Article
Chemistry, Physical
Wei-yun Liang, Rong-tao Yan, Yong-fu Xu, Qin Zhang, Hui-hui Tian, Chang-fu Wei
Summary: A series of wetting experiments were conducted on compacted expansive clay to evaluate swelling pressure generated over a wide suction range. The study showed that the evolution of soil microstructure during wetting affects the development of swelling pressure, which is nonmonotonic with decreasing suction. Soil water retention characteristics were found to be independent of dry density at high suction, with a threshold suction identified to distinguish between adsorbed and capillary waters.
APPLIED CLAY SCIENCE
(2021)
Article
Engineering, Geological
Ashutosh Kumar, Arash Azizi, David Geoffrey Toll
Summary: This paper presents a suction monitoring setup for soil cyclic triaxial testing and its application to evaluate soil water retention and volumetric response. The results show that the soil water retention and volumetric response are influenced by factors such as suction level, stress levels, and degree of saturation.
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2022)
Article
Engineering, Chemical
Chuanyi Ma, Jinglei Li, Fangfang Jiao, Yiyi Liu, Haojie Feng, Kai Wang, Hongguang Jiang, Chao Jiang, Yixin Li, Xueyu Geng
Summary: In this study, hydraulic loading tests were conducted on compacted fine soil subjected to wetting-drying cycles. The effects of different wetting-drying paths on soil characteristics such as moisture content, void ratio, and shear modulus were analyzed. The results showed that wetting-drying cycles weakened the soil's water retention capacity and resulted in volume expansion and modulus degradation.
Article
Engineering, Geological
Penghai Yin, Sai K. Vanapalli
Summary: Tensile strength is an important parameter in the design of earth structures made of compacted clayey soils. However, experimental studies on the tensile strength considering the influence of confining pressure are limited. This study develops a novel technique to measure triaxial tensile strength and finds that it increases with initial matric suction and shows a non-monotonic variation with confining pressure.
GEOTECHNICAL TESTING JOURNAL
(2023)
Article
Construction & Building Technology
Mayssa Alves da Silva Sousa, Roberto Quental Coutinho, Laura Maria Goretti da Motta
Summary: This article evaluates the unsaturated behavior of fine-grained tropical soils and its suitability for use in transport infrastructure. The study conducted an extensive experimental campaign covering various tests. The results showed highly weathered soils with excellent resilient modulus, making them suitable for high traffic pavement. Regression equations were proposed to predict the resilient modulus based on parameters and stress values.
ROAD MATERIALS AND PAVEMENT DESIGN
(2023)
Article
Computer Science, Interdisciplinary Applications
Zhiqiang Lin, Jiangu Qian, Zhenhao Shi
Summary: This study introduces a novel model to estimate the shear strength of expansive soils. Experimental results show a linear relationship between capillary suction stress and shear strength, but the friction angle contributed to shear strength is different from the internal friction angle of saturated soils.
COMPUTERS AND GEOTECHNICS
(2022)
Article
Engineering, Geological
Shay Nachum, Mark Talesnick, Alex Furman
Summary: The paper discusses three issues related to using TDR methods to monitor water content in compacted clay soils: dependence on dry density, ability to monitor water content in nearly saturated clay soils, and difficulties in calibration. A calibration scheme that controls dry density has been developed, allowing continuous calibration curves for a range of water content. This approach has been used to monitor a wetting front in a compacted swelling clay in a laboratory setting.
CANADIAN GEOTECHNICAL JOURNAL
(2023)
Article
Environmental Sciences
Lin Zhang, Tonglu Li, Yaguo Zhang
Summary: Large-scale newly built high fills can cause catastrophic subsidence of compacted loess, which is dependent on the initial void ratio and moisture content. This study investigated the influence of these factors on the compressibility and compressive yield stress of compacted loess, as well as the relationship between SWCCs and initial void ratio. The findings suggest that the wetting-induced collapse behavior can be predicted based on the critical suction value and initial void ratio, with parameters that can be determined through conventional tests.
ENVIRONMENTAL EARTH SCIENCES
(2023)
Article
Engineering, Multidisciplinary
Aneke Frank Ikechukwu, Mohamed M. H. Mostafa
Summary: This study developed multiple regression equations to predict swelling pressure using the relationship between unsaturated soil mechanics parameters and geotechnical soil properties. Experimental results showed good agreement between the measured and predicted values, demonstrating the accuracy of the developed models.
INTERNATIONAL JOURNAL OF ENGINEERING RESEARCH IN AFRICA
(2022)
Proceedings Paper
Engineering, Civil
Armand Augustin Fondjo, Elizabeth Theron, Richard P. Ray
Summary: Soil suction plays a major role in unsaturated soil behavior and its estimation is challenging in both lab and field settings. While the filter paper method is simple, it can be time-consuming. Developing mathematical predictive models for soil suction is imperative to alleviate the need for extensive testing.
