Article
Construction & Building Technology
Zi Ying, Yu-Jun Cui, Nadia Benahmed, Myriam Duc
Summary: The study investigated the effects of curing time and salinity on the water retention property and pore size distribution of lime-treated soil. The matric suction increased significantly with curing time, while the total suction varied slightly. Soil specimens with higher salinity exhibited higher matric and total suctions. The pore size distribution of lime-treated soil changed with time, shifting from bi-modal to tri-modal pattern and back to bi-modal due to clay shrinkage-related cracking. Lime treatment inhibited clay shrinkage, while the effects of curing time and salinity on microstructure were insignificant.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Thermodynamics
Xiangang Zhou, Songhe Wang, Xiaoliang Yao, Weihang Ye, Jiulong Ding
Summary: The study investigated the relationship between freezing point and suction of four types of chloride loess samples, finding that different chloride salts have different effects on the freezing point and suction of the samples, with a linear decrease in freezing point at higher salt contents. The higher the cation content, the more significant the freezing point depression. Additionally, the freezing point of samples is influenced by both matric suction and osmotic suction.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Construction & Building Technology
Wen-tong Tian, Jian-hua Dong, Jun-jie Sun, Bo Yang
Summary: The study reveals the influence of different factors on the strength of unsaturated loess, with water content causing a decrease in strength, dry density leading to an increase in strength, and clay content contributing to an increase in internal friction angle. The findings offer practical references for engineering design.
ADVANCES IN CIVIL ENGINEERING
(2021)
Article
Engineering, Geological
Pubudu Jayathilaka, Buddhima Indraratna, Ana Heitor
Summary: This study focuses on the positive influence of salinity on coastal soil shear strength, proposing a semiempirical model to capture this effect. Results indicate that salinity plays a significant role in soil mechanical properties, with a new parameter introduced to quantify this influence.
INTERNATIONAL JOURNAL OF GEOMECHANICS
(2021)
Article
Engineering, Civil
Hao-ru Zhang, Xiao-qiang Dong, Xi-dong Zhang, Ming-xing Xie
Summary: This study proposed an analytical approach that considered the strain in geosynthetic reinforcements and the impact of matric suction. The findings demonstrate that the method developed here produces more conservative results compared to existing design methodologies.
EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING
(2023)
Article
Engineering, Geological
Regina Tavares Delcourt, Tacio Mauro Pereira de Campos, Franklin dos Santos Antunes
Summary: It is widely recognized that the engineering behavior of soils is closely related to its structure. The structure of residual soils, which are derived from in situ weathering of the mother rock without transportation, varies with the weathering degree of the material. Residual soils are typically unsaturated. This study presents experimental analysis of the structure and water retention characteristics of a phacoidal gneiss residual soil. The results show that the weathering degree affects the pore distribution and water retention characteristics of the double-structure type of tested soils in different ways.
ENGINEERING GEOLOGY
(2022)
Article
Engineering, Environmental
Songhe Wang, Xiangang Zhou, Sheng Wang, Jian Xu, Jiulong Ding
Summary: This study evaluated the range of salt weathering in loess check dams during freeze-thaw and investigated the factors of freezing point, suction, and microstructure. The results showed that the freezing point of the soil decreased with freeze-thaw cycles, which was related to the pore structure and particle morphology. The matric suction decreased, while the osmotic suction was less correlated. A modified model considering the relationship between soil freezing point and suction was suggested and verified.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2023)
Article
Construction & Building Technology
Sin -Mei Lim, Buddhima Indraratna, Ana Heitor, Kai Yao, Dalong Jin, Wael M. Albadri, Xia Liu
Summary: This paper presents experimental results on the influence of matric suction on the resilient modulus and California bearing ratio of compacted subgrade Ballina clay. The study also examines the macrostructure of the compacted specimens using CT scans.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Geological
Ang Liu, Shimin Liu
Summary: Roof instability in underground coal mines is influenced by air humidity variations and duration of roof exposure. Moisture-sensitive shales can deteriorate over time and lead to skin failure and roof falls. A Time-Dependent Rock-Fluid-Geomechanics Model was developed to analyze the interactions across different fields and provide a pathway for stability assessment in rock structures.
