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Related Concept Videos

Adaptations that Reduce Water Loss01:57

Adaptations that Reduce Water Loss

Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
Drying Shrinkage01:21

Drying Shrinkage

When hardened concrete is exposed to air with a relative humidity of less than 100 percent, it begins to lose the free water within its capillaries. As this water evaporates, the water initially adsorbed onto the calcium silicate hydrates migrates towards these now empty spaces and eventually evaporates as well. Over time, as more water leaves, the volume of the concrete decreases, a phenomenon known as drying shrinkage.
A portion of this drying shrinkage can be reversed; if the concrete is...
Cold Weather Concreting01:27

Cold Weather Concreting

When freshly poured concrete is exposed to freezing temperatures before it has set, the water within the concrete can freeze. This expansion disrupts the setting process, delays chemical reactions necessary for hardening, and increases the volume of pores within the hardened concrete, which weakens its overall structure. If the concrete manages to reach an appreciable strength before it freezes, the damage can be somewhat mitigated.
To counteract the negative impacts of cold weather, ensuring...
Frost Action on Concrete01:27

Frost Action on Concrete

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.
This freeze-thaw cycle primarily causes surface scaling, where...
Frost Resistant Concrete01:29

Frost Resistant Concrete

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.
Introducing microscopic air bubbles into the concrete mix through air entrainment creates small voids that accommodate ice expansion, thereby reducing internal pressures and preventing cracking. The optimal amount of entrained...
Design Example: Managing Concrete Workability01:14

Design Example: Managing Concrete Workability

This example deals with managing the workability of concrete for a raft foundation project under hot weather conditions. Workability is crucial for ensuring the concrete is easy to place, compact, and finish. In this scenario, a slump test — a common method to measure the workability of fresh concrete — initially indicated low workability. This was attributed to the rapid water loss from the concrete mix, exacerbated by the high temperatures causing the course aggregates to heat up.
To address...

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Related Experiment Video

Updated: May 14, 2026

Preparation and High-temperature Anti-adhesion Behavior of a Slippery Surface on Stainless Steel
10:52

Preparation and High-temperature Anti-adhesion Behavior of a Slippery Surface on Stainless Steel

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De-icing performance evolution with increasing hydrophobicity by regulating surface topography.

Wei Weng1, Xiaoyang Zheng2, Mizuki Tenjimbayashi3

  • 1Research Center for Macromolecules and Biomaterials, National Institute for Materials Science (NIMS), Tsukuba, Japan.

Science and Technology of Advanced Materials
|April 4, 2024
PubMed
Summary
This summary is machine-generated.

Surface topography significantly impacts de-icing performance. Micro-texture fraction dictates ice adhesion strength, crucial for developing effective anti-icing surfaces.

Keywords:
Superhydrophobicde-icingice adhesionice detachment simulationinterfacial strength distributionsurface topography

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Area of Science:

  • Materials Science
  • Surface Engineering
  • Tribology

Background:

  • Understanding surface topography's role in de-icing is critical but not fully elucidated.
  • Existing research lacks a unified parameter to describe topography's influence on ice adhesion.

Purpose of the Study:

  • To investigate the quantitative relationship between surface topography and ice adhesion strength.
  • To identify key topographical parameters governing de-icing performance.
  • To explore the correlation between hydrophobicity and de-icing capabilities.

Main Methods:

  • Fabrication of four textured surfaces with varying micro-texture sizes while maintaining constant surface chemistry.
  • Measurement of ice adhesion strength on developed surfaces.
  • Finite element method (FEM) simulations for ice detachment analysis.
  • Analysis of interfacial strength distribution between ice and surfaces.

Main Results:

  • Ice adhesion strength is directly proportional to the areal fraction of micro-textures.
  • Localized bonding strengthening is identified as the mechanism behind increased adhesion with micro-texture fraction.
  • The critical topography parameter depends on the interfacial strength distribution.
  • No definitive correlation exists between surface hydrophobicity and de-icing performance.

Conclusions:

  • Surface topography, specifically micro-texture fraction, is a decisive factor in de-icing.
  • Interfacial strength distribution dictates the relevant topographical parameters for ice adhesion.
  • Hydrophobicity and de-icing performance are governed by different topographical aspects and are not directly related.