Article
Polymer Science
Basheer A. Alshammari, Asma M. Alenad, Fahad S. Al-Mubaddel, Abdullah G. Alharbi, Abdulaziz Salem Al-shehri, Hanan A. Albalwi, Fehaid M. Alsuabie, Hassan Fouad, Abdel-Hamid I. Mourad
Summary: The main objective of this study is to develop hybrid high-density polyethylene (HDPE) micro- and nanocomposites and investigate their thermal, mechanical, and morphological characteristics based on the number and content of fillers. The research findings reveal that the types, sizes, quantities, and dispersion states of fillers have a significant influence on the mechanical properties of the prepared composites.
Article
Polymer Science
Saul Sanchez-Valdes
Summary: The use of HDPE-g-DMAE as a compatibilizer in HDPE/rHDPE/nanoclay composites improves mechanical properties, enhances adhesion between recycled and virgin polymer phases in the blend, and increases interactions between the compatibilizer and hydroxyl groups on the clay surface as well as oxidized groups in the recycled polymer.
IRANIAN POLYMER JOURNAL
(2021)
Article
Biochemistry & Molecular Biology
Marta Fiedot-Tobola, Anna Dmochowska, Roman Jedrzejewski, Wojciech Stawinski, Bartlomiej Kryszak, Joanna Cybinska
Summary: Nanocomposites of HDPE and zinc oxide nanoparticles were successfully produced with improved thermal stability and mechanical properties through a green preparation method. The presence of pectin-organophilized filler significantly influenced the crystallization and degradation processes of HDPE, leading to enhanced fire properties as confirmed by thermogravimetric analysis. The interactions between HDPE, pectin, and ZnO were found to be crucial for the structural and performance properties of the composites, with the biopolymer reacting with ZnO via ionic interaction and hydrogen bonding.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Chemistry, Physical
Jiaxing Liang, Kefeng Xiao, Ruopian Fang, Aditya Rawal, Alison Lennon, Da-Wei Wang
Summary: By adding nanofluidic additives, unimpeded ion transport can be achieved in nanoparticle electrodes, maintaining high density of the electrodes while improving volumetric capacity of the batteries. The use of nanofluidic-enhanced dense electrodes can enhance the performance of lithium-ion batteries, and this approach can be extended to various electroactive nanoparticles in battery design.
ENERGY STORAGE MATERIALS
(2021)
Article
Polymer Science
Nga Thi-Hong Pham
Summary: The study investigated the mechanical properties of LDPE/EVA blends with different EVA-28 content. Results showed that the tensile and flexural strength decreased with increasing EVA-28 content, while hardness decreased. However, adding EVA-28 improved the elongation at break, with the highest value achieved in the blend containing 10% EVA-28.
Article
Materials Science, Composites
C. Balaji Ayyanar, M. Dhivyya Dharshinii, K. Marimuthu, S. Akhil, T. Mugilan, C. Bharathiraj, Sanjay Mavinkere Rangappa, Anish Khan, Suchart Siengchin
Summary: This study incorporated lignocellulosic coconut coir fillers into the HDPE matrix for domestic cloth clip product development. The results showed positive effects of CC fillers on the HDPE matrix, with a maximum of 20% CC filler incorporation. A partially eco-friendly composite with 20% CC filler was selected for cloth clip product development.
POLYMER COMPOSITES
(2022)
Article
Polymer Science
Joao Paulo Berenguer, Arielle Berman, Tyler Quill, Tony Zhou, Kyriaki Kalaitzidou, Baratunde Cola, Thomas Bougher, Matthew Smith
Summary: This study introduces a lightweight electrically insulating composite material with high thermal conductivity, achieved by mixing ultra-high molecular weight polyethylene flakes into a matrix of low-density polyethylene or ethylene vinyl acetate. The research reveals that the thermal conductivity of the polyethylene flakes significantly decreases when compounded at temperatures of 115 degrees C and above, due to melting and reduced polymer chain alignment.
