Demers, Didier Perret
Canadian Geotechnical Journal, Ahead of Print. Extreme rainfall occurred in July 1996 over the Saguenay Region, some 200 km north of Quebec City. With about 1000 landslides, seven damaged dams, one dike failure, washed out road sections, tens of bridges damaged or destroyed, 1700 properties destroyed or damaged and several casualties, this event was one of the most important natural disasters in Canada
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Correction: calibration of the PM4Sand model for hard-rock mine tailings based on laboratory and field testing results Can. Geotech. J. (IF 3.6) Pub Date : 2023-10-12 Carlos Andrés Contreras, Samuel Yniesta, Abtin Jahanbakhshzadeh, Michel Aubertin
Canadian Geotechnical Journal, Ahead of Print. Résumé Une campagne d“essais en laboratoire et sur le terrain a été réalisée pour caractériser le comportement des résidus miniers de roche dure. Des essais cycliques triaxiaux, de cisaillement direct simple et de cisaillement simple triaxial ont montré que les résidus contractants sont susceptibles de se liquéfier et que leur comportement est similaire
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Enhancing hydraulic fracturing for in-situ remediation in low-permeability soils: A comprehensive investigation of fracture propagation Can. Geotech. J. (IF 3.6) Pub Date : 2023-10-13 Zhuang Cui, Bing Hou
Canadian Geotechnical Journal, Ahead of Print. Enhancing the complexity of the hydraulic fractures to provide a wide channel for the injection of the agent is crucial for remediating low-permeability contaminated sites. This study involved a physical simulation experiment of large-scale true triaxial hydraulic fracturing in undisturbed soil, as well as field fracturing tests, to investigate fracture
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Rapid 3D lidar change detection for geohazard identification using GPU-based alignment and M3C2 algorithms Can. Geotech. J. (IF 3.6) Pub Date : 2023-10-04 Luke Weidner, Alex Ferrier, Megan van Veen, Matthew J. Lato
Canadian Geotechnical Journal, Ahead of Print. 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
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Joint analysis of macroscopic response and microfabric evolution of coral sand during earthquake-induced liquefaction Can. Geotech. J. (IF 3.6) Pub Date : 2023-10-04 Qi Wu, Xuanming Ding, Yanling Zhang
Canadian Geotechnical Journal, Ahead of Print. 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. Based on the non-destructive scanning and image reconstruction in three-dimensional, the change in the grain–pore structure of sands under earthquakes is discussed
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Correction: numerical implementation and application of an internal state variable model to analyze the time-dependent behavior of mining excavations in rock salt Can. Geotech. J. (IF 3.6) Pub Date : 2023-09-21 Jonathan D. Aubertin, Michel Aubertin, Abtin Jahanbakhshzadeh
Canadian Geotechnical Journal, Ahead of Print. 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
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Discrete element analysis of geogrid–aggregate interface shear behavior under cyclic normal loading Can. Geotech. J. (IF 3.6) Pub Date : 2023-09-07 Ya-Qiong Wang, Shi-Jin Feng
Canadian Geotechnical Journal, Ahead of Print. The stability of a geogrid-stabilized structure affected by cyclic normal loading (CNL) is significant but has not been fully revealed. Using the discrete element method (DEM), the effect of CNL on the microscale mechanical responses (i.e., stress states, contact evolution, fabric deformation) of the geogrid–aggregate interface direct shear test is first
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Analytical and numerical models for strain and load calculations for geosynthetic liner systems on steep slopes Can. Geotech. J. (IF 3.6) Pub Date : 2023-09-01 Yan Yu, R. Kerry Rowe
Canadian Geotechnical Journal, Ahead of Print. The paper develops an analytical model based on the force equilibrium for the design of steep slope geosynthetic liner systems to overcome downdrag loads from waste settlement. This analytical model calculates the required tensile stiffness for a high strength/stiffness geotextile (HS-GTX) reinforcement over the GMB to limit the maximum HS-GTX tensile
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Correction: Thermal control mechanism of ventilated–closed block layer composite embankment of expressway in warm permafrost regions Can. Geotech. J. (IF 3.6) Pub Date : 2023-08-28 Chang Yuan, Qi-hao Yu, Dong-wei Li, Xin Chen, Jin Qian, Zhenhua Wang, Yuan-ming Lai
Canadian Geotechnical Journal, Ahead of Print.
