Showing papers in "Canadian Geotechnical Journal in 2021"
TL;DR: In this paper, bentonite was introduced in microbially induced carbonate precipitation (MICP) grouting to stabilize coarse sand, and varying concentrations (0, 20, 40, and 80 g/L) of bentonite were added.
Abstract: To effectively stabilize coarse sand, bentonite was introduced in microbially induced carbonate precipitation (MICP) grouting. Varying concentrations (0, 20, 40, and 80 g/L) of bentonite were added...
69 citations
TL;DR: The potential instability of fine-grained sediments induced by hydrate dissociation has been investigated in this article, where the authors show that approximately 90% of gas hydrates are buried in fine grained sediment, especially in the South China Sea.
Abstract: Approximately 90% of gas hydrates are buried in fine-grained sediments, especially in the South China Sea. The potential instability of fine-grained sediments induced by hydrate dissociation requir...
63 citations
TL;DR: In this paper, the cyclic stress or liquefaction behavior of granular materials is strongly affected by the relative density and confining pressure of the soil, and the state parameter accounting for b...
Abstract: The cyclic stress or liquefaction behavior of granular materials is strongly affected by the relative density and confining pressure of the soil. In this study, the state parameter accounting for b...
39 citations
TL;DR: An essential task in many geotechnical projects is delineation of subsurface soil stratigraphy from scatter measurements as discussed by the authors, which is a difficult and time-consuming task.
Abstract: An essential task in many geotechnical projects is delineation of subsurface soil stratigraphy from scatter measurements. Geotechnical engineers often use their knowledge on local geology and inter...
36 citations
TL;DR: In this paper, the impact of electrokinetic (EK) on the bearing capacity of reinforced cement concretized concrete concretes has been analyzed, and the EK method has only been used to increase the capacity of steel piles.
Abstract: To date, the electrokinetic (EK) method has only been used to increase the bearing capacity of steel piles. This study analysed the impact of EK on the bearing capacity of reinforced cement concret...
32 citations
TL;DR: The devastating effects of natural hazards due to the propagation of mass flows, such as landslides, debris flows, and avalanches, can be avoided, or at least reduced, by placing protective barrier as discussed by the authors.
Abstract: The devastating effects of natural hazards due to the propagation of mass flows, such as landslides, debris flows, and avalanches, can be avoided, or at least reduced, by placing protective barrier...
31 citations
TL;DR: In geotechnical engineering, evaluation of the seismic stability of seismic stability has been studied in this paper, where earthquakes frequently induce landslides and other natural disasters that would have a huge impact on human life and properties.
Abstract: Earthquakes frequently induce landslides and other natural disasters that would have a huge impact on human life and properties. In geotechnical engineering, evaluation of the seismic stability of ...
28 citations
TL;DR: A generic rock mass database consisting of nine parameters was compiled from 225 studies as discussed by the authors, and the nine parameters are the deformation modulus, elastic modulus and dynamic modulus.
Abstract: A generic rock mass database consisting of nine parameters is compiled from 225 studies. The nine parameters are the deformation modulus, elastic modulus, dynamic modulus, rock quality designation,...
27 citations
TL;DR: Screw anchors have been recognized as an innovative solution to support offshore jacket structures and floating systems, due to their low-noise installation and potential enhanced uplift capacity as discussed by the authors.
Abstract: Screw anchors have been recognised as an innovative solution to support offshore jacket structures and floating systems, due to their low-noise installation and potential enhanced uplift capacity. ...
25 citations
TL;DR: In this paper, it is usual practice for engineers to interpret stratigraphic boundaries separating different layers of a multi-layered slope, which is essential and crucial for slope stability analysis.
Abstract: Subsurface stratigraphy of multi-layered slopes is essential and crucial for slope stability analysis. It is usual practice for engineers to interpret stratigraphic boundaries separating different ...
24 citations
TL;DR: In this article, the influence of two-phase flows containing suspension particles, which are common in nature, on internal erosion with coupling effect of clogging remains unclear, and a three-dimensional model is presented.
Abstract: The influence of two-phase flows containing suspension particles, which are common in nature, on internal erosion with coupling effect of clogging remains unclear. This paper presents a three-dimen...
