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Related Concept Videos

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Frost Action on Concrete

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Concrete structures in cold climates, such as those along roadsides, can retain moisture. This moisture makes them susceptible to frost-related damage when temperatures fall below freezing. Adding moisture worsens the damage during temperature fluctuations, leading to repeated freezing and thawing. De-icing salts, spread over these structures to melt ice, add to the freeze-thaw cycle, and draw even more moisture into the concrete.
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Air-entraining agents improve the durability and workability of concrete in climates with frequent freezing and thawing. These agents prevent cracks by introducing small air bubbles into the mix, creating spaces accommodating water expansion when temperatures drop. The air-entraining agents lower the surface tension of water, forming stable, small air bubbles. This method is more effective than having accidental large voids, as the intentional, smaller, and evenly distributed air voids improve...
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Hydrostatic Pressure Force on a Plane Surface01:04

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When a plane surface is submerged in a fluid, hydrostatic forces develop on the surface due to the fluid's pressure. For horizontal surfaces, the pressure exerted by the fluid is uniform because the depth remains constant. The resultant force is determined by the pressure at the given depth multiplied by the area of the surface, and it acts through the centroid of the surface. For vertical surfaces, the pressure varies with depth, increasing as the distance from the fluid's free surface...
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Frost Resistant Concrete01:29

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Concrete's susceptibility to frost damage during freeze-thaw cycles demands strategic measures to enhance its frost resistance. Employing techniques like air entrainment, adjusting the water-cement ratio, proper curing, and selecting appropriate aggregates are essential.
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Surface tension is a fundamental property of fluids, occurring at the boundary between a liquid and a gas or between two immiscible liquids. This phenomenon arises from the cohesive forces between molecules at the fluid's surface, creating an effect similar to a stretched elastic membrane. Inside each fluid, molecules are equally attracted in all directions by neighboring molecules, but surface molecules experience a net inward force, resulting in surface tension.
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Updated: Oct 21, 2025

Fabrication of Superhydrophobic Metal Surfaces for Anti-Icing Applications
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Fabrication of Superhydrophobic Metal Surfaces for Anti-Icing Applications

Published on: August 15, 2018

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Dynamic Anti-Icing Surfaces (DAIS).

Feng Wang1, Yizhi Zhuo1, Zhiwei He2

  • 1NTNU Nanomechanical Lab, Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), Trondheim, 7491, Norway.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|September 9, 2021
PubMed
Summary
This summary is machine-generated.

Surface icephobicity research must evolve beyond static models. This review introduces dynamic anti-icing surfaces (DAIS) that adapt to changing conditions, crucial for harsh environments and extended functionality.

Keywords:
dynamic anti-icing surfacesicephobic materialslow ice adhesionsurface icephobicity

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Area of Science:

  • Materials Science
  • Surface Chemistry
  • Tribology

Background:

  • Current anti-icing surfaces primarily focus on static ice-substrate interfaces.
  • Real-world ice-substrate interactions are dynamic, influenced by time, temperature, and external stimuli.
  • Understanding these dynamic properties is vital for developing advanced anti-icing solutions.

Purpose of the Study:

  • To critically re-assess existing anti-icing surfaces by incorporating dynamic evolution.
  • To review the state-of-the-art in dynamic anti-icing surfaces (DAIS).
  • To highlight the potential applications and challenges of DAIS for future material design.

Main Methods:

  • Survey of current anti-icing surface literature.
  • Analysis of dynamic changes at the ice-substrate interface.
  • Re-assessment of surfaces considering time-evolving properties.

Main Results:

  • Existing anti-icing surface designs are often based on static assumptions.
  • Dynamic properties of ice-substrate interfaces significantly impact anti-icing performance.
  • The concept of dynamic anti-icing surfaces (DAIS) is proposed and explored.

Conclusions:

  • A paradigm shift towards dynamic anti-icing surface design is necessary.
  • DAIS offer promising solutions for extreme conditions and long-term applications.
  • Further research is needed to overcome challenges in DAIS development and implementation.