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Updated: Jan 19, 2026

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Crack Width Estimation of Mortar Specimen Using Gas Diffusion Experiment.

Do-Keun Lee1, Min-Hyuk Lim2, Kyung-Joon Shin3

  • 1Civil Engineering, Chungnam National University, Daejeon 34134, Korea. likedg@naver.com.

Materials (Basel, Switzerland)
|September 19, 2019
PubMed
Summary
This summary is machine-generated.

A new gas diffusion test effectively estimates crack width in self-healing concrete. This method offers a reliable alternative for evaluating concrete

Keywords:
crack width estimationcracked specimengas diffusion coefficient

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Area of Science:

  • Materials Science
  • Civil Engineering
  • Concrete Technology

Background:

  • Self-healing concrete technologies are advancing for structural maintenance.
  • Current methods for evaluating self-healing performance, like water permeability tests, face reliability issues due to water viscosity and material elution.
  • A robust and reliable evaluation method for self-healing concrete is needed.

Purpose of the Study:

  • To propose and validate a novel gas diffusion test for assessing self-healing concrete.
  • To establish a method for estimating crack width in self-healing concrete.
  • To provide a reliable alternative for evaluating the self-healing performance of concrete structures.

Main Methods:

  • Development of a gas diffusion test protocol.
  • Application of the gas diffusion test to specimens with varying crack widths.
  • Verification of the correlation between gas diffusion measurements and crack width.

Main Results:

  • The proposed gas diffusion test accurately estimates crack width in concrete.
  • The method demonstrates effectiveness in quantifying crack dimensions relevant to self-healing.
  • Gas diffusion measurements provide a reliable indicator of crack characteristics.

Conclusions:

  • The gas diffusion test is a viable and effective method for estimating crack width in self-healing concrete.
  • This technique offers improved reliability over traditional water permeability tests.
  • The gas diffusion test can be applied to evaluate the overall self-healing performance of concrete.