Results 11 to 20 of about 2,453 (263)

Critical Carbonation Depth for Initiation of Steel corrosion in Fully Carbonated Concrete and Development of Electrochemical Carbonation Induced Corrosion Model

open access: yesInternational Journal of Electrochemical Science, 2009
It is well known that carbonation of concrete initiates corrosion of reinforcing steel by lowering the pH value, but the extent and variety of possible damage has limited research data and there exists a difference of opinion between various researchers ...
Raja Rizwan Hussain, Tetsuya Ishida
doaj   +1 more source

Carbon-Based Fiber Materials as Implantable Depth Neural Electrodes [PDF]

open access: yesFrontiers in Neuroscience, 2021
Implantable brain electrophysiology electrodes are valuable tools in both fundamental and applied neuroscience due to their ability to record neural activity with high spatiotemporal resolution from shallow and deep brain regions. Their use has been hindered, however, by the challenges in achieving chronically stable operations.
Xuefeng Fu   +24 more
openaire   +3 more sources

Evaluation of Concrete Carbonation Based on a Fiber Bragg Grating Sensor

open access: yesMicromachines, 2023
The carbonation of concrete greatly affects its service life. In this paper, fiber Bragg grating (FBG) sensors were used to investigate the relationship between concrete carbonation and its mechanical properties.
Jianzhi Li, Haiqun Yang, Handong Wu
doaj   +1 more source

Investigation of the Deterioration of Medium-Rise-Wall Type Reinforced Concrete Buildings with External Insulation in Snowy Cold Districts

open access: yesBuildings, 2022
We have clarified that external insulation reduces the probability of reinforcement corrosion in reinforced concrete buildings in cold snowy districts by 45–78%.
Yusuke Adachi   +5 more
doaj   +1 more source

Bioenergetic control of soil carbon dynamics across depth

open access: yesNature Communications, 2022
Abstract Soil carbon dynamics is strongly controlled by depth globally, with increasingly slow dynamics found at depth. The mechanistic basis remains however controversial, limiting our ability to predict carbon cycle-climate feedbacks. Combining radiocarbon and thermal analyses of soil carbon with long-term incubations in absence/presence of ...
Ludovic Henneron   +9 more
openaire   +7 more sources

The role of relative humidity and cement type on carbonation resistance of concrete

open access: yesAlexandria Engineering Journal, 2019
Carbonation of concrete is one of the key factors causing deterioration for reinforced concrete structures. Carbonation depth is typically used to estimate the concrete service life.
Mona Elsalamawy   +2 more
doaj   +1 more source

Research on Carbonation Characteristics and Frost Resistance of Iron Tailings Powder Concrete under Low-Cement Clinker System

open access: yesAdvances in Materials Science and Engineering, 2020
The accelerated carbonation, natural carbonation, fast freeze-thaw test, and pore structure analysis of C30 and C50 concrete with different proportions of iron tailings powder and slag powder were tested, respectively.
Ruidong Wu   +4 more
doaj   +1 more source

Preliminary study of the effect of carbonation curing on geopolymers

open access: yesRevista IBRACON de Estruturas e Materiais, 2023
Carbonation curing differs from weathering carbonation since it is performed intentionally at the early ages of cement hydration. This cure involves applying different levels of CO2 (5% to 99%) to concrete for a short period of time, usually followed by ...
Neusa Aparecida Munhak Beltrame   +3 more
doaj   +1 more source

Molecular sputter depth profiling using carbon cluster beams [PDF]

open access: yesAnalytical and Bioanalytical Chemistry, 2009
Sputter depth profiling of organic films while maintaining the molecular integrity of the sample has long been deemed impossible because of the accumulation of ion bombardment-induced chemical damage. Only recently, it was found that this problem can be greatly reduced if cluster ion beams are used for sputter erosion.
Wucher, Andreas, Winograd, Nicholas
openaire   +2 more sources

Effect of Freeze–Thaw Cycles on Carbonation Behavior of Three Generations of Repeatedly Recycled Aggregate Concrete

open access: yesApplied Sciences, 2021
Multiple recycling of waste concrete has attracted widespread attention. This study presented the carbonation behavior of repeatedly recycled aggregate concrete (RRAC) used in a micro-frozen region.
Hui Liu   +6 more
doaj   +1 more source

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