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Rockfall motion using a Smart Rock sensor Can. Geotech. J. (IF 3.6) Pub Date : 2023-08-25 Bruma Souza, Jean Benoît
Canadian Geotechnical Journal, Ahead of Print. Rockfalls can often pose a significant risk to the public if protective designs do not properly account for block movement downslope and onto infrastructure facilities. Assessing these hazards is challenging, especially as current empirical and computational methods for predicting trajectories of falling blocks generally do not include the contribution
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Pressure infiltration behavior and fluid loss of bentonite slurry: a comparative study of two bentonite slurries Can. Geotech. J. (IF 3.6) Pub Date : 2023-08-23 Su Qin, Yang Cheng, He Huang, Wan-Huan Zhou
Canadian Geotechnical Journal, Ahead of Print. Bentonite slurry is frequently used to temporarily stabilize the excavation for slurry tunnel boring machines (TBMs) driving in permeable soils, such as sand and gravel. In this study, two types of bentonite slurries (BS1 and BS2) were subjected to a series of infiltration column tests and modified fluid-loss tests under various pressure levels. Monitoring
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Framework for thaw consolidation of fine-grained soils Can. Geotech. J. (IF 3.6) Pub Date : 2023-08-23 Simon Dumais, Jean-Marie Konrad
Canadian Geotechnical Journal, Ahead of Print. A framework for thaw consolidation of fine-grained soils is proposed. The development of the framework is based on the general definition of large-strain consolidation and on the general behaviour of soils upon thawing. The residual stress and the residual stress curve are used in the framework to define the initial thawed state. The concept of the residual
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Development of a reactive transport model for microbial induced calcium carbonate precipitation in unsaturated conditions Can. Geotech. J. (IF 3.6) Pub Date : 2023-08-22 Zahra Faeli, Brina M. Montoya, Mohammed A. Gabr
Canadian Geotechnical Journal, Ahead of Print. Microbial induced calcium carbonate precipitation (MICP) offers a sustainable technique to improve geologic properties of soils in engineering structures. The applications encompass improved soil strength, scour mitigation, fracture sealing, and in situ contaminant immobilization. Previous studies have presented fundamental processes and implementation
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A semi-analytical solution for laterally loaded non-circular piles in elastic soil Can. Geotech. J. (IF 3.6) Pub Date : 2023-08-22 Hang Zhou, Zengliang Wang, Dipanjan Basu, Hanlong Liu
Canadian Geotechnical Journal, Ahead of Print. The traditional method for analysis and design of laterally loaded piles with non-circular cross-sections such as rectangular, H-shaped, and X-shaped piles involves the simplification of converting the non-circular pile to a circular pile with equivalent second moment of inertia. A rigorous semi-analytical method is developed for calculating the response
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Material-specific interpretation of the state parameter from drained cone penetration test Can. Geotech. J. (IF 3.6) Pub Date : 2023-08-16 Mohammad Mozaffari, Mason Ghafghazi
Canadian Geotechnical Journal, Ahead of Print. The Cone Penetration Test (CPT) is a widely used site investigation tool due to its accuracy and wealth of data at a relatively low cost. Virtually all CPT interpretations explicitly or implicitly depend on how the in-situ state parameter is correlated to the tip resistance. Accurate interpretation of the state parameter from CPT is the basis for evaluating
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From data to decision: combining Bayesian updating with a data-driven prior to forecast the settlement of embankments on soft soils Can. Geotech. J. (IF 3.6) Pub Date : 2023-08-16 Xiao Wan, James Doherty
Canadian Geotechnical Journal, Ahead of Print. Applications of Bayesian updating commonly treat soil parameters as random variables. A significant issue with this is that soil parameters are highly subjective. Therefore, using traditional parameter-based models, Bayesian analysis starts from a subjective prior and it is unclear how this may influence the overall results of a study. In this paper, Bayesian
