CO2 utilization for cementitious materials - A review

KSCE Journal of Civil Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 100227 - 100227

Published: March 1, 2025

Language: Английский

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Highly efficient resistance to chloride ion penetration and enhanced compressive strength in cement coupled with cationic polymer grafted nano-silica

Construction and Building Materials, Journal Year: 2025, Volume and Issue: 478, P. 141420 - 141420

Published: April 21, 2025

Language: Английский

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Chloride Penetration of Surface-Coated Concrete: Review and Outlook

Materials, Journal Year: 2024, Volume and Issue: 17(16), P. 4121 - 4121

Published: Aug. 20, 2024

Concrete coatings show significant promise in shielding concrete substrates from corrosion by effectively resisting harmful ions and moisture. Thanks to their practicality, high efficiency, cost-effectiveness, are considered a potent technique for enhancing the chloride resistance of reinforced structures. Over recent decades, extensive research has concentrated on employing bolster concrete's ability withstand penetration. This paper provides holistic review current studies infiltration surfaces treated with coating materials, primarily focused improvement efficiency transport modeling. Firstly, comparing functions assorted coatings, four inherent protection mechanisms summarized elaborated thoroughly. Afterwards, reported reviewed compared great detail, specific focus inorganic, organic, organic-inorganic composite coatings. Furthermore, theoretical about methodologies behavior prediction is summarized. Finally, this outlines potential directions field theoretical, technical, practical application challenges. not only identifies critical areas necessitating further investigation problem-solving domain but also aids selecting appropriate materials refining management strategies.

Language: Английский

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Development of a Superhydrophobic Protection Mechanism and Coating Materials for Cement Concrete Surfaces

Materials, Journal Year: 2024, Volume and Issue: 17(17), P. 4390 - 4390

Published: Sept. 5, 2024

In order to further enhance the erosion resistance of cement concrete pavement materials, this study constructed an apparent rough hydrophobic structure layer by spraying a micro-nano substrate coating on surface pavement. This was followed secondary spray hydroxy-silicone oil-modified epoxy resin and low energy-modified substance paste, which combine form superhydrophobic coating. The mechanism then analysed. Firstly, effects different types ratios substrates morphology performance were explored through contact angle testing scanning electron microscopy (SEM). Subsequently, Fourier transform infrared spectroscopy permeation gel chromatography employed ascertain optimal modification ratio, temperature, reaction oil with E51 type resin. Additionally, mechanical properties modified resin-low paste evaluated tensile tests. Finally, tested under range conditions, including acidic, alkaline, de-icer, UV ageing, freeze-thaw cycles wet wheel wear. results demonstrate that relying solely makes it challenging achieve performance. A diamond micropowder nano-silica is less prone cracking can more “air chamber” structures surface, better wear ring-opening products occur during preparation will severely affect its strength after curing. Controlling temperature reactant ratio effectively push dehydration condensation, produces grafted polymer. It noteworthy polymer content positively correlated hydrophobicity exhibited enhanced (based hydrochloric acid), ageing resistance, abrasion damage de-icers 19.41%, 18.36%, 43.17% 87.47%, respectively, in comparison conventional silane-based treatment.

Language: Английский

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Pre-treatment of waste hydrated cement used for replacement of fine aggregate using amine-based CO2 solvent

Journal of Building Engineering, Journal Year: 2024, Volume and Issue: 97, P. 110711 - 110711

Published: Sept. 13, 2024

Language: Английский

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