Article
Materials Science, Characterization & Testing
W. V. W. H. Wickramaarachchi, S. Walpalage, S. M. Egodage
Summary: Blending of polymers is cost-effective compared to synthesising new materials. The study investigated the use of six particulate fillers in NR/HDPE TPE blends for roofing applications, with BaSO4 at 30 phr showing the best overall performance among the fillers tested for impact strength.
POLYMERS & POLYMER COMPOSITES
(2021)
Article
Chemistry, Multidisciplinary
Sabrina S. Scott, Brahmjot Kaur, Cameron H. M. Zheng, Patrick Brant, Damon J. Gilmour, Laurel L. Schafer
Summary: Early transition metal-catalyzed hydroamino-alkylation is an efficient method to add amines to polybutadienes, offering access to amine-functionalized polyolefins. Tantalum catalyst can be used to functionalize different ratios of 1,2-polybutadiene polymers, and the degree of amination can be controlled by modifying amine and catalyst loading.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Review
Polymer Science
Damayanti Damayanti, Desi Riana Saputri, David Septian Sumanto Marpaung, Fauzi Yusupandi, Andri Sanjaya, Yusril Mahendra Simbolon, Wulan Asmarani, Maria Ulfa, Ho-Shing Wu
Summary: The excessive production of global plastic and poor waste management have raised concerns about environmental sustainability. Plastic recycling has become a practical approach for reducing plastic waste and maintaining sustainability. Chemical and mechanical recycling are common methods with advantages of simplicity, low cost, environmental friendliness, and potential profitability. However, the variation in physical and chemical properties of plastic waste poses a challenge for separation. Thus, reliable and effective plastic waste separation technology is crucial for increasing the value and recycling rate of plastic waste.
Article
Polymer Science
Xinzhi Cai, Yuqiao Liu, Tiantian Yang, Xuanzuo Dong, Xinru Zhang, Zeyi Jiang, Aihui Chou, Ting Gao, Xinxin Zhang
Summary: Incorporating hybrid fillers into polymer has been proven to be an effective way to obtain composites with high thermal conductivities. By studying the optimal ratios of different types of boron nitride nanosheets, researchers were able to achieve composites with significantly higher thermal conductivities compared to pure PTFE.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Construction & Building Technology
Zhe Hong, Kezhen Yan, Min Wang, Lingyun You, Dongdong Ge
Summary: The research aims to determine the optimal preparation process of LDPE/EVA modified asphalt and investigate the effect of LDPE and EVA on the high-temperature rheological properties of asphalt. The test results showed that LDPE and EVA compound modified asphalt performed well in improving high-temperature performance, resisting permanent deformation, and increasing the anti-temperature variety properties.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Polymer Science
Samira Maou, Yazid Meftah, Yves Grohens, Antoine Kervoelen, Anthony Magueresse
Summary: To demonstrate the upcycling of thermoplastic waste, HDPE and PVC are mixed as the matrix using MAH reinforced with unmodified and modified DPFs. The effects of in situ grafting of MAH onto the DPFs-HDPE-PVC composites are investigated and analyzed. The thermal, mechanical, and water uptake properties of the composites are improved, and the G-Hydro composite exhibits the best performance.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Multidisciplinary Sciences
Zheng Li, Lu An, Saurabh Khuje, Jingye Tan, Yong Hu, Yulong Huang, Donald Petit, Danial Faghihi, Jian Yu, Shenqiang Ren
Summary: Polymer dielectrics used in electrical power systems must possess specific structures such as gel-sheared polyethylene in order to achieve the desired thermal conductivity.
Article
Green & Sustainable Science & Technology
Jie Liu, Zezhen Pan, Ke Sun, Yalan Chen, Yan Yang, Bo Gao, Baoshan Xing
Summary: This study investigated the effects of soil minerals and microplastics on the stability of biochar. The results showed that minerals provide protection to biochar, preventing its degradation and CO2 emissions. Microplastics, on the other hand, can increase the degradation and CO2 emissions of biochar. These findings are important for the establishment of biochar carbon sequestration policies.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
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
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.