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Field study on installation effects of pre-bored grouted planted pile in deep clayey soil Can. Geotech. J. (IF 3.6) Pub Date : 2023-08-11 Jia-jin Zhou, Jian-lin Yu, Xiao-nan Gong, Ri-hong Zhang
Canadian Geotechnical Journal, Ahead of Print. This paper presents the results of field tests performed to investigate the installation effects of pre-bored grouted planted (PGP) pile in deep clayey soil. The variation of horizontal soil displacements, excess pore water pressures and lateral soil pressures was measured in the PGP pile installation process. The test results show that the drilling and
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Soil–water retention behavior of a loess–paleosol sequence and its significance for hydrology and paleoclimate: a case study from the Luochuan profile of the Loess Plateau, China Can. Geotech. J. (IF 3.6) Pub Date : 2023-08-11 Haiman Wang, Wankui Ni
Canadian Geotechnical Journal, Ahead of Print. The soil water retention behavior of the loess–paleosol sequence has important significance for hydrology and paleoclimate. This report examines the soil–water retention curves and microstructures of the Luochuan loess–paleosol sequence, which has a thickness of around 43.7 m and includes the S0–L6 layers. The experimental results demonstrated that as
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Analysis of the geotechnical behavior of a piled raft in tropical lateritic soil based on long-term monitoring of columns, piles, and raft–soil interface Can. Geotech. J. (IF 3.6) Pub Date : 2023-08-03 Heitor Cardoso Bernardes, Renato Pinto da Cunha, Aleones José da Cruz Junior, Maurício Martines Sales, Juan Félix Rodríguez Rebolledo
Canadian Geotechnical Journal, Ahead of Print. This paper aims to analyze and describe the geotechnical behavior of a piled raft foundation of a tall building (53 floors, 172.4 m high) through the monitoring of strains in the building’s columns and piles, the stresses at the raft–soil interface, and the foundation settlements. Field and laboratory tests were performed, and associated with axisymmetric
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Limitations of Gold’s formula for predicting ice thickness requirements for heavy equipment Can. Geotech. J. (IF 3.6) Pub Date : 2023-08-02 Alan Fitzgerald, Willem Janse van Rensburg
Canadian Geotechnical Journal, Ahead of Print. Common practice for determining the required ice thickness for vehicles and equipment relies on Gold’s formula as outlined in provincial and territorial publications relating to ice safety. This practice persists despite recent advances in ice engineering knowledge that provide more comprehensive design methods utilizing allowable stress design approaches
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Quality control of fine-grained embankments using penetration tests Can. Geotech. J. (IF 3.6) Pub Date : 2023-07-31 Simon Oberhollenzer, Laurin Hauser, Martin Ehall, Roman Marte, Franz Tschuchnigg, Helmut F. Schweiger
Canadian Geotechnical Journal, Ahead of Print. The compaction control of earth works is an essential task in geotechnical engineering. In order to build more sustainably and to reduce project costs, fine-grained materials are more often used for embankment construction nowadays. The quality control of compacted soil layers is usually defined in terms of deformation moduli obtained from static and dynamic
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Elasto-plastic and post-yield weakening jointed rockmass response in a comparison of equivalent-continuum and explicit structural models Can. Geotech. J. (IF 3.6) Pub Date : 2023-07-27 Caitlin P. Fischer, Mark S. Diederichs
Canadian Geotechnical Journal, Ahead of Print. The strength and stiffness of a composite rockmass (intact material, defects, joints, bedding, etc.) are primary inputs for the engineering analysis of rock slopes and underground excavations. The Geological Strength Index (GSI) has served rock engineering for three decades as a rockmass assessment system based on the blockiness of the rockmass and discontinuity
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Effects of fine aggregate content on the unsaturated hydraulic characteristics of recycled concrete aggregate Can. Geotech. J. (IF 3.6) Pub Date : 2023-07-26 Rui Chen, Fan Wu, Charles W.W. Ng, Pei Tai, Dong-jie Mei
