Article
Engineering, Multidisciplinary
Zhongze Lin, Shunran Zhang, Lang Ren, Zhe Shen, Ganpei Tang, Peijian Shi, Tianxiang Zheng, Biao Ding, Yifeng Guo, Yan Chen, Qiang Li, Jianchao Peng, Yunbo Zhong
Summary: This paper presents a new approach to fabricate a three-dimensional graphene-like nanosheets network (3D-GLNN) in a nickel matrix composite. The in-situ construction of a 3D interconnected GLNN structure improves the load transfer capacity and increases the yield strength of the composite. The crack bridging effect induced by the 3D-GLNN blocks crack propagation, leading to significant strengthening and toughening. This study introduces an innovative design idea using a 3D-connected Ni foam as a template to synergistically enhance the strength and strain-hardening capacity of graphene-reinforced metal matrix composites.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Materials Science, Composites
Zhenghe Zhang, Jinze Cui, Honghui Chen, Caizhen Zhu, Jian Xu, Huichao Liu
Summary: A solution-based strategy was proposed to fabricate polyvinyl alcohol (PVA) composite films for optical applications, by self-reinforcing and self-toughening using electrospun PVA nanofibers with various solubilities. The PVA composite films exhibited high light transmittance of above 85% in the wavelength range of 400-800 nm, as well as excellent mechanical properties with a tensile strength of 70 MPa and elongation at break of 160.1%.
COMPOSITES COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Weijun Yang, Yanlin Zhu, Tianxi Liu, Debora Puglia, Jose M. Kenny, Pengwu Xu, Rui Zhang, Piming Ma
Summary: A novel amorphous and transparent polyurethane/nanocellulose elastomer with excellent self-healing, self-reinforcing and toughening performance is obtained by implementing a dual dynamic crosslinking strategy through multiple hydrogen and disulfide bonds. The elastomer can fully self-heal within 4.0 h at 50 degrees C and exhibits significantly increased tensile strength and toughness after multiple hot-pressing. The self-strength and self-toughening effects are attributed to the reconstruction of dual dynamic networks and the presence of multiple hydrogen bonds.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Materials Science, Coatings & Films
Jinyu Zhu, Yawen Yang, Limin Ma, Weihong Jia, Kaiming Hou, Zhangpeng Li, Jinqing Wang, Shengrong Yang
Summary: Large-size and ultra-thin two-dimensional zirconia nanosheets were synthesized and used to construct a composite coating with graphene oxide. This coating showed excellent wear-resistance and friction-reduction properties. Compared to the coating with graphene oxide-zirconia nanoparticles, the 2D-2D interlayer sliding structure of the nanosheets contributed to the lower friction coefficient and longer service life.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Keizo Nakagawa, Misato Kunimatsu, Kengo Yasui, Tomohisa Yoshioka, Takuji Shintani, Tomoki Yasui, Eiji Kamio, Wei-Song Hung, Kueir-Rarn Lee, Shik Chi Edman Tsang, Hideto Matsuyama
Summary: Two-dimensional nanomaterials, specifically the GO/NbN membrane with a dense heterolayer interface, show superior separation performance in nanofiltration due to the locally tuned interfacial layer design. Molecular dynamics simulations indicate a stable interlayer spacing and strong interaction between nanosheet surfaces, contributing to the higher rejection rate. The layered GO/NbN membrane has a fundamentally different structure from previously reported laminar membranes.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Jiheng Ding, Hongran Zhao, Min Zhou, Panlin Liu, Haibin Yu
Summary: The study successfully fabricated a bioinspired graphene-based coating by mimicking the microstructure of nacre, which shows high protectiveness and greatly enhanced anticorrosion performance. Compared to conventional blending methods, this coating has higher compactness and alignment degree, contributing to its superior physical barrier properties.
