Article
Environmental Studies
Sechan Park, Min-kyeong Kim, Michael Versoza, Jaeseok Heo, Minjeong Kim, Duckshin Park
Summary: This study investigated the characteristics and concentrations of fugitive dust generated from railway maintenance vehicles operating on gravel tracks. The concentrations of fugitive dust were measured for different types of vehicles. The results can be used as baseline data for future studies on the environmental impacts of gravel track and precast concrete slab track use.
TRANSPORTATION RESEARCH PART D-TRANSPORT AND ENVIRONMENT
(2022)
Article
Engineering, Electrical & Electronic
Minyoung Jeong, Sarbajit Paul, Junghwan Chang, Hak-Ki Lee, Subhas Mukhopadhyay
Summary: The study focuses on investigating fugitive dust generation and detection methods in South Korean cities, including designing a virtual platform and developing sensor systems, as well as evaluating the effectiveness of dustproof nets.
IEEE SENSORS JOURNAL
(2021)
Article
Meteorology & Atmospheric Sciences
Tingkun Li, Simeng Ma, Weizhao Liang, Linxuan Li, Qili Dai, Xiaohui Bi, Jianhui Wu, Yufen Zhang, Yinchang Feng
Summary: This study used a high spatiotemporal resolution soil fugitive dust emission inventory to estimate the contribution of soil dust to urban ambient particulate, and verified the accuracy of the compilation method. The simulation results were consistent with observations, showing reasonable relative proportions of soil dust contributions to PM2.5 and PM10 in different seasons and cities.
ATMOSPHERIC RESEARCH
(2021)
Article
Acoustics
Zhe Shen, Zhigang Yang, Yigang Wang
Summary: This study focused on the relationship between jet shear layer and acoustic refraction, finding that the relationship remains valid at the unsteady level under low-speed flow and high-frequency sound conditions. It proposed a new idea for non-contact flow measurement and provided a new method for acoustic source identification and acoustic wind tunnel experiments.
Article
Energy & Fuels
Zidong Zhao, Ping Chang, Guang Xu, Apurna Ghosh, Ramakrishna Morla
Summary: Long-term exposure to coal dust can lead to severe health problems in coal workers, making effective control of coal dust essential. Water spraying with added surfactants is widely used for controlling coal dust. This study investigates the effects of respirable dust sizes on the performance of surfactants, finding that smaller coal dust sizes weaken the surfactants' performance. Different surfactants also show varying suppression efficiency for coal dust.
Article
Polymer Science
Zulhelmi Amir, Ismail Mohd Saaid, Mohd Usman Mohd Junaidi, Wan Zairani Wan Bakar
Summary: Polymer gel treatment is a popular method in the petroleum industry, and adding silica nanoparticles can enhance the performance of weakened PAM/PEI polymer gel, improving viscosity, gelation time, and gel strength.
Article
Polymer Science
Koochul Ji, Lauren K. Stewart, Chloe Arson
Summary: In this study, we used Molecular Dynamics simulations to investigate the injection of cementitious materials with epoxy and the shear deformation at the polymer/concrete interface. The results indicate that injection pressure, temperature, strain rate, and interface roughness all affect the crack filling and interface strength. The mechanical work needed to break the interface is mainly contributed by van der Waals forces, but the interlocking forces play a critical role in interfaces created with long polymer chains.
Article
Environmental Sciences
Minxia Zhang, Ruiqi Wang, Feifei Liu, Ping Xu
Summary: Microbial consolidation of bare soil is an effective method to improve wind erosion resistance and dust suppression ability. The particle size of soil affects the degree of microbial consolidation, with smaller sand particles leading to better consolidation effects. Additionally, microbial consolidation has minimal impact on the pH value and soluble salt content of the soil.
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Soil Science
Monireh Mina, Mahrooz Rezaei, Abdolmajid Sameni, Ali Akbar Moosavi, Coen Ritsema
Summary: This study demonstrated that using reflectance spectroscopy combined with machine learning algorithms is a promising technique for large-scale assessment of wind erosion.
Article
Engineering, Civil
Guan-ning Dong, Ting-guo Chen, Cheng-jiao Ren, Ke Wang
Summary: The shelter effect of porous fence in a bulk terminal was investigated using wind tunnel tests. Different arrangements of porous fences, incoming wind directions, and fence heights were examined to study the dependencies of wind velocity and turbulence intensity on these factors. The study found that the combination of a 14m high porous fence arranged perpendicular to the frequent wind direction had the best wind reduction effect (A=0.77, a=0.90) and the highest economic efficiency. Therefore, the study suggests that arranging the porous fence perpendicular to the normal wind direction can achieve better shelter effect.
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS
(2023)
Article
Agronomy
Guibin Chen, Qingjie Wang, Hongwen Li, Jin He, Caiyun Lu, Shaojun Gong, Dijuan Xu, Xinpeng Cao
Summary: This study compared the effects of conservation tillage and traditional tillage on suppressing farmland dust and wind erosion, with the results showing that stubble + straw mulching had the best inhibitory effect on farmland dust and wind erosion.
