Results 21 to 30 of about 2,453 (263)

MFRWA: A Multi-Frequency Rayleigh Wave Approximation Method for Concrete Carbonation Depth Evaluation

open access: yesBuildings
Carbonation depth is essential to determine the durability and predict the remaining service life of concrete structures. This study proposes a multi-frequency Rayleigh wave approximation method (MFRWA) to evaluate carbonation depth by exploiting the ...
Xiangtao Sun   +5 more
doaj   +1 more source

Real-Time Monitoring of Cement Paste Carbonation with In Situ Optical Fiber Sensors

open access: yesChemosensors, 2023
Reinforced concrete structures are prevalent in infrastructure and are of significant economic and social importance to humanity. However, they are prone to decay from cement paste carbonation.
Pedro M. da Silva   +3 more
doaj   +1 more source

Effect of concrete stress states on carbonation depth of concrete

open access: yesJournal of Civil Engineering and Management, 2019
Carbonation can lead to reduction of alkalinity of concrete and initiation of steel reinforcement corrosion. In durability design of concrete structures, the carbonation depth should be duly considered.
Jian Wang   +4 more
doaj   +1 more source

Effect of Temperature on Concrete Carbonation Performance

open access: yesAdvances in Materials Science and Engineering, 2019
In this study, the effect of temperature on macroperformance and microcharacteristic of carbonized concrete was investigated. The carbonation depth, compressive strength, and surface strain of concrete under different simulated environments for 28 d were
Peng Liu   +3 more
doaj   +1 more source

Carbonation investigation on atmospherically exposed lime-treated silty soil

open access: yesCase Studies in Construction Materials, 2022
The effect of carbonation on a one-year atmospherically exposed lime-treated soil structure is investigated. The investigation involves analyzing the chemical characteristics and pore-structure modifications of several specimens sampled up to 12 cm depth
Geetanjali Das   +4 more
doaj   +1 more source

Ultrahigh‐Yield, Multifunctional, and High‐Performance Organic Memory for Seamless In‐Sensor Computing Operation

open access: yesAdvanced Functional Materials, EarlyView.
Molecular engineering of a nonconjugated radical polymer enables a significant enhancement of the glass transition temperature. The amorphous nature and tunability of the polymer, arising from its nonconjugated backbone, facilitates the fabrication of organic memristive devices with an exceptionally high yield (>95%), as well as substantial ...
Daeun Kim   +14 more
wiley   +1 more source

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

open access: yesHeliyon
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   +4 more
doaj   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

open access: yesAdvanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha   +18 more
wiley   +1 more source

Time-dependent model for in-situ concrete carbonation depth under combined effects of temperature and relative humidity

open access: yesCase Studies in Construction Materials
Fluctuations in temperatures and relative humidity in the external environment significantly influence the carbonation depth in concrete structures, making it an essential topic when considering concrete durability. This study aims to predict and compare
Ting Du   +6 more
doaj   +1 more source

Experimental Methods to Evaluate the Carbonation Degree in Concrete—State of the Art Review

open access: yesApplied Sciences, 2023
The carbonation action in concrete, in which carbonation reactions transform calcium hydroxide into calcium carbonate, is considered as a multi-phase physico-chemical process.
Huyen Bui   +2 more
doaj   +1 more source

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