TL;DR: In this article, the effects of different stress paths on root reinforcement remain unclear, however, the root root is known to provide mechanical reinforcement to soils upon shearing and seismic loading.
Abstract: Plant roots are known to provide mechanical reinforcement to soils upon shearing and seismic loading. However, the effects of different stress paths on root reinforcement remain unclear. Moreover, ...
TL;DR: In this paper, the thermal response of an energy field scale pile that is part of a pair of energy piles spaced at a center-to-centre distance of 3.5m (i.e., where D is the pile diameter), was examined exper...
Abstract: The thermal response of an energy field scale pile that is part of a pair of energy piles spaced at a centre-to-centre distance of 3.5 m (i.e., 6D, where D is the pile diameter), was examined exper...
TL;DR: In this article, the authors investigated the thermo-mechanical behavior of energy piles equipped with a spiral pipe configuration, based on the results of a full-scale energy pile as well as 3-D the...
Abstract: This study investigates the thermo-mechanical behavior of energy piles equipped with a spiral pipe configuration. The analysis is based on the results of a full-scale energy pile as well as 3-D the...
TL;DR: In this paper, the authors investigated the effect of the advancement ratio on the installation resistance and in-service capacity of a screw pile and found that it is possible to reduce the required vertical compressive installation force by 96% by reducing the advance ratio and increase the tensile capacity significantly.
Abstract: Existing guidance on the installation of screw piles suggest that they should be installed in a pitch-matched manner to avoid disturbance to the soil which may have a detrimental effect on the in-service performance of the pile. Recent insights from centrifuge modelling have shown that installing screw piles in this way requires large vertical compressive (or crowd) forces, which is inconsistent with the common assumption that screw piles pull themselves into the ground requiring minimal vertical compressive force. In this paper, through the use of the Discrete Element Method (DEM), the effects of advancement ratio, i.e. the ratio between the vertical displacement per rotation to the geometric pitch of the helix of the screw pile helix, on the installation resistance and in-service capacity of a screw pile is investigated. The findings are further used to assess the applicability of empirical torque capacity correlation factors for large diameter screw piles. The results of the investigation show that it is possible to reduce the required vertical compressive installation force by 96% by reducing the advancement ratio and that although over-flighting a screw pile can decrease the subsequent compressive capacity, it appears to increase the tensile capacity significantly.
TL;DR: The impact mechanisms of flow-like landslides against structures is still an open issue in the scientific literature as mentioned in this paper, and many researchers have employed so far either experiments or numerical simulations.
Abstract: The study on impact mechanisms of flow-like landslides against structures is still an open issue in the scientific literature. Many researchers have employed so far either experiments or numerical ...
TL;DR: In this paper, the innovative carbonation technique based on reactive MgO and CO2 has been identified as an environmentally friendly and efficient method in the improvement of weak soils, which has been shown to improve soil quality.
Abstract: The innovative carbonation technique based on reactive MgO and CO2 has been identified as an environmentally friendly and efficient method in the improvement of weak soils. Previous laboratory stud...
TL;DR: In this paper, the horizontal bearing characteristics of piles in coral sand and silica sand from comparative experimental studies are presented, and a total of 6 model piles with different diameters are tested.
Abstract: This paper presents the horizontal bearing characteristics of piles in coral sand and silica sand from comparative experimental studies. A total of 6 model piles with different diameters are tested...
TL;DR: Baffle arrays are used to filter boulders from granular flows, such that the impact load exerted on barriers is reduced as discussed by the authors, however, current guidelines provide limited recommendations on baffle design.
Abstract: Baffle arrays are used to filter boulders from granular flows, such that the impact load exerted on barriers is reduced. However, current guidelines provide limited recommendations on baffle design...
TL;DR: The coefficient of restitution (COR) is an important input parameter in numerical simulation of granular flows, as it governs the travel distance, the lateral spreading, and the design of barri...
Abstract: The coefficient of restitution (COR) is an important input parameter in the numerical simulation of granular flows, as it governs the travel distance, the lateral spreading, and the design of barri...
TL;DR: This paper presents a novel framework of modeling crushable granular materials under mechanical loadings based on the discrete element method (DEM) and is featured with the construction of high-performance liquid chromatography systems.
Abstract: This paper presents a novel framework of modeling crushable granular materials under mechanical loadings based on the discrete element method (DEM). The framework is featured with the construction ...
