Article
Computer Science, Interdisciplinary Applications
Ji-Yun Chang, Shi-Jin Feng
Summary: This article proposes a constitutive model for describing the shear behavior of geosynthetic interfaces under both static and dynamic conditions based on the disturbed state concept. By considering the coupling effect between the intact state and the fully disturbed state, the model performs well in describing the behavior of geosynthetic interfaces.
COMPUTERS AND GEOTECHNICS
(2022)
Article
Chemistry, Multidisciplinary
Pei Zhang, Shijia Ding, Kang Fei
Summary: The study found that a rough interface leads to strain softening in dense sand, while loose sand and dense sand generally shrink in volume during the cyclic process. Additionally, the unloading stiffness of the sand-steel interface is always greater than the initial loading stiffness.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Chemical
Abdulmuttalip Ari, Suat Akbulut
Summary: In this research, the effects of particle shape and surface structure on sand-geosynthetic interface shear strength were quantitatively investigated using fractal theory. The results show that the interface shear strength is influenced by the fractal dimension and surface hardness of the materials.
Article
Engineering, Geological
P. Pavanello, P. Carrubba, N. Moraci
Summary: This study focuses on evaluating the shear strength of geosynthetic-geosynthetic interfaces under low normal stress conditions typical of landfill cover systems. Different sliding mechanisms were observed, and recommendations were made for selecting representative friction parameters for different types of sliding.
GEOTEXTILES AND GEOMEMBRANES
(2021)
Article
Engineering, Geological
Shi-Jin Feng, Yang Shen, Qi-Teng Zheng, Jia-Liang Shi
Summary: This paper presents a new direct shear apparatus for investigating the shear characteristics of the geosynthetic liner system GMB/GCL interface. Through shear tests under different conditions, the phased shear mechanism of the GMB/GCL interface is revealed, providing insights into the shear behavior and strength of such interfaces.
Article
Engineering, Geological
Danial Shirkavand, Kazem Fakharian
Summary: The shear modulus (G) in sands changes with variations in the degree of saturation. The matric suction in unsaturated sands increases the effective stress and consequently the shear modulus. The relationship between G/Gsat variations and matric suction is complex and requires in-depth evaluations.
ENGINEERING GEOLOGY
(2023)
Article
Engineering, Geological
Rizwan Khan, Gali Madhavi Latha
Summary: To understand the process of mobilisation of shear strength in sand-geosynthetic interfaces at a fundamental level, the size and shape of the grains and the shear-induced surface changes in geosynthetics need to be precisely characterized. In this study, shear behavior of dilative and non-dilative geosynthetics interfacing with sands of different morphological characteristics was analyzed through interface shear tests and digital imaging techniques. The shape parameters of sands and surface changes in geosynthetic surfaces were quantified using X-ray micro computed tomography (mu CT), optical profilometry, and laser profilometry. Interface shear tests revealed the effects of irregularity, angularity, and surface texture of particles on the peak and residual friction angles. The surface texture of geotextile surfaces resulted in higher interface friction and displacement compared to geomembrane surfaces, which showed non-dilative behavior. The shear zone thickness and microscopic shearing mechanisms were quantified using digital image correlation (DIC) analysis.
GEOTEXTILES AND GEOMEMBRANES
(2023)
Article
Construction & Building Technology
Ahmed Moussa, Hany El Naggar, Abouzar Sadrekarimi
Summary: The study focuses on the dynamic characteristics of granulated rubbers under cyclic loading, revealing the importance of understanding their behavior under different stress levels. The shear modulus and damping ratio are crucial parameters for evaluating the material performance and suitability in civil engineering applications. The comparison between cyclic triaxial and cyclic simple shear tests provides insights into the dynamic properties of granulated rubber and their independence from vertical consolidation stress.
Article
Engineering, Geological
Fei-yu Liu, Meng-jie Ying, Guo-hui Yuan, Jun Wang, Zi-yang Gao, Jun-feng Ni
Summary: The study shows that the particle regularity has a strong impact on the interface shear strength and deformation, with the vertical displacement ratio increasing with regularity. The interface stiffness increases with the cycle number for lower particle regularities but decreases for higher regularities. Additionally, the damping ratio trends opposite to shear stiffness with increasing cycle number.