Canadian Geotechnical Journal, Ahead of Print. Recycled concrete aggregate (RCA) can be used in landfill and slope cover systems, where its unsaturated hydraulic properties play an important role. The hydraulic behavior of RCAs can be potentially controlled through mixing coarse and fine aggregates by a pre-determined proportion, which lacks experimental validation. In this study, water retention curve
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Longevity of multilayered textured HDPE geomembranes in low-level waste applications Can. Geotech. J. (IF 3.6) Pub Date : 2023-07-25 M. Zafari, R.K. Rowe, F.B. Abdelaal
Canadian Geotechnical Journal, Ahead of Print. The degradation behaviour of five multilayered textured white geomembranes (GMBs) is investigated when immersed in two synthetic low-level waste (LLW) leachates with pH 7 and 9 at a range of temperatures (40–85 °C) for 48–55 months. Results are compared to the performance of the GMBs in synthetic municipal solid waste (MSW) leachate. Increasing pH from
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Estimating plasticity index directly from piezocone penetration tests in saturated natural soils Can. Geotech. J. (IF 3.6) Pub Date : 2023-07-25 N. Ramsey, K.K. Tho
Canadian Geotechnical Journal, Ahead of Print. Plasticity index, Ip, is a relatable parameter for most geotechnical engineers, because Ip can be used to estimate other soil properties, such as internal friction angle, compression index, and low-strain shear modulus. Consequently, a method for estimating Ip directly from a piezocone penetration test (CPTU), which measures cone resistance, sleeve friction
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Displacement-based finite element approach on analysing flexible combined pile–raft foundation in layered soil Can. Geotech. J. (IF 3.6) Pub Date : 2023-07-21 Aniruddha Bhaduri, Deepankar Choudhury
Canadian Geotechnical Journal, Ahead of Print. The present study proposes a new finite element methodology to analyse the behaviour of flexible combined pile–raft foundation (CPRF) situated in layered soil, in a displacement-based framework. The soil medium is idealised as an advanced elastic Pasternak medium and the piles and raft are modelled as bar and plate element, respectively. The two components
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Partially drained uplift behaviour of plant roots in dilative soils Can. Geotech. J. (IF 3.6) Pub Date : 2023-07-18 Jun Zhu, Anthony Kwan Leung, Yu Wang
Canadian Geotechnical Journal, Ahead of Print. A large volume of research reporting the pull-out behaviour of root systems is available, but no study has considered the effects of soil drainage. This work implemented a modified three-dimensional embedded beam element model in a finite element platform that solved model equations by using a fully hydromechanically coupled algorithm. The model was validated
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Creep failure characteristics and characterization of constitutive behaviors of jointed sandstone under multi-level loading of seepage pressure Can. Geotech. J. (IF 3.6) Pub Date : 2023-07-17 Deng Zhang, Liming Zhang, Yan Liu, Zaiquan Wang, Faxing Zhang
Canadian Geotechnical Journal, Ahead of Print. To study creep failure behaviors of jointed rock mass with seepage pressure as the main damage driving force, creep tests under multi-level loading of seepage pressure were conducted on sandstone with different joint dip angles. In addition, a memory-dependent nonlinear seepage–creep model was established for jointed sandstone. The results show that jointed
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Spatiotemporal evolution of biomineralization in heterogeneous pore structure Can. Geotech. J. (IF 3.6) Pub Date : 2023-07-14 Guoliang Ma, Xiang He, Yang Xiao, Jian Chu, Hanlong Liu, Armin W. Stuedlein, T. Matthew Evans
Canadian Geotechnical Journal, Ahead of Print. A fundamental understanding of the CaCO3 precipitation process in the pore network of geomaterials is important to uncover the mechanism behind the evolution of the engineering properties of geomaterials during the microbially induced carbonate precipitation (MICP) treatment. However, the details about the CaCO3 precipitation process and its interaction
