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Related Concept Videos

Frost Action on Concrete01:27

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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Design Example: Maintaining Level of an Embankment01:19

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Constructing a roadway embankment over uneven terrain requires precise leveling to ensure stability and proper drainage. Surveyors use a leveling instrument and staff to calculate ground elevations and determine the required fill material at each point along the embankment alignment.The process begins by positioning a leveling instrument near a benchmark with a known elevation. A backsight reading establishes the instrument height, which serves as a reference for subsequent measurements. A...
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Design Example: Managing Concrete Workability01:14

Design Example: Managing Concrete Workability

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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.
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Design Example: Creating a Hydraulic Model of a Dam Spillway

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Related Experiment Video

Updated: Sep 2, 2025

Fabrication of Superhydrophobic Metal Surfaces for Anti-Icing Applications
11:20

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Leveraging Solidification Dynamics to Design Robust Ice-Shedding Surfaces.

Michael J Wood1, Gregory Brock1, Phillip Servio1

  • 1Department of Chemical Engineering, McGill University, MontrĂ©al, H3A 0C5, Canada.

ACS Applied Materials & Interfaces
|August 10, 2022
PubMed
Summary
This summary is machine-generated.

Researchers engineered a novel metal surface for ice-shedding. This surface achieves extremely low ice adhesion strength (12.5 kPa) by controlling water solidification and stress concentrations, eliminating the need for chemical coatings.

Keywords:
anti-icingice-adhesionice-sheddingsolidificationstress concentration

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Area of Science:

  • Materials Science
  • Surface Engineering
  • Physics of Freezing

Background:

  • Ice adhesion to surfaces presents significant challenges across various industries.
  • Developing surfaces with reduced ice adhesion is a critical area of research.
  • Current methods often rely on chemical coatings, which can degrade over time.

Purpose of the Study:

  • To develop a novel, robust metal surface with extremely low ice adhesion strength.
  • To leverage the physics of water solidification for ice-shedding capabilities.
  • To demonstrate the efficacy of engineered stress concentrations in reducing ice adhesion.

Main Methods:

  • Utilized a bare woven metal wire cloth substrate.
  • Engineered pore geometries to induce stress concentrations during ice formation.
  • Exploited microstructural topography for facile crack propagation at the ice-interface.
  • Investigated the physical processes of ice formation and delamination.

Main Results:

  • Achieved an exceptionally low ice adhesion strength of 12.5 kPa on the engineered metal surface.
  • Demonstrated successful ice shedding without the use of any chemical coatings.
  • Validated the principle of using controlled stress concentrations to weaken the ice bond.

Conclusions:

  • A robust metal surface with superior ice-shedding properties can be engineered.
  • Understanding and manipulating water solidification dynamics is key to designing anti-icing surfaces.
  • This approach offers a durable, coating-free alternative for reducing ice adhesion strength.