Results 31 to 40 of about 3,740 (263)

Carbonation and Electrochemical Corrosion Resistance of Mild Steel Rebar in Concrete Modified by Sodium Polyacrylate as Super Absorbent Polymer exposed to 3.5 wt% NaCl Solution

International Journal of Electrochemical Science, 2021
In this research, Portland cement (PC) was replaced by sodium polyacrylate (SP) admixture as a super absorbent polymer to consider the carbonation and electrochemical corrosion resistance of mild steel rebar in 3.5wt% NaCl solution.
Yang Jiang, Wenhu Gu
doaj   +1 more source

Impact of MgO Additions on the Oxidation Resistance and Compression Behavior of Vanadium Alloys

Advanced Engineering Materials, EarlyView.
An increase in oxidation resistance at 600 °C is achieved for alloys containing more than 2.5 wt.% MgO. It has been established that, along with V2O5, MgO6V2, and Mg2O7V2 are formed, which are presumed to enhance oxidative stability. Furthermore, the possible transformation of Mg‐vanadates through reaction with CO2, which presumably occurs in this ...
Ievgen Solodkyi, Mathias Galetz, Georg Hasemann, Fabian Lanoy, Emma White, Manja Krüger   +5 more
wiley   +1 more source

Influence of carbonation curing on chloride penetration resistance and pore structure refinement in belite-rich cement mortar

Developments in the Built Environment
Concrete is a porous material, and chloride penetration is strongly influenced by its pore structure. Carbonation curing has attracted attention as an innovative curing technique that enhances microstructural densification and CO2 uptake in cement-based ...
Seojin Kim, Hyeong-Ki Kim, Jeong Gook Jang   +2 more
doaj   +1 more source

Temperature dependence of carbon nanofiber resistance

Nanotechnology, 2010
Transport properties under current stress are examined for a carbon nanofiber (CNF) on an insulating substrate between tungsten-deposited gold electrodes. The temperature dependence of CNF resistance is determined based on our previously reported heat transport model. The measured devices exhibit a thermal activation behavior, suggesting transport in a
Yamada, Toshishige, Yabutani, Hisashi, Saito, Tsutomu, Yang, Cary Y.   +3 more
openaire   +3 more sources

Enhancing Low‐Temperature Performance of Sodium‐Ion Batteries via Anion‐Solvent Interactions

Advanced Functional Materials, EarlyView.
DOL is introduced into electrolytes as a co‐solvent, increasing slat solubility, ion conductivity, and the de‐solvent process, and forming an anion‐rich solvent shell due to its high interaction with anion. With the above virtues, the batteries using this electrolyte exhibit excellent cycling stability at low temperatures. Abstract Sodium‐ion batteries
Cheng Zheng, Qian Yao, Yanan Sun, Hongyu Lv, Zhongchao Bai, Guoliang Zhang, Nana Wang, Jian Yang   +7 more
wiley   +1 more source

Polarizable Vanadium Dipoles Promote Water Dissociation on Vanadium‐Based Metal Organic Framework

Advanced Functional Materials, EarlyView.
The polarization of unpaired V 3d electrons weakens the H─O bond to improve water dissociation by the dual Vδ+:O─H and Pλ−:H─O coupling hydrogen bonds formation and relaxation. P@V‐MOF electrocatalyst shows low overpotentials (94 mV in acid, 178 mV in neutral, and 77 mV in alkaline solutions) with excellent stability for effective overall water ...
Xinjuan Liu, Jun Xu, Minmin Fan, Jingcheng Xu, Mengyuan Li, Yun Gong, Weiwei Yang, Lei Li, Yong Zhou, Deqiang Zhao, Yuhua Xue, Xingtao Xu, Chang Q. Sun, Liming Dai   +13 more
wiley   +1 more source

Research on the carbonation resistance and improvement technology of fully recycled aggregate concrete

Science and Engineering of Composite Materials
The aim of this study is to enhance the carbonation resistance of fully recycled aggregate concrete through diverse measures in an effort to enhance solid waste disposal, reduce the consumption of natural aggregates, and broaden the utilization of ...
Wang Shifang, Wang Yongsheng, Yuan Ji, Wang Ruixin, Feng Jun Wei, Lin Wei, He Haijie, Dai Xiongwei, Xu Wen, Zhang Zhicheng   +9 more
doaj   +1 more source

Carbonization test and orthogonal polynomial regression analysis of steel fiber reclaimed concrete

Heliyon
To enhance the carbonation resistance of reclaimed concrete, several key factors affecting its performance were investigated. An orthogonal array L16(4³ × 2⁶) was employed to design the carbonation tests for steel fiber (SF) reinforced concrete.
Yahong Ding, Zhongcai Lin, Chunling Yan, Biaowei Sang, Longbo Yang   +4 more
doaj   +1 more source

Electrospun Wood‐Derived Biopolymers as Electrodes in Electrochemical Energy Storage Technologies

Advanced Functional Materials, EarlyView.
Electrospinning transforms wood‐derived cellulose and lignin into architecturally defined, binder‐free carbon electrodes with tuneable porosity and functionality. This review shows how fibre design enables decoupled charge and mass transport, enhancing performance across battery systems, while identifying key challenges in spinnability, scalability ...
Michael W. Thielke, Hattie R. Chisnall, Jesus Vazquez Chavez, Ana B. Jorge Sobrido   +3 more
wiley   +1 more source

Effects of Carbonation on the Impact Resistance of Old Concrete

Chemical Engineering Transactions, 2018
By simulating old concrete through artificial accelerated carbonation, this paper performs the SHPB dynamic impact test and studies the impact resistance of old concrete after carbonation.
Dun Yu
doaj   +1 more source