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Hierarchical Bayesian model for predicting small-strain stiffness of sand Can. Geotech. J. (IF 3.6) Pub Date : 2023-07-04 Yuanqin Tao, Kok-Kwang Phoon, Honglei Sun, Yuanqiang Cai
Canadian Geotechnical Journal, Ahead of Print. This paper develops a hierarchical Bayesian model (HBM) that integrates the physical knowledge and the test data to predict the small-strain shear modulus Gmax for a target sand type. The limited target-specific data are combined with the abundant generic data through a hierarchical structure so that the variability of Gmax within one sand type and across
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Stability of slope corners: a displacement-based FEM study Can. Geotech. J. (IF 3.6) Pub Date : 2023-07-04 Anna Timchenko, Jean-Louis Briaud
Canadian Geotechnical Journal, Ahead of Print. The stability of slopes is typically evaluated by two-dimensional plane strain analysis. However, many slopes exhibit three-dimensional (3D) geometries, including slope corners. Several researchers have studied the stability of slope corners but found that the factor of safety (FS) was close to the FS for the plane strain case. The results of a new series
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Probabilistic generic transformation model between two rock mass properties: specific fracture energy and P-wave velocity Can. Geotech. J. (IF 3.6) Pub Date : 2023-07-03 Takayuki Shuku, Kok-Kwang Phoon, Masako Ishii, Takeru Kumagai, Yasuhiro Yokota, Kensuke Date
Canadian Geotechnical Journal, Ahead of Print. This study proposed a probabilistic generic transformation model between two rock mass properties, specific fracture energy, Ev, and P-wave velocity, VP. To build the transformation model, 12 pairwise data sets of Ev and VP were collected from six different construction sites involving construction of mountain tunnels in Japan. This database is labeled
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On the mechanics of filtered compacted consolidated and overconsolidated iron ore tailings at high pressures Can. Geotech. J. (IF 3.6) Pub Date : 2023-06-30 João Paulo de Sousa Silva, João Vítor de Azambuja Carvalho, Alexia Cindy Wagner, Pedro Pazzoto Cacciari, Nilo Cesar Consoli
Canadian Geotechnical Journal, Ahead of Print. The mechanics of filtered compacted normally consolidated (NC) and overconsolidated (OC) iron ore tailings (IOTs) was studied by performing triaxial testing at high pressures of up to 120 MPa. The OC specimens were obtained by isotropically compressing compacted IOT to 120 MPa, unloading it to distinct confining pressures, and shearing at constant radial
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DEM study of the stress fields around the closed-ended displacement pile driven in sand Can. Geotech. J. (IF 3.6) Pub Date : 2023-06-28 N. Guo, H.F. Liu, B.J. Li, Z.X. Yang
Canadian Geotechnical Journal, Ahead of Print. Three-dimensional discrete element method (DEM) is employed to model the published calibration chamber test of a closed-ended displacement pile driven in sand. To achieve large chamber-to-pile and pile-to-particle size ratios for unbiased predictions, a high-performance graphics processing unit-powered DEM code is utilised in conjunction with the axisymmetric
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A coarse graining CFD–DEM simulation on contact erosion of layered cohesionless soils Can. Geotech. J. (IF 3.6) Pub Date : 2023-06-28 Yuan Guo, Jinqin Xiao, Chen Wang
Canadian Geotechnical Journal, Ahead of Print. A coarse graining computational fluid dynamics–discrete element method (DEM) model is developed to analyze the contact erosion of cohesionless soils at the coarse/fine soil interface. Two benchmark cases are provided to verify the model implementation, including the collision of two groups of particles and collapse of a soil column in water. It is demonstrated
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Undrained cyclic loading behavior of stiff Eocene-to-Jurassic plastic, high-OCR clays Can. Geotech. J. (IF 3.6) Pub Date : 2023-06-15 K. Pan, G.Y. Zhou, Z.X. Yang, R.J. Jardine