Article
Materials Science, Multidisciplinary
Xuefeng Yang, Zhengxin Li, Fuming Deng
Summary: The addition of graphene nanosheets can improve the performance of PDC composites, with 0.2 wt% of graphene nanosheets showing the best comprehensive performance, enhancing impact toughness and increasing heat-resistant temperature.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2021)
Article
Energy & Fuels
Yushuai Yao, Yi Yu, Yue Liu, Cheng Du, Yan Zhang, Jian Chen, Hui Ye, Liu Wan, Mingjiang Xie
Summary: This study developed a strategy using potassium citrate mediated evaporation induced self-restacking of graphene oxide (GO) to fabricate porous carbon nanosheets. The resulting nanosheets have a rich microporous structure, moderate oxygen functionalities, and high packing density. The porous carbon nanosheets fabricated with this strategy showed superior supercapacitor performance compared to other carbon materials.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Materials Science, Ceramics
Wuli Su, Jie Zou, Shuai Li, Lan Sun
Summary: Investigation into the mechanical properties of WC-6Co cemented carbides with varying contents of graphene oxide (GO)/nanoalumina (Al2O3) composite particles revealed that the alloy performed best at a content of 0.05 wt%, with a hardness of 2021 HV30, a strength of 2480.4 MPa, and a toughness of 11.5 MPa.m(1/2). The presence of composite particles aided in particle refinement and improved the solid solution strengthening effect in the cobalt phase.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Yu-kun Wei, Le-yang Dai, Hai-chang Zhong, Hai-feng Liao, Xian-bin Hou
Summary: This study successfully synthesized a multilayer graphene-reinforced TiO2 composite nanolubricant additive (MGTC) using dielectric barrier discharge plasma-assisted ball milling. The 1.0wt% composite oil showed good friction reduction and wear resistance.
Article
Engineering, Electrical & Electronic
Subramanian Ravichandran, K. Pushpanathan, Suresh Sagadevan, A. R. Marlinda, Faruq Mohammad, Hamad A. Al-Lohedan, Mohd Rafie Johan
Summary: This study reported the influence of graphene concentration on the vibrational properties of PVA-graphene composites formed at room temperature. Physicochemical characterization and analysis were carried out using various techniques, revealing that the increased concentration of graphene caused changes in the PVA polymer structure and associated deviations in various parameters.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Subin Lee, Hadi Ghaffarian, Wonsik Kim, Taegu Lee, Seung Min Han, Seunghwa Ryu, Sang Ho Oh
Summary: Graphene interfaces confine dislocation plasticity within individual Cu grains, leading to localized deformation and crack nucleation. Additionally, these interfaces effectively block crack propagation, enhancing the mechanical properties of metal-graphene nanolayered composites.
Article
Chemistry, Multidisciplinary
Barbara S. Rodrigues, Marcos R. S. Vicente, Juliana S. Souza
Summary: The effects of microwave-assisted synthesis on the morphology and crystalline structure of WO3-graphene oxide (GO) composites have been studied. The results show that both thermal and non-thermal effects significantly influence the properties of the synthesized materials. The microwave reactor used affects the delivery of microwaves to the reactional cavity and the growth process of WO3 particles, thereby affecting the crystalline structure and morphology.