GEOTEXTILES AND GEOMEMBRANES
(2021)
Article
Chemistry, Multidisciplinary
Paolo Pavanello, Paolo Carrubba, Nicola Moraci
Summary: This paper evaluates the interface friction of geosynthetic materials under low normal stress by comparing the results of the inclined plane test and an unconventional direct shear test. The study confirms the validity of both test approaches.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Geological
Hanrui Zhao, Kuo Tian
Summary: This study investigated the impact of polymer elution on the interface shear strength between a smooth geomembrane (GMB) and two types of bentonite-polymer (B-P) geosynthetic clay liners (GCLs) containing linear and crosslinked polymers. The results showed that polymer elution had a significant effect on the GMB/B-P GCL interface shear strength, especially at higher normal stress.
GEOTEXTILES AND GEOMEMBRANES
(2023)
Article
Engineering, Civil
Mengjie Ying, Feiyu Liu, Jun Wang, Chaoliang Wang, Mingfeng Li
Summary: Accurate measurement of particle shapes is essential for studying the cyclic shear behavior of a soil-geogrid interface. The study showed that the interface underwent cyclic shear hardening within a certain relative density range, with hysteresis loop area and cyclic peak shear strength increasing with shear displacement amplitude and decreasing with particle regularity. Additionally, the friction angle decreased linearly with increasing particle regularity in both monotonic and post cyclic direct shear tests.
TRANSPORTATION GEOTECHNICS
(2021)
Article
Engineering, Geological
Shengjie Rui, Lizhong Wang, Zhen Guo, Wenjie Zhou, Yujie Li
Summary: This paper investigates the shear behavior of the interface between carbonate sand and steel through a series of shear tests. Factors influencing the behavior such as cyclic amplitude, particle size, surface roughness and normal stress were discussed. The results show that cyclic interface shear results in higher interface shear strength compared to monotonic shear.
Article
Engineering, Geological
Mahmud Amer Al Tarhouni, Bipul Hawlader
Summary: Direct simple shear tests were conducted to investigate the cyclic behavior, dynamic properties, and stress-dilatancy relationship of fine-grained silica sand. The volumetric strain was found to be related to the vertical stress and shear strain amplitude. The cyclic shear modulus decreased and the damping ratio increased with shear strain amplitude, influenced by the low-amplitude cyclic loading history. The volume change was related to the cyclic stress-dilatancy relationship, which depended on various factors such as vertical stress, shear strain amplitude, number of cycles, and shearing direction. In some tests, the stress-dilatancy relationship could be represented by two parallel lines for unloading and reloading, except for the initial parts. The increase in density with cyclic loading reduced the contractive behavior and increased the dilative response, resulting in a slower rate of volumetric compaction with more cycles.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2023)
Article
Construction & Building Technology
Rila Anda, Long Wang, Meng-jie Ying, Yun-teng Huang
Summary: Recycled concrete aggregate (RCA) has been studied as a substitute for natural aggregate in reinforced soil structures. The effects of particle-size gradation on the shear properties of RCA-geogrid interface were investigated using direct shear tests. The results showed that the geogrid significantly improved the interface peak strength and reduced the vertical displacement of RCA. The shear strength of the interface increased with an increase in relative density and the well-graded RCA-geogrid interface exhibited the largest shear stiffness.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2023)
Article
Agricultural Engineering
Mohsen Taghavijeloudar, Junboum Park, Shervin Hashemi, Mooyoung Han
BIORESOURCE TECHNOLOGY
(2019)
Review
Environmental Sciences
Shahabaldin Rezania, Junboum Park, Parveen Fatemeh Rupani, Negisa Darajeh, Xin Xu, Rahim Shahrokhishahraki
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2019)
Article
Environmental Sciences
Xin Xu, Xiaofeng Liu, Myounghak Oh, Junboum Park
