Results 21 to 30 of about 2,552 (162)
Applied 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
BuildingsCarbonation 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
Bioenergetic control of soil carbon dynamics across depth
Nature 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
Real-Time Monitoring of Cement Paste Carbonation with In Situ Optical Fiber Sensors
Chemosensors, 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 Temperature on Concrete Carbonation Performance
Advances 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
Carbonization test and orthogonal polynomial regression analysis of steel fiber reclaimed concrete
HeliyonTo 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
Case Studies in Construction MaterialsFluctuations 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
The role of nutricline depth in regulating the ocean carbon cycle [PDF]
Proceedings of the National Academy of Sciences, 2008 Carbon uptake by marine phytoplankton, and its export as organic matter to the ocean interior (i.e., the “biological pump”), lowers the partial pressure of carbon dioxide ( p CO 2 ) in the upper ocean and facilitates the diffusive drawdown of ...
Pedro, Cermeño +5 more
openaire +2 more sources
Science and Engineering of Composite MaterialsThe 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 +9 more
doaj +1 more source
BuildingsThis study develops a numerical model based on a multi-physics coupled finite element method to predict the carbonation depth of hardened alkali-activated slag under accelerated carbonation curing conditions.
Lei Zhang +4 more
doaj +1 more source