Canadian Geotechnical Journal, Ahead of Print. Assessing foundation response to cyclic loading is vital when designing transport infrastructure, such as road pavements and rail tracks, as well as offshore, port, and tall tower structures. While detailed guidance is available on characterizing many soil types’ cyclic behavior, relatively few studies have been reported on stiff, geologically aged, plastic
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Reliability assessment of rainfall-induced slope stability using Chebyshev–Galerkin–KL expansion and Bayesian approach Can. Geotech. J. (IF 3.6) Pub Date : 2023-06-15 Xin Gu, Lin Wang, Qiang Ou, Wengang Zhang, Guanhua Sun
Canadian Geotechnical Journal, Ahead of Print. Soil spatial variability has essential influence on the reliability of geotechnical structures. Karhunen–Loève (KL) series expansion is an effective approach to characterize such features of soil properties. Acquiring solution for Fredholm integral equation of the second type is a necessary prerequisite; however, the corresponding analytical expressions
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Insights into the thermo-hydraulic properties of compacted MX80 bentonite during hydration under elevated temperature Can. Geotech. J. (IF 3.6) Pub Date : 2023-06-14 Yu Lu, John S. McCartney
Canadian Geotechnical Journal, Ahead of Print. In high-level radioactive waste geological repositories, compacted bentonite undergoes coupled thermo-hydraulic processes due to heat released from a central waste canister and groundwater imbibition from the surrounding host rock. An understanding of these processes is essential for long-term simulations of radionuclide migration and canister corrosion
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Stability of layered soil slope with tension crack: a closed-form solution Can. Geotech. J. (IF 3.6) Pub Date : 2023-06-13 Guangyu Dai, Yufeng Gao, Fei Zhang, Shuang Shu
Canadian Geotechnical Journal, Ahead of Print. Evaluating the stability of layered slopes, a common type of terrain in nature and engineering practice, poses a fundamental challenge in the field of geotechnique. The emergence and extension of tension cracks play a crucial role in the failure process of layered slopes, but accurately predicting the location of layered slope cracking and assessing its
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Effect of variable confining pressure on the long-term cyclic behaviour of calcareous sand: experimental observation and microstructural interpretation Can. Geotech. J. (IF 3.6) Pub Date : 2023-06-13 Shao-Heng He, Zhi Ding, Meisam Goudarzy, Yifei Sun, Zhen-Yu Yin
Canadian Geotechnical Journal, Ahead of Print. Subgrade soils are exposed to simultaneous cyclic deviatoric stress and variable confining pressure (VCP) caused by traffic loading. However, the effect of VCP on cyclic behaviour is still debated and no attempt was made to investigate its effect on calcareous sand. In this study, high-cyclic triaxial tests with a wide range of mean effective stress, cyclic
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Characteristics and mechanism of large deformation of squeezing tunnel in phyllite stratum Can. Geotech. J. (IF 3.6) Pub Date : 2023-06-13 Jinpeng Zhao, Zhongsheng Tan, Qinglou Li, Lei Li
Canadian Geotechnical Journal, Ahead of Print. The Maoxian Tunnel in Sichuan, China has experienced significant deformation and supporting failure in the surrounding phyllite rock. To address this problem, on-site engineering geological investigation and testing methods were deployed in the present study to examine the characteristics and mechanism of deformation in the tunnel. Scanning electron microscopy
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Response of cohesive–frictional soils at small to medium shear strain levels from thermo-controlled resonant column testing Can. Geotech. J. (IF 3.6) Pub Date : 2023-06-10 Roya Davoodi-Bilesavar, Laureano R. Hoyos
Canadian Geotechnical Journal, Ahead of Print. The shear modulus and damping ratio are arguably the two most crucial soil parameters to be used in seismic site-response analyses and a wide variety of other geotechnical engineering applications involving soil materials subjected to dynamic loading. The dependency of these parameters on the level of load-induced shear strains in the field has been investigated
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Centrifuge modeling of the run-out behavior of fly ash deposits subjected to a loss of confinement Can. Geotech. J. (IF 3.6) Pub Date : 2023-06-08 S.S.C. Madabhushi, S.B. Follett, K.B. O’Hara, D.W. Wilson, B.L. Kutter, A. Martinez