Article
Materials Science, Multidisciplinary
Jiajian Li, Shuai Cao, Erol Yilmaz
Summary: This study investigates the impact of composite fibers on the microstructure of FRCTBs, revealing that the addition of fibers can increase the percentage of weak surface, reduce the porosity of FRCTB, and limit crack expansion.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Aiai Wang, Shuai Cao, Erol Yilmaz
Summary: This study analyzes the influence of different nanocellulose contents, types, and intermediate microstructure on the strength and fracture features of cementitious tailings backfill. The results show that optimizing nanocellulose content can improve the pore structure of the backfill and help suppress cracking. The study also proposes a dual nanocellulose-pore network model to explain the microscopic enhancement mechanism.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Correction
Materials Science, Multidisciplinary
Ufuk Gokhan Akkaya, Kenan Cinku, Erol Yilmaz
FRONTIERS IN MATERIALS
(2023)
Article
Construction & Building Technology
Qi Jiang, Wei Liu, Shaopeng Wu, Xuanwen Gou
Summary: This study analyzes the erosion mechanisms of NaCl solution on asphalt concrete and finds that NaCl solution softens asphalt and promotes the intrusion of crystalline salt into it. Salt crystallization alters the surface roughness of aggregates, resulting in a decrease in skid resistance but an improvement in compressive strength. Additionally, the concentration of NaCl solution initially has no significant impact on the mechanical performance of asphalt concrete, but its domination gradually increases with the intensification of cyclic effects.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Lili Kan, Lan-qing Dai, Ning Kong, Bin Peng, Fei Wang
Summary: This paper investigates the effect of freezing and thawing cycles on the tensile behavior of cracked ultra-high performance concrete (UHPC). The results show that long-term freezing and thawing action deteriorates the cracking strength, tensile strength, tensile strain, and strain energy of cracked UHPC. On the other hand, the action of water generally favors the development of tensile properties of UHPC. The crack distribution tends to be unsaturated under freezing and thawing environment, and the re-hydration reaction is hindered. The pore structure near the crack varies under different environments.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Xin Xiao, Jingwei Li, Qingke Meng, Xiangshan Hou, Yanhui Liu, Xujiang Wang, Wenlong Wang, Shengtao Lu, Yuzhong Li, Yanpeng Mao, Tong Li
Summary: Preparing gypsum-based self-leveling mortar (GSLM) using beta-hemihydrate gypsum and solid wastes-derived sulfoaluminate cement (WSAC) can improve the mechanical performance of the mortar, but phosphorus impurities can weaken the hydration speed and degree.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Sihang Bao, Junzhen Di, Yanrong Dong, Ziqing Gao, Qing Gu, Yuanfang Zhao, Hongyu Zhai
Summary: Tailings dam break and leakage accidents pose a threat to the safety of people in mining areas and cause severe environmental pollution. This study focuses on solidifying tailing sand using microbial induced calcite precipitation (MICP) to improve strength and fix heavy metals. The curing time of MICP bio-cemented tailings is found to significantly impact the strength of tailings, while its effect on heavy metal fixation is minimal. The optimized MICP curing time is 10 days, resulting in improved strength and cementation of tailings particles.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Ferhat Benmahiddine, Fares Bennai, Achraf Charaka, Ameur El Amine Hamami, Abdelkader Tahakourt, Rafik Belarbi
Summary: This paper studied the effects of hysteresis on the hygrothermal behavior at the building scale. Through laboratory validation and numerical simulations, it was found that hysteresis has a significant impact on the relative humidity and total heat fluxes in buildings, while it does not have a noticeable effect on temperature variations.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
You Gao, Wei He, Xiayang Zhang, De'an Sun, Pei Li
Summary: This study determined the boundary line between the swelling and compression deformation zone in lateritic clay through wetting tests, and proposed a simple bimodal SWRC model. It also found that the existing strength model underestimated the tested values in the medium to high suction range, therefore a segmented strength equation was introduced for enhanced predictions of the strength properties of lateritic clay.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Prabhath Ranjan Kumar Soda, Asheer Mogal, Kalyan Chakravarthy, Nikhil Thota, Nimish Bandaru, Sanjay Kumar Shukla, K. M. Mini