14TH BALTIC SEA REGION GEOTECHNICAL CONFERENCE
(2021)
Article
Chemistry, Multidisciplinary
Kousuke Usui, Takaaki Yoshimura, Minghui Tang, Hiroyuki Sugimori
Summary: Estimation of human age using brain magnetic resonance (MR) images is important and noninvasive. This study developed an age estimation method based on T1-weighted two-dimensional brain MR imaging of 1000 subjects aged 5-79 years. The regression model, based on ResNet-50, achieved a high estimation accuracy across a wide range of age groups, showing similar correlation to previous studies.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Geological
Sathiyamoorthy Rajesh
Summary: In this study, the strength and deformation behavior of compacted natural soil under two different drainage conditions were evaluated using laboratory tests. The results showed that the drainage conditions have an impact on the engineering properties of soil. Therefore, it is important to consider the short- and long-term mechanical behavior of the soil when assessing and rehabilitating these geostructures.
INDIAN GEOTECHNICAL JOURNAL
(2023)
Article
Engineering, Geological
Bo Chen, You Gao, De'an Sun, Jie Li
Summary: The article discussed the mechanical behavior of unsaturated soils at high suctions based on measured data, finding that the soil-water retention behavior is independent of dry density or void ratio.
GEOTECHNICAL TESTING JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Moin Ahmed, Zhiyu Mao, Yun Zheng, Tao Chen, Zhongwei Chen
Summary: This study explores the parameters that strongly affect the range of electric vehicles (EVs) using data-driven techniques. Strong correlations were observed between range and battery capacity, top speed, curb weight, and acceleration. Regression algorithms were trained and tested on a dataset, and the lowest root-mean-squared error (RMSE) of 31.4 km was obtained, resulting in an accuracy of around 8.6%. Additionally, simple linear relationships between EV range and EV model, battery, and performance parameters were determined.
WORLD ELECTRIC VEHICLE JOURNAL
(2022)
Article
Engineering, Geological
Zhao Yu-xin, Li Xu, Lin Sen, Wang Xiao-meng
Summary: An improved shear strength model for unsaturated soils is proposed based on a systematic investigation of the effect of soil type. The model is verified to demonstrate good agreement between predicted and measured shear strength results. The study categorizes the shear strength of different soil types into two types and provides the physical meaning and recommended values of model parameters for each type.
ROCK AND SOIL MECHANICS
(2023)
Article
Engineering, Geological
Negin Zhalehjoo, Didier Bodin, Geoffrey Jameson, Andrew Papacostas, Ross Guppy
Summary: Foamed bitumen stabilization is a sustainable solution for construction and rehabilitation of pavements, and it improves pavement performance. This paper focuses on the development of a fatigue relationship for Foamed bitumen stabilized (FBS) materials, which will assist in thickness design of FBS flexible pavements.
GEOTECHNICAL TESTING JOURNAL
(2024)
Article
Engineering, Geological
Alejandra Lopez Ramirez, Yinning Zhang, Juha Forsman, Leena Korkiala-Tanttu
Summary: This paper presents the results of an extensive testing program on the stabilization of Finnish soft clay using low emissions binders. The alternative binders, including by-products and pozzolanas, showed higher strength than traditional binders at various densities. Additionally, a simplified CO2 emissions calculation procedure for DDM design and different emissions factors for the investigated binders were proposed.
GEOTECHNICAL TESTING JOURNAL
(2024)
Article
Engineering, Geological
Ashray Saxena, V. Vinay Kumar, Natalia S. Correia, Jorge G. Zornberg
Summary: Reclaimed asphalt pavement (RAP) is widely used in road construction due to its economic and environmental benefits. This study evaluates the millability and recyclability of asphalt layers with paving interlayers (GRAP). It finds that GRAP can be reused in base and surface courses, leading to sustainable roadway construction practices.
GEOTECHNICAL TESTING JOURNAL
(2024)
Article
Engineering, Geological
Buddhima Indraratna, Chathuri M. K. Arachchige, Cholachat Rujikiatkamjorn, Ana Heitor, Yujie Qi
Summary: This article discusses the recycling of waste materials produced in the coal and steel industry as well as the reusing of waste tires, which is a high priority in Australia's urban infrastructure development for environmental preservation. The practical applications of these waste materials in coastal reclamation and road and rail construction are presented, along with comparisons to traditional quarried materials. The research outcomes demonstrate that properly engineered waste mixtures can exceed current technical standards and reduce maintenance intensity, supporting sustainable solutions for future transportation infrastructure development.
GEOTECHNICAL TESTING JOURNAL
(2024)