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2021)
Article
Engineering, Geological
Ke Chen, Fayun Liang
Summary: This study investigates the shear behavior of the Shanghai clay-concrete interface under cyclic loading. The experimental findings show that the matric suction has a significant influence on the interfacial strength, and the shear strength of the interface decreases with an increasing number of shear cycles. Water content affects the interface shear strength and the vertical cumulative displacement of the soil.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Environmental
S. Bulolo, E. C. Leong, R. Kizza
Summary: The study discusses the effects of drying and wetting cycles on soil, particularly in relation to crack formation and tensile strength. Existing tensile strength models for unsaturated soils were found to have limitations, leading to the proposal of a new model that can be applied to both coarse-grained and fine-grained soils. The new model was shown to outperform existing models in terms of performance.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2021)
Article
Environmental Sciences
Keyu Wang, Zheng Gong, Kun Zhao, Shuai Tang, Kaili Zhang
Summary: This study investigates the coupled role of seepage and surface flow on bank retreat. Seepage erosion causes a rapid decrease in matric suction, undercutting of the bank toe, formation of tension cracks on the bank top, and potentially toppling or shear failure. Surface flow promotes cantilever formation and erosion of slump blocks, leading to additional bank failure. The inclusion of surface flow reduces the frequency of toppling failure but increases the contribution to bank retreat. Three-dimensional experiments collapse at least 1.5 hours earlier than two-dimensional experiments, highlighting the importance of preferential flow pathways. This research provides valuable insight into the complex mechanisms driving bank retreat.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Engineering, Geological
Giulia Scelsi, Ayman A. Abed, Gabriele Della Vecchia, Guido Musso, Wojciech T. Solowski
Summary: This paper presents a simple elasto-plastic model capable of reproducing the behaviour of unsaturated clayey soils in saline environments by considering osmotic suction as a variable. The model, implemented in Thebes code and calibrated for Boom Clay, shows promising agreement between experimental results and simulations, addressing the important features of partially saturated soils with saline pore fluid.
ENGINEERING GEOLOGY
(2021)
Article
Computer Science, Interdisciplinary Applications
Longxiao Guo, Guangqi Chen, Shilin Gong, Hao Sun, Krisadawat Chantat
Summary: This study introduces a matric suction model into Discontinuous Deformation Analysis (DDA) to analyze rainfall-induced landslides, showing that the loss of apparent cohesion is an important mechanism for landslide initiation and long-runout distances. The extended DDA is proved to be a qualified tool for analyzing shallow slope stability and post-failure behavior involving apparent cohesion.
COMPUTERS AND GEOTECHNICS
(2021)
Article
Engineering, Geological
Yupeng Shen, Tianxiao Tang, Duli Wang, Mo Chen, Yue Liu, Yong Wang
Summary: The main difference between horizontal freezing and vertical freezing is the dynamic change in the nonzero angle between the directions of matric suction and gravity. Current theories mainly focus on vertical freezing and ignore the interactions between driving force components during horizontal freezing. Based on soil water potential theory, the driving force of water migration in unsaturated silt during horizontal freezing is investigated. Experimental tests are conducted to explore the uniqueness of horizontal freezing, and equations for calculating the nonzero angle are derived. The evolution of the nonzero angle during horizontal freezing and the influence of different factors are summarized based on theoretical analysis and numerical calculation.