Article
Engineering, Environmental
Feng Zhang, Ying Lu, Yapeng Wang, Jiaji Cheng, Zhongan Jiang, Ya Chen, Jihe Chen
Summary: With the advancement of mechanization, the use of fully mechanized excavators in roadway excavation has led to the production of fine dust particles. Studies have shown that cooperative spray dust removal using wall-mounted air ducts based on swirl theory can effectively block and capture dust particles.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Xin-xiao Lu, Hui Zhang, Yi-ming Chen, Jin-xiang Xiao
Summary: In this paper, a full-scale tunnel physical model is constructed to study the effect of wind velocity and drilling site position on the airborne dust pollution scope. The research indicates that increasing wind velocity can alleviate the airborne dust pollution in anchor drilling operations. Additionally, moving the drilling site closer to the exhaust air duct aggravates the airborne dust pollution in the breathing zone.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Johannes L. L. Sieger, Bernd G. G. Lottermoser, Justus Freer
Summary: This study investigates the effect of different biopolymer types, concentrations, and application rates on wind erosion and penetration resistance of mine soils. The results show that all treatments significantly enhance wind erosion resistance, with biopolymer type, concentration, and application rate having a significant effect. Depending on the biopolymer type and application parameter, soil loss ranges from 0.86 to 423.9 g/m(2) for medium-grained sand and from 0.3 to 225 g/m(2) for fine-grained silica sand. The research also reveals a negative correlation between soil loss and penetration resistance, indicating the potential of using pocket penetrometer as a low-cost method for evaluating dust suppressants.
APPLIED SCIENCES-BASEL
(2023)
Article
Materials Science, Multidisciplinary
Daoyao Ke, Peter Tatarko, Nan Luo, Gianmarco Taveri, Milad Kermani, Xiaoyi Wang, Chunfeng Hu, Salvatore Grasso
Summary: The study found that an isostatic pressure of 300 MPa promoted the formation of strong bonds between fused silica pieces, leading to an increase in shear strength. A higher surface roughness resulted in a greater increase in shear strength for the joined samples.
Article
Construction & Building Technology
Huan Zhang, Shuai Cao, Erol Yilmaz
Summary: This study investigates the effect of carbon nanotubes (CNTs) on the strength behavior of cementitious tailings backfill (CTB). The results show that CNTs significantly improve the strength and microstructure of CTB by inhibiting crack expansion and enhancing material integrity. Among them, ordinary multi-walled CNT (CNTPL) has the most significant impact on the mechanical properties of CTB. In conclusion, this study demonstrates that using the fractal properties of microstructure can better estimate the strength development of CTB specimens reinforced with different types of CNTs.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Ziyue Zhao, Shuai Cao, Erol Yilmaz
Summary: For mines with poor ore bodies and surrounding rocks, the most suitable mining method is the downward layered filling mining technique, which can eliminate problems related to poor ore deposit conditions. However, the safety of the artificial roof is crucial in this technique.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2023)
Article
Geochemistry & Geophysics
Bo Gao, Shuai Cao, Erol Yilmaz
Summary: Polypropylene fiber significantly affects the strength and microstructure of cemented tailings backfill. Experimental results show that the compressive strength of fiber-reinforced cemented tailings backfill (FRCTWRF) reaches its highest value of 0.93 MPa at 6 mm fiber length and 0.6 wt.% fiber content. The peak strain of FRCTWRF is highest at 2.88% with 12 mm fiber length and 0.3 wt.% fiber content. Increasing fiber length reduces fracture volume and enhances crack resistance of FRCTWRF.
Article
Construction & Building Technology
Muhammet Sari, Erol Yilmaz, Tugrul Kasap, Servet Karasu
Summary: This study evaluated the strength development and pore structure changes of cementitious mine backfill (CMB) using ultrasonic pulse velocity (UPV) technique. The influence of different types of pyritic tailings on the quality of filling specimens was investigated. The results showed that the total porosity of CMBs decreased with increasing age and binder ratio. The acidic nature of low pH tailings negatively affected the aged strength of CMBs, but these negative effects decreased with slag substitution and high binder dosages. Excellent correlation curves were found between UPV and UCS.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Haiqiang Jiang, Jing Han, Lei Ren, Zhenbang Guo, Erol Yilmaz
Summary: This study explores the characteristics of cemented paste backfill (CPB) with alkali activated slag (AAS) under internal sulfate attack. The results show that increasing sulfate content leads to shorter initial/final setting times and higher yield stresses and viscosities. The presence of sulfate can either enhance or deteriorate the strength of AAS-CPB, depending on activator type and cure age.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Green & Sustainable Science & Technology
Muhammet Sari, Erol Yilmaz, Tugrul Kasap
Summary: This study aims to improve the long-term filling performance of cemented paste backfill (CPB) and reduce cement-related costs and environmental risks by partially substituting tailings with sand. The experimental results showed that using sand as a substitute for tailings in CPB can increase its strength and improve its structure. Additionally, sand contributes to the hydration reactions of cement and prevents acid/leach formations that may occur in the long-term ageing. Overall, the use of sand enhances the performance of CPB and reduces the environmental impacts of tailings.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Engineering, Chemical
Shun-man Chen, Erol Yilmaz, Zheng-gui Xiang, Yi-ming Wang
Summary: This study investigates the influence of curing conditions on the mechanical and pore structure characteristics of cementitious tailings backfill (CTB). The results show that as the curing temperature and stress increase, the strength and elastic modulus of CTB increase while the growth rates decrease. The porosity of CTB decreases and there is a good linear correlation between the strength and apparent porosity.