Article
Engineering, Multidisciplinary
Xuezheng Zhang, Tijun Chen, Siming Ma, He Qin, Jinyuan Ma
Summary: By in situ synthesizing novel reinforcing particulates with a special core-shell structure, the study successfully overcomes the trade-off between strength and ductility in traditional metal matrix composites, achieving unprecedented tensile elongation and high ultimate tensile strength in A356 Al alloy based PRMMC.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Engineering, Environmental
Xin Hao, Shuyi Yang, E. Tao, You Li
Summary: This study focused on functionalizing aerogel to selectively remove Cu(II) ions from complex wastewater systems using differences in coordination configurations of alkaline earth metal ions and sodium alginate. The Sr-graphene oxide/montmorillonite aerogel showed promising results in terms of efficient removal and regeneration performance, making it a cost-effective and ecofriendly option for selective removal of Cu(II) ions.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Construction & Building Technology
Diego J. De Souza, Leandro F. M. Sanchez, Juarez Hoppe Filho, Marcelo H. F. Medeiros
Summary: This paper evaluates the physical and chemical properties of mortar mixtures with different binders and exposed to different sulphate solutions. A theoretical approach to describe the susceptibility of cementitious mixtures against sulphate attack is proposed. The results show that the amount of portlandite and the potential of ettringite formation are well correlated with the expansion and damage caused by sulphate attack.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Construction & Building Technology
Yu Chen, Hossein Rahmani, Erik Schlangen, Og uzhan Copurog
Summary: This study presents a method to accelerate the production of limestone-calcined clay-based cementitious materials using Ca(NO3)2 solution in 3D printing, and investigates the effects of adding Ca(NO3)2 solution on the material's properties. The results show that adding Ca(NO3)2 solution can improve buildability, accelerate initial setting, and increase compressive strength.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Construction & Building Technology
Jing Xu, Xianzhi Wang, Wu Yao, Qing Chen, Hehua Zhu, Surendra P. Shah
Summary: Concrete cracks in marine engineering are caused by the hostile seawater environment, leading to serious deterioration of infrastructures. Microbial induced carbonate precipitation (MICP) is an effective and environmentally friendly approach for self-healing of concrete cracks. However, the formation and structure of MICP products for crack healing in seawater are still unclear, which hinders the application of MICP in marine structures.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Construction & Building Technology
Zhenbo Wang, Peng Sun, Yurun Fan, Yudong Han, Yudong Hu
Summary: This study investigates the potential use of engineered cementitious composites (ECCs) with strain-hardening and self-healing characteristics as a cover material in wet coral sand exposure. The results show that ECCs can effectively close cracks, reduce water permeability, and restore the load-carrying capacity of structures. Additionally, lower strain levels are associated with decreased rebar corrosion.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Construction & Building Technology
Zhengxian Yang, Xiaoli Xiong, Kang Li, Bruno Briseghella, Giuseppe Carlo Marano, Shanghong Chen
Summary: This study investigates the long-term volume stability and strength development of engineered cementitious composites (ECC) containing high-volume steel slag (SS). It is found that the strength of ECC with SS starts to decline after 90 days, while the decline is more significant compared to the matrix. The expansion of SS reduces the fracture toughness of the matrix, leading to an increase in toughness and ductility of the ECC. The introduction of ground granulated blast furnace slag (GGBFS) and PVA fibers can reduce the volume expansion and strength loss caused by SS expansion.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Construction & Building Technology
Bin Xi, Zhewen Huang, Salam Al-Obaidi, Liberato Ferrara
Summary: This study investigates the self-healing capabilities of Ultra-High Performance Concrete (UHPC) under the combined influence of mechanical and environmental factors. The results reveal that UHPC with narrow cracks exhibits a higher degree of self-healing, especially when exposed to tap water. Furthermore, prolonged exposure mitigates the inhibitory effect of aggressive ions on self-healing.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Construction & Building Technology
Zhichao Xu, Huayang Sun, Yanlin Huo, Minjie Jia, Zhitao Chen, Yingzi Yang
Summary: In this study, MXene was used to modify the surface of polyethylene fiber, improving the interfacial properties and tensile properties of strain hardening cementitious composites. The MXene-coated fiber showed increased tensile stress and strain, reduced crack width and spacing, and enhanced frictional bond strength between the fiber and matrix.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Construction & Building Technology
Bao Lu, Yeqiang Zhou, Lei Jiang, Zhensen Liu, Guihua Hou