Article
Engineering, Geological
C. W. W. Ng, Z. J. Wang, A. K. Leung, J. J. Ni
Article
Engineering, Geological
Gerrit J. Meijer, David Muir Wood, Jonathan A. Knappett, Glyn A. Bengough, Teng Liang
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
(2019)
Article
Plant Sciences
Nicolai Koebernick, Keith R. Daly, Samuel D. Keyes, Anthony G. Bengough, Lawrie K. Brown, Laura J. Cooper, Timothy S. George, Paul D. Hallett, Muhammad Naveed, Annette Raffan, Tiina Roose
Article
Agronomy
M. Naveed, M. A. Ahmed, P. Benard, L. K. Brown, T. S. George, A. G. Bengough, T. Roose, N. Koebernick, P. D. Hallett
Article
Engineering, Geological
Teng Liang, Jonathan Adam Knappett, Anthony K. Leung, A. Glyn Bengough
Article
Engineering, Geological
Teng Liang, Jonathan Adam Knappett, Anthony Leung, Andrew Carnaghan, Anthony Glyn Bengough, Rui Zhao
Article
Ecology
D. Boldrin, A. K. Leung, A. G. Bengough, H. G. Jones
ECOLOGICAL ENGINEERING
(2019)
Article
Engineering, Geological
David Boldrin, Anthony K. Leung, Anthony Glyn Bengough
Summary: This study conducted field monitoring to compare the hydro-mechanical reinforcement provided by three contrasting woody species and found that evergreen species have stronger water uptake capabilities, leading to higher matric suction and soil shear strength.
Article
Plant Sciences
Adalvan D. Martins, Felicity O'Callaghan, A. Glyn Bengough, Kenneth W. Loades, Moacir Pasqual, Evelyne Kolb, Lionel X. Dupuy
Article
Agronomy
S. Ruiz, N. Koebernick, S. Duncan, D. McKay Fletcher, C. Scotson, A. Boghi, M. Marin, A. G. Bengough, T. S. George, L. K. Brown, P. D. Hallett, T. Roose
Article
Forestry
Gerrit Meijer, Glyn Bengough, Jonathan Knappett, Kenneth Loades, Bruce Nicoll
Article
Plant Sciences
Dorien J. Vanhees, Kenneth W. Loades, A. Glyn Bengough, Sacha J. Mooney, Jonathan P. Lynch
JOURNAL OF EXPERIMENTAL BOTANY
(2020)
Article
Plant Sciences
Jasmine E. Burr-Hersey, Karl Ritz, Glyn A. Bengough, Sacha J. Mooney
JOURNAL OF EXPERIMENTAL BOTANY
(2020)
Article
Plant Sciences
Gregoire T. Freschet, Catherine Roumet, Louise H. Comas, Monique Weemstra, A. Glyn Bengough, Boris Rewald, Richard D. Bardgett, Gerlinde B. De Deyn, David Johnson, Jitka Klimesova, Martin Lukac, M. Luke McCormack, Ina C. Meier, Loic Pages, Hendrik Poorter, Ivan Prieto, Nina Wurzburger, Marcin Zadworny, Agnieszka Bagniewska-Zadworna, Elison B. Blancaflor, Ivano Brunner, Arthur Gessler, Sarah E. Hobbie, Colleen M. Iversen, Liesje Mommer, Catherine Picon-Cochard, Johannes A. Postma, Laura Rose, Peter Ryser, Michael Scherer-Lorenzen, Nadejda A. Soudzilovskaia, Tao Sun, Oscar J. Valverde-Barrantes, Alexandra Weigelt, Larry M. York, Alexia Stokes
Summary: Based on a review of various aspects in plant physiology and ecology, it is evident that there are complex relationships between root traits and functions, with many knowledge gaps still remaining. Future research should focus on considering a more comprehensive range of functionally relevant traits across different species, environments and time series in order to establish causal hierarchical links among root traits.
Correction
Plant Sciences
A. Glyn Bengough, Elison B. Blancaflor, Ivano Brunner, Louise H. Comas, Gregoire T. Freschet, Arthur Gessler, Colleen M. Iversen, Stepan Janecek, Jitka Klimesova, Hans Lambers, M. Luke McCormack, Ina C. Meier, Liesje Mommer, Loic Pages, Hendrik Poorter, Johannes A. Postma, Boris Rewald, Laura Rose, Catherine Roumet, Peter Ryser, Verity Salmon, Michael Scherer-Lorenzen, Nadejda A. Soudzilovskaia, Nishanth Tharayil, Oscar J. Valverde-Barrantes, Monique Weemstra, Alexandra Weigelt, Nina Wurzburger, Larry M. York, Marcin Zadworny