Canadian Geotechnical Journal, Ahead of Print. Numerous industries are concerned by the humanitarian, environmental, and economic consequences of debris flows, landslides, and material run-outs. However, the run-out behavior following a loss of confinement, e.g., dam failure, is not well understood. The material’s complex constitutive behavior means multiple mechanisms contribute to the deformation
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Accounting for the microstructure for the prediction of unsaturated shear strength of remolded fine-grained soils Can. Geotech. J. (IF 3.6) Pub Date : 2023-06-07 Régis Mpawenayo, Pierre Gerard
Canadian Geotechnical Journal, Ahead of Print. Predictions of the unsaturated shear strength with generalized effective stress-based approaches disregard the non-uniform microstructure of remolded fine-grained soils. The study aims at investigating the adequacy of microstructurally-based effective stress to predict the unsaturated shear strength of remolded fine-grained soils over a wide range of suctions
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Centrifuge modelling of piled foundations in swelling clays Can. Geotech. J. (IF 3.6) Pub Date : 2023-06-07 T.A.V. Gaspar, S.W. Jacobsz, G. Smit, A.S. Osman
Canadian Geotechnical Journal, Ahead of Print. A study aimed towards assessing the variation in shaft capacity of piled foundations in swelling clays is presented. At the clay's in-situ water content, the results of pull-out tests on short-length piles revealed no dependency of shaft capacity on overburden stress. Conversely, after achieving a targeted value of swell, a strong dependency on overburden
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A hybrid SVR-BO model for predicting the soil thermal conductivity with uncertainty Can. Geotech. J. (IF 3.6) Pub Date : 2023-06-06 Kai-Qi Li, Zhen-Yu Yin, Yong Liu
Canadian Geotechnical Journal, Ahead of Print. This study proposes a generalised framework for developing a hybrid machine learning (ML) model that combines support vector regression (SVR) with hyperparameter optimisation to predict thermal conductivity (k) with uncertainty. The framework contains four phases: data pre-processing, determining the best-performing hybrid model, selecting the optimal
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Axial pullout behaviour of fusible PVC pipes and fusion weld joints assessed using distributed fibre optic sensors Can. Geotech. J. (IF 3.6) Pub Date : 2023-05-27 J. Matymish, I.D. Moore, J.E. Woods, N.A. Hoult
Canadian Geotechnical Journal, Ahead of Print. Pipes are subjected to axial pulling forces that lead to shear stresses at the soil–pipe interface and axial strain distributions from various circumstances, including pulled-in-place pipe installation and permanent ground deformations. This study investigates the axial pullout response of fusible polyvinyl chloride pipes in dense sand. Three tests were
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Reply to the discussion by Dallo on “Updated skeleton void ratio for gravelly sand mixtures considering effect of grain-size distribution” Can. Geotech. J. (IF 3.6) Pub Date : 2023-05-25 Tao Wang, Sihong Liu, Antoine Wautier, François Nicot
Canadian Geotechnical Journal, Ahead of Print.
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Anchor conditions for estimated unsaturated shear strength functions Can. Geotech. J. (IF 3.6) Pub Date : 2023-05-26 Thi Phuong An Tran, D.G. Fredlund, S.K. Vanapalli
Canadian Geotechnical Journal, Ahead of Print. Since the mid-1990s, several empirical unsaturated shear strength equations have been proposed for use in geotechnical engineering practice. Most of the equations have been based on information associated with the measured drying soil-water characteristic curve (SWCC) in combination with the effective shear strength parameters of the saturated soil. There
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Reply to the discussion by Shuttle and Jefferies on “Improved cone penetration test predictions of the state parameter of loose mine tailings” Can. Geotech. J. (IF 3.6) Pub Date : 2023-05-24 Juan Ayala, Andy Fourie, David Reid
Canadian Geotechnical Journal, Ahead of Print.