Summary: This study investigated the leaching rate of Ca2+ from magnesium slag (MS) and developed a leaching-carbonation method to convert MS into high-purity vaterite and supplementary cementitious materials. The wet carbonation process with glycine as a crystal modifier successfully produced spherical vaterite with high purity and surface area. The leachate solid residue (LSR) obtained from the leaching process of MS showed a smaller size destruction and higher surface area compared to Portland cement, leading to accelerated hydration process and improved compressive strength and pore structure development. This work provides a novel treatment method for MS and enables its high value-added utilization.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Construction & Building Technology
Gustavo Henrique Nalon, Jose Carlos Lopes Ribeiro, Leonardo Goncalves Pedroti, Roberto Marcio da Silva, Eduardo Nery Duarte de Araujo, Gustavo Emilio Soares de Lima
Summary: The mechanical behavior of mortar joints is crucial for masonry's structural performance. This study investigated the effects of different lime/cement ratios and carbon black nanoparticles content on the properties of mortars. The results showed that increasing lime content decreased mortar strength but increased self-sensing properties at the end of the percolation zone.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Construction & Building Technology
Yifei Wang, Lei Lei, Caijun Shi
Summary: The effects of DEIPA and EDIPA at dosages of 0.02% and 0.05% on the hydration and strength development of cement-fly ash-limestone ternary blend were investigated. It was found that both dosages of DEIPA and EDIPA promote the chemical effect of limestone and the hydration of aluminates from cement and fly ash. The hydration of silicates was accelerated by 0.02% of DEIPA or EDIPA but delayed by 0.05% due to excessive aluminates hydration. DEIPA and EDIPA also refine the pore structure and increase compressive strength of the blend mortar.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Construction & Building Technology
Du Pan, Ditao Niu, Zongjin Li
Summary: A thick-walled cylinder model was developed in this study to analyze the cracking behavior of seawater sea-sand concrete (SSC) cover. Damage variables were introduced to determine the extent of damage for each cracked ring, and a predictive model for the cracking time of SSC cover was established. The accuracy of the model was verified using the Digital Image Correlation (DIC) technique.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Construction & Building Technology
Jiangyu Wu, Hong S. Wong, Hao Zhang, Qian Yin, Hongwen Jing, Dan Ma
Summary: This study explores a method of strengthening cemented rockfill by using well-graded gangue and partially replacing Portland cement with fly ash and a premixed low-alkalinity activator. The research investigated the effects of activator dosage and curing time on the mechanical properties, composition, and microstructure of cemented rockfill. Results show improved performance with low cement content and the use of a low-cost activator. The addition of premixed activator to fly ash enhanced the formation of specific minerals and caused densification of the microstructure. The study reveals an effective and low-cost method for recycling mining wastes and reducing cement.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Construction & Building Technology
Juntao Dang, Xiaosong Tang, Jianzhuang Xiao, Aihong Han
Summary: This study proposes a solution to improve the fresh stability and thermal insulation of alkali-activated foamed concrete by adding recycled brick powder. The study investigates the effects of activator modulus and Na2O concentration on the properties of alkali-activated foamed concrete with different bases. The presence of alkaline activator negatively affects the foamability and foam stability, but adjusting the activator concentration can achieve shorter initial setting time and higher fluidity loss. In addition, the increased activator concentration resulted in changes in the pore structure of the foamed concrete.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Construction & Building Technology
Jiandong Zuo, Bo Wu, Biqin Dong, Feng Xing, Jun Ma, Guanqi Wei
Summary: Nitrite ion intercalated Ca-Al and Mg-Al layered double hydroxides (LDHs) were successfully synthesized using two modified methods. The Ca-Al LDH synthesized by hydrothermal method (H-C-LDH) exhibited the best properties. The intercalated LDHs improved the mechanical properties, chloride penetration resistance, and permeability resistance of cement mortars without affecting the fluidity. Additionally, the intercalated LDHs provided better corrosion resistance.
CEMENT & CONCRETE COMPOSITES
(2024)
Review
Construction & Building Technology
Jingbin Yang, Zhenping Sun, Nele De Belie, Didier Snoeck
Summary: This review paper provides an overview of internal curing mechanism, common internal curing agents, and the most promising agent-superabsorbent polymers in alkali-activated materials (AAM) systems. The introduction of voids by internal curing agents typically has a negative impact on mechanical properties, but continuous water release during internal curing counteracts this effect by promoting hydration. While the effect of internal curing in reducing autogenous shrinkage of AAM systems has been well-established, the impact on drying shrinkage varies widely in different studies.
CEMENT & CONCRETE COMPOSITES
(2024)