Article
Metallurgy & Metallurgical Engineering
Mahboube Bakhshoude, Esmaeel Darezereshki, Fereshteh Bakhtiari
Summary: The role of chloride ion in the performance of extreme thermophiles bacterium Sulfolobus acidocalarius in bioleaching process of copper sulfide concentrate at Midouk Shahr-e-Babak Complex was investigated. Gradual adaptation of bacteria to chloride ions at pH=1.5 showed that chloride ions in solution reduced the reproduction and growth rate of bacteria but did not prevent their growth. Lowering the pH from 2.0 to 1.5 increased the recovery of copper in the first few days of bioleaching.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2023)
Article
Geochemistry & Geophysics
Nihat Utku Guner, Erol Yilmaz, Muhammet Sari, Tugrul Kasap
Summary: This study aims to improve the strength performance of cementitious paste backfill (CPB) by improving its gradation, while reducing costs and the amount of binder used per unit volume. Experimental investigation showed that adding sand significantly increased the strength of CPB (up to 99%), but the replacement rate of sand was limited to 30% due to its segregation effect. Microstructural tests revealed that the void volume of CPB decreased as the amount of added sand increased. Therefore, it was concluded that calcareous sand made a major contribution to filling strength by improving gradation adjustment and reducing the amount of cement used in CPB manufacturing.
Article
Construction & Building Technology
Huan Zhang, Shuai Cao, Erol Yilmaz
Summary: This study investigates the mechanical properties of microscopic damage and fracture evolution of 3D-printed polymer reinforced CTB. The experimental results show that the failure mode of CTB mainly starts from the low-density pore area, gradually evolves to a crack, and finally expands to the main crack by the center of the specimen. Incorporating 3D-PPL into CTBs decreases the penetrated pore number and enhances the density of CTB's microstructure.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Review
Materials Science, Multidisciplinary
Gaili Xue, Erol Yilmaz, Yongding Wang
Summary: Filling mining technology plays a crucial role in the comprehensive utilization of mining solid waste, environmental protection, and mining safety, providing significant advantages such as green, safe, efficient, and low-carbon emission, which is crucial to achieving the strategy of harmonious coexistence between humans and nature.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2023)
Editorial Material
Materials Science, Multidisciplinary
Shenghua Yin, Chongchong Qi, Erol Yilmaz, Shuai Cao, Qiusong Chen
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2023)
Article
Environmental Sciences
Zhiqiang Huang, Shuai Cao, Erol Yilmaz
Summary: Without appropriate waste management, the storage of tailings and waste rocks can cause devastating damage to ecosystems. This study evaluated the microstructure and strength behavior of cementitious tailings-crushed rock backfill with gold/tungsten tailings and rock contents. The results showed that tungsten tailings based backfills were more sensitive to crushed rock gradation, and the content and gradation of crushed rock significantly affected the failure modes of the backfills. The study's findings provide important guidance for the industrial uses of cementitious tailings-crushed rock backfill.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Baoxu Yan, Hanwen Jia, Zhen Yang, Erol Yilmaz, Honglei Liu
Summary: Based on large-scale similar simulations, this study analyzes the evolution of full-stress/strain and acoustic emission response relevant to the instability and failure of concealed goafs under multiple blasting disturbances in an open-pit iron mine. The results show the formation of a tension-shear dislocation area at the side corner of the goaf after three blasting disturbances. The vertical displacement of the goaf roof exhibits a 'two-stage increase' before roof caving, while the axial stress on the side wall undergoes 'two-stage pressure relief'.
INTERNATIONAL JOURNAL OF MINING RECLAMATION AND ENVIRONMENT
(2023)
Article
Geochemistry & Geophysics
Ziyue Zhao, Shuai Cao, Erol Yilmaz
Summary: This study investigates the strength and bending features of layered-fiber-reinforced cemented tailings backfill (LFR-CTB). The results show that LFR-CTB has higher flexural strength and toughness when proper fiber delamination and cement are used, and accumulated fiber delamination effectively improves the flexural features of CTB. Through the action of fibers and bonding materials, LFR-CTB maintains high post-peak rigidity. The study's key consequence is to provide a technical guideline and reference for industrial applications.