POLISH JOURNAL OF ENVIRONMENTAL STUDIES
(2019)
Article
Environmental Sciences
Rahim Shahrokhi-Shahraki, Patrick Sun Kwon, Junboum Park, Brendan C. O'Kelly, Shahabaldin Rezania
Article
Engineering, Environmental
Xin Xu, Xiaofeng Liu, Myounghak Oh, Junboum Park
Article
Multidisciplinary Sciences
Amirreza Talaiekhozani, Farhad Banisharif, Zeinab Eskandari, Mohammad Reza Talaei, Junboum Park, Shahabaldin Rezania
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2020)
Article
Environmental Sciences
Cecilia Torres-Quiroz, Janith Dissanayake, Junboum Park
Summary: This study investigated the performance of Oyster shell powder, zeolite, and red mud as binders for stabilisation/solidification technique. The results showed that Oyster shell powder was the most effective low-cost adsorbent material for stabilizing toxic metals in contaminated soils.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Environmental Sciences
Janith Dissanayake, Cecilia Torres-Quiroz, Jyoti Mahato, Junboum Park
Summary: Single-use disposable facemasks are being dumped into water bodies, potentially releasing microplastic fibers into the environment and affecting various ecosystems. A preliminary study in South Korea found that surgical and KF94 standard facemasks released the highest number of microplastic fibers, with one mask capable of releasing up to 47 microplastic fibers per day. Moreover, prolonged agitation time led to a significant increase in the number of released microplastic fibers.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Environmental Sciences
Fatemeh Biglar, Amirreza Talaiekhozani, Farham Aminsharei, Junboum Park, Anahita Barghi, Shahabaldin Rezania
Summary: This study synthesized a nano ZnO-Nd photocatalyst using the combustion method to remove Reactive red 198 from wastewater. The experiments optimized the decolorization process in a falling-film photocatalytic reactor under optimum operating conditions.
Article
Environmental Sciences
Haomin Lei, Xin Xu, Xiaofeng Liu, Junboum Park, Zhongyu Yu, Hao Liu
Summary: With the rapid development of urbanization, heavy metal pollution has become a serious environmental issue, particularly in soil and groundwater. This study proposed the concept of hybrid-fill layer construction improved by red mud to prevent the diffusion of heavy metals in soil from industrial sewage. The study investigated the adsorption capacities and engineering characteristics of red mud-amended soils for lead and zinc ions through various tests. The results showed that red mud effectively increased the adsorption capacity of soil to heavy metal ions and had good anti-desorption ability. The optimal content of red mud in the hybrid-fill material was determined to be 20%. Red mud can be used as a barrier material to prevent heavy metal contamination and consume industrial by-products.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Green & Sustainable Science & Technology
Jiashi Li, Xiaoqiang Dong, Xiaofeng Liu, Xin Xu, Wei Duan, Junboum Park, Lei Gao, Yisi Lu
Summary: This study comparatively investigated the adsorption capacities of peanut shells, sawdust, and commercial activated carbon for heavy metal ions from water. The results showed that different adsorption parameters and properties of adsorbents influenced the removal rates of heavy metal ions. The adsorption processes followed Langmuir or Freundlich isotherm models and were spontaneous heat absorption reactions. Peanut shells can be used as a green adsorbent to replace activated carbon for heavy metal ion adsorption.
Proceedings Paper
Engineering, Environmental
Junboum Park, Xin Xu, Myounghak Oh, Kwangseok Chae, Sungwook Kim, Kijae Lee, Yoonkoog Hwang
ENVIRONMENTAL GEOTECHNOLOGY (EGRWSE 2018)
(2019)
Article
Materials Science, Paper & Wood
Shahabaldin Rezania, Hossein Alizadeh, Jinwoo Cho, Negisa Darajeh, Junboum Park, Beshare Hashemi, Mohd Fadhil Md Din, Santhana Krishnan, Krishna Kumar Yadav, Neha Gupta, Sandeep Kumar
Article
Materials Science, Paper & Wood
Xiaofeng Liu, Xin Xu, Xiaoqiang Dong, Junboum Park
Article
Materials Science, Paper & Wood
Shahabaldin Rezania, Hossein Alizadeh, Junboum Park, Mohd Fadhil Md Din, Negisa Darajeh, Shirin Shafiei Ebrahimi, Bidyut Baran Saha, Hesam Kamyab