TL;DR: In this article, the authors proposed a solution to overcome time-consuming numerical analysis for the evaluation of the impact of tunnel construction in a complex karst environment by implementing Monte Carlo Simulation (MCS) using a neural network (NN) tool.
Abstract: This paper offers a solution to overcome time-consuming numerical analysis for the evaluation of the impact of tunnel construction in a complex karst environment by implementing Monte Carlo Simulation (MCS) using a neural network (NN) tool. The rock mass is described using three parameters: Geological Strength Index, the uniaxial compression strength of the intact rock, and the Hoek–Brown parameter for the intact rock mi . By using their probabilistic distribution as an input, a developed neural network NetTUNN produces probabilistic distributions of tunnel crown displacement, rock bolt axial load, and shotcrete uniaxial compression stress. A full MCS is then applied on these NetTUNN outputs to determine the reliability index and probability of failure for the relevant limit states. To demonstrate the potential of NN in tunnel design, a case study of Tunnel Pecine in Croatia is used, where the NetTUNN-assisted MCS assessment served as a benchmark to evaluate approximate reliability assessment techniques. It was shown that the developed NN can be used as an accurate surrogate model for determination of probabilistic distributions of tunnel design parameters. Further, it was shown that approximate reliability assessment techniques generally overestimate the reliability index and underestimate the probability of failure when compared to the NetTUNN-assisted MCS.
TL;DR: In this article, the role of fine soil and coarse grains in soil water retention property was investigated in the French conventional rail track, where an interlayer soil identified in the traditional rail track corresponded to a mixture of coarse soil and fine soil.
Abstract: An interlayer soil identified in the French conventional rail track corresponded to a mixture of fine soil and coarse grains. To investigate the role of fines in the soil-water retention property o...
TL;DR: In this article, a new experimental series on the highly plastic (plasticity index, IP = 34%) Lower Rhine clay (LRC) is presented, which comprises tests on normally as well as overconsolidated samples under mon...
Abstract: A new experimental series on the highly plastic (plasticity index, IP = 34%) Lower Rhine clay (LRC) is presented. The study comprises tests on normally as well as overconsolidated samples under mon...
TL;DR: In this paper, a ground modification technique using a fiber-reinforced load-transfer platform and columns-supported embankment constructed on multi-layered soft soils is proposed.
Abstract: In this investigation, a ground-modification technique utilising a fibre-reinforced load-transfer platform (FRLTP) and columns-supported (CS) embankment constructed on multi-layered soft soils is p...
TL;DR: In this paper, different approaches have been proposed to model rock creep behaviour; however, many cannot reproduce tertiary creep (i.e., accele..., which is crucial in many rock engineering projects.
Abstract: Rock creep behaviour is crucial in many rock engineering projects. Different approaches have been proposed to model rock creep behaviour; however, many cannot reproduce tertiary creep (i.e., accele...
TL;DR: In this paper, the impact of erosion of non-plastic fine particles, known as suffusion, on the soil structure and strength has been studied experimentally in a dam failure scenario.
Abstract: One of the leading causes of dam failure is internal erosion. The impact of erosion of non-plastic fine particles, known as suffusion, on the soil structure and strength has been studied experiment...
TL;DR: The long-term performance of geomembranes with 12 different resin-antioxidant masterbatch combinations, including eight high-density polyethylene (HDPE), three linear low density polyethylenes (LLDPE), was analyzed in this article.
Abstract: The long-term performance of geomembranes with 12 different resin–antioxidant master-batch combinations, including eight high-density polyethylene (HDPE), three linear low-density polyethylene (LLD...
TL;DR: In this article, the authors focus on a particular phenomenon related to the reduction in sand-pile skin friction with initial relative density increment from medium-to-dense to dense.
Abstract: This study focuses on a particular phenomenon related to the reduction in sand–pile skin friction with initial relative density increment from medium to dense. Frictional behaviour of a sand–pile i...
TL;DR: In this article, the pore pressure variations at shallow depths and associated superficial slope movements were found to be associated with soil-vegetation-atmosphere interaction, and it was shown that the ef...
Abstract: Soil-vegetation-atmosphere interaction is long known to induce significant pore pressure variations at shallow depths and associated superficial slope movements. Recent findings suggest that the ef...