Results 31 to 40 of about 19,744 (308)

Effects of CaO-based expansive agent on carbonation resistance of marine concrete

Case Studies in Construction Materials
Marine concrete contains a high volume of supplementary cementitious materials, which benefits low-carbon concrete production. However, they may also increase the risk of cracking and accelerate the carbonation due to the pozzolanic reaction ...
Jian Zhang, Tengfei Hua, Yuefeng Ma, Yufei Liu, Jinhui Liu, Jin Zhu, Xiangsheng Chen   +6 more
doaj   +1 more source

Carbonation Model and Prediction of Polyvinyl Alcohol Fiber Concrete with Fiber Length and Content Effects

International Journal of Concrete Structures and Materials, 2022
Durability is an important aspect of reliability of concrete structures. In order to establish the carbonation model of polyvinyl alcohol (PVA) fiber concrete including the influences of PVA fiber length and volume content, a series of accelerated ...
Zuyun Luo, Xinhua Yang, Heli Ji, Chuanchuan Zhang   +3 more
doaj   +1 more source

Research on Influences of Ultrasonic Vibration Agitation Stirring on Carbonation Resistance of Cement-Based Materials after Absorption of CO₂

Applied Sciences, 2023
To disclose influences of ultrasonic vibration agitation on the carbonation resistance of cement-based materials after absorption of CO2, the variation laws in internal carbonization zone were explored by the testing carbonization depth and carbonization
Lili Liu, Yongsheng Ji, Furong Gao, Zhishan Xu   +3 more
doaj   +1 more source

The synergistic effect of silica fume and γ-C2S on the carbonation resistance of supersulfated cement

Developments in the Built Environment
The poor carbonation resistance of supersulfated cement (SSC) is one of the key bottlenecks limiting its engineering applications. This paper investigates the synergistic effect of γ-C2S and silica fume (SF) on improving the carbonation resistance of SSC.
Yuanxian Gong, Zhongxu Song, Binbin Liu, Guilong Sun, Guanglong Sun, Heng Chen   +5 more
doaj   +1 more source

Disc Granulation Process of Carbonation Lime Mud as a Method of Post-Production Waste Management

Energies, 2020
Carbonation lime mud is a by-product formed during the production of sugar in the process of raw beetroot juice purification. On average, during one campaign, over 12,000 tons of carbonation lime mud is obtained in the operation of one sugar production ...
Katarzyna Ławińska, Szymon Szufa, Andrzej Obraniak, Tomasz Olejnik, Robert Siuda, Jerzy Kwiatek, Dominika Ogrodowczyk   +6 more
doaj   +1 more source

Proposal for classification of concrete quality based on accelerated carbonation tests

Case Studies in Construction Materials, 2023
Reinforcement corrosion is a problem affecting the durability of most concrete structures. When concrete is employed without proper care, it may function inadequately as a barrier, allowing aggressive ions or acidic substances in the atmosphere to attack
Daniel V. Ribeiro, Nilson S. Amorim Júnior, Bruna S. Santos, Henrique A. Santana, Silas A. Pinto   +4 more
doaj   +1 more source

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

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

Carbon-Based Resistive Memories [PDF]

2016 IEEE 8th International Memory Workshop (IMW), 2016
Carbon-based nonvolatile resistive memories are an emerging technology. Switching endurance remains a challenge in carbon memories based on tetrahedral amorphous carbon (ta-C). One way to counter this is by oxygenation to increase the repeatability of reversible switching. Here, we overview the current status of carbon memories.
Koelmans, WW, Bachmann, T, Zipoli, F, Ott, AK, Dou, C, Ferrari, AC, Cojocaru-Miredin, O, Zhang, S, Scheu, C, Wuttig, M, Nagareddy, VK, Craciun, MF, Alexeev, AM, Wright, CD, Jonnalagadda, VP, Curioni, A, Sebastian, A, Eleftheriou, E   +17 more
openaire   +1 more source

Study on the carbonation resistance of sulphoaluminate cement grouting materials enhanced by acrylamide in-situ polymerization modification

Developments in the Built Environment
Sulphoaluminate cement (SAC) is widely used in grouting applications owing to its rapid setting and high early strength. However, its low resistance to carbonation in highCO2 environments restricts its broader application.
Guangling Shi, Hucheng Chai, Liya Zhao, Songhui Liu, Zhiying Guo, Haibo Zhang   +5 more
doaj   +1 more source