Summary: This study investigates the use of encapsulated bacteria to improve the self-healing ability of concrete. Through various tests, it is found that using 20% cement-coated alginate beads (CCAB) and 5% nanosilica (NS) can achieve optimal strength and healing. This research is significant for enhancing the durability of concrete.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Shizhe Wang, Haiping Wu, Wen Yang, Wei Wang, Zhibo Zhu, Kun Nie, Luoxin Wang, Hua Wang, Jing Wu
Summary: In this study, photothermal-heat storage concrete (PHSC) was developed with excellent photothermal conversion performance and heat storage capacity. By absorbing and storing solar energy during the day and releasing it at night, PHSC can effectively reduce energy consumption in buildings.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Robin Deb, Jialuo He, Geetika Mishra, Yaghoob (Amir) Farnam
Summary: Incorporation techniques of phase change materials in cementitious composites have a significant influence on thermal properties. This study investigated the thermal behavior of low-temperature PCM when subjected to varying temperature change rates and pore confinement inside the porous network of lightweight aggregates. The results showed that ramp rates affect the nucleation and crystallization growth process during the phase transition, and the pore structure of the aggregates affects the supercooling phenomenon and confinement pressure of the PCM.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Eduardo Ferreira, Payam Sotoudeh, Dagmar Svecova
Summary: This study investigates the fatigue behavior of concrete under different stress reversal conditions. The results indicate that stress reversal generally causes more severe damage and reduces the cycles to failure compared to tensile fatigue. Additionally, adding some level of compression contributes to the energy required for failure under stress reversal fatigue. Specimens with higher concentration of fractured aggregates achieve longer fatigue lives.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Mag Raj Gehlot, Sandeep Shrivastava
Summary: This study evaluates the compatibility relationship between plaster bonds and the substrate under an accelerated aging environment, and finds that incorporating an appropriate amount of granite cutting waste can improve the strength parameters and adhesion of the cement mortar.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Min Zhang, Qirui Luo, Mingke Deng, Shixing Zhao
Summary: This study investigated the bond behavior between carbon FRCM composites with added short fibers and concrete substrates. The effects of different factors were considered and 36 specimens were tested and discussed. The experimental results were analyzed in terms of failure mode, load-slip curve, and characteristic parameters, and the contribution of weft yarns was taken into account in the developed bondslip model.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Dengkai Liu, Hongniao Chen, Ray Kai Leung Su
Summary: The susceptibility of building stones to fire and high temperature was investigated in this study by examining their physical and mechanical properties. The results show that both compressive and tensile properties of stones are affected by temperature changes. The tensile strength is particularly sensitive to temperature changes, requiring special attention to the components subjected to tensile stress in stone buildings. Principal component analysis was used to predict the mechanical properties of stones, providing a new method for calculating the residual mechanical properties after high temperature or fire.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Joso Maria Raposo, Eduardo Cavaco, Luis Costa Neves, Eduardo Julio
Summary: This paper investigates the correlation between the friction coefficient and the surface roughness of concrete-to-concrete interfaces. Experimental tests were performed on specimens with different surface treatments, and the surface roughness parameters were analyzed and correlated with the shear strength and friction coefficient. The results showed that certain roughness parameters had a strong positive correlation with the friction coefficient, while others had little or no correlation. A novel combined roughness parameter with optimized correlation was proposed.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Chiara Riccardi, Massimo Losa
Summary: The interest in using bio materials in asphalt pavements is growing due to economic reasons and environmental benefits. This study aimed to review the use of bio extenders as additives in binders, with a focus on replacements greater than 20% of fossil binder. The properties of bio-extended binders were found to vary substantially depending on the biomass source and production process.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
