Long-term performance of reinforced concrete under a de-icing road environment

Tang, Luping; Boubitsas, Dimitrios; Huang, Liming

doi:10.1016/j.cemconres.2022.107039

Cited by 8 publications

(3 citation statements)

References 30 publications

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“…However, over-cited studies outstand the ones related to analyzing de-icing salts and their effect on concrete. In this respect, authors such as Luping Tant et al performed a long-term analysis of chloride penetration and reinforcement corrosion in highway concrete elements exposed since 1990 [8]. Other authors such as Meijie Xie et al focused on the development of numerical models to predict chloride ingress in concrete subjected to atmospheric carbonation and de-icing salts usage [9].…”

Section: State Of the Artmentioning

confidence: 99%

The Use of De-Icing Salts in Post-Tensioned Concrete Slabs and Their Effects on the Life of the Structure

Alonso

Moraleda²,

Alberti

et al. 2023

Applied Sciences

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This article expounds on the problem of the use of de-icing salts in the corrosion of steel rebars in bridge decks and their effect on post-tensioning elements. In particular, this paper focuses this problem on structures affected by an aggregate–alkali reaction and without any waterproof treatment using the example of one structure whose repair was carried out in 2020. In this structure, the internal stresses due to the aggregate–alkali reaction caused longitudinal cracks in the upper face of the deck, through which the penetration of chloride ions was concentrated, causing, finally, the brittle fracture of the steel bars and the corrosion of the prestressing elements. This article also explains some conclusions about the most probable mechanisms that resulted in the brittle fracture of the steel bars due to the extraordinary and unexpected nature of this phenomenon.

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Section: State Of the Artmentioning

confidence: 99%

The Use of De-Icing Salts in Post-Tensioned Concrete Slabs and Their Effects on the Life of the Structure

Alonso

Moraleda²,

Alberti

et al. 2023

Applied Sciences

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“…The icing phenomenon resulting from severe weather conditions presents a multifaceted challenge, not only causing pronounced declines in the operational efficacy of critical infrastructure such as transmission lines, , aircraft, roadways, , and various outdoor infrastructural projects , but also imposing substantial economic repercussions and endangering human lives. Deicing methods that rely on human intervention could be inefficient and outdated .…”

Section: Introductionmentioning

confidence: 99%

Robust All-Waterborne Superhydrophobic Coating with Photothermal Deicing and Passive Anti-icing Properties

Liu,

Li,

et al. 2023

ACS Appl. Mater. Interfaces

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The compelling integration of superhydrophobic coatings with light-to-heat conversion capabilities has garnered substantial interest due to their dual functionality encompassing passive anti-icing and deicing attributes. However, the insufficient mechanical stability and the environmental and human health concerns stemming from the extensive use of organic solvents limit their practical application. In this study, an all-waterborne superhydrophobic photothermal coating (PCPAS) was prepared through the synergy of composite micro–nanoparticles derived from carbon nanotubes (CNT), polydopamine (PDA), and Ag particles with fluorine-containing polyacrylic emulsion (PFA). The PDA provided active sites for Ag+ reduction reaction and enhanced the interfacial interaction between CNT and Ag particles. The interfacial enhancement enabled the coating to maintain stable superhydrophobicity after 260 times sandpaper abrasion and 240 times tape peeling. Simultaneously, the composite micro–nanoparticle’s light-to-heat conversion ability gave the coating excellent anti-icing/deicing capabilities. Under the condition of −20 °C, the freezing time of 30 μL of water droplets was extended to 392 s, and 2 × 2 × 2 cm ice cubes placed on the surface of the coating could completely melt after only 1142 s under simulated sunlight irradiation with a 1 kW/m2 intensity. In addition, the coating also had suitable self-cleaning properties and substrate applicability. The comprehensive attributes of this all-waterborne photothermal superhydrophobic coating render it a promising contender for anti-icing and deicing applications in challenging outdoor environments.

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“…Tang found that ultra early strength cement concrete obtained by spraying the curing agent once after pouring can achieve the best curing effect [29]. Researchers have also found that the higher the curing temperature, the greater the strength of concrete [30]. Using the three abovementioned strategies, the straw-doped reactive powder concrete can be made to have early strength performance to allow it to adapt to marine environments.…”

Section: Introductionmentioning

confidence: 99%

Research into Preparation and Performance of Fast-Hardening RPC Mixed with Straw

et al. 2023

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Based on its characteristics of early strength, good toughness, and excellent mechanical and impact resistance, steel fiber-reinforced fast-hardening reactive powder concrete (RPC) is expected to become an alternative material used in the rapid repair of marine concrete structures. However, the steel fibers have also caused corrosion problems in coastal environments. To make doped fiber fast-hardening RPC more adaptable for use in ocean engineering, this study prepares fast-hardening RPC mixed with straw and studied the effects of straw content and curing age on its slump flow, setting time, and mechanical performance (flexural strength, compressive strength, and flexural toughness). The effects of straw addition on the compactness and hydration products of fast-hardening RPC were studied through macro- (ultrasonic analysis) and micro-scopic analysis (electron microscopy scanning and X-ray diffraction patterns). The straw content mentioned in this paper refers to the percentage of straw in relation to RPC volume. The results showed that straw reduced the fluidity of RPC slurry by 10.5–11.5% compared to concrete without straw, and it accelerated the initial setting of RPC slurry. When the straw content accounted for 1% of RPC volume, the setting rate was the fastest, with a increasing rate being 6–18%. Compared to concrete without straw, the flexural and compressive strength of fast-hardening RPC was enhanced by 3.7–30.5%. When the content was either 3% or 4%, the mechanical properties improved. Moreover, when the straw content accounted for 4% of RPC volume, the flexural toughness was the highest, with the increase rate being 21.4% compared to concrete without straw. Straw reduces the compactness of fast-hardening RPC.

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Long-term performance of reinforced concrete under a de-icing road environment

Cited by 8 publications

References 30 publications

The Use of De-Icing Salts in Post-Tensioned Concrete Slabs and Their Effects on the Life of the Structure

The Use of De-Icing Salts in Post-Tensioned Concrete Slabs and Their Effects on the Life of the Structure

Robust All-Waterborne Superhydrophobic Coating with Photothermal Deicing and Passive Anti-icing Properties

Research into Preparation and Performance of Fast-Hardening RPC Mixed with Straw

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