Overview of the use of micro-computed tomography (micro-CT) to investigate the relation between the material characteristics and properties of cement-based materials

Sang Yeop Chung, Ji Su Kim, Dietmar Stephan, Tong Seok Han

Research output: Contribution to journalReview article

Abstract

Cement-based materials are generally highly heterogeneous, and their material properties are strongly affected by the characteristics and spatial distributions of each constituent. However, it is difficult to characterize the compounds inside these materials without destroying them. Micro-computed tomography (micro-CT) is an approach that enables the investigation of the inner structure of a material without damaging the specimen. From micro-CT, a series of cross-sectional images of a material with a pixel size of a few micrometers can be achieved, which can be used to evaluate the characteristics of the material. In this study, the use of micro-CT for various cement-based materials, e.g., lightweight concrete and high-performance concrete, is summarized. The characteristics of pores and solid phases, such as the volume fraction and spatial distribution, are also analyzed, and their relations with the physical properties of cement-based materials are reviewed and presented. It is shown that micro-CT has a great potential not only for investigating the performance of existing materials but also for developing new cement-based materials.

Original languageEnglish
Article number116843
JournalConstruction and Building Materials
Volume229
DOIs
Publication statusPublished - 2019 Dec 30

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Tomography
Cements
Spatial distribution
High performance concrete
Volume fraction
Materials properties
Physical properties
Pixels
Concretes

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

Cite this

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abstract = "Cement-based materials are generally highly heterogeneous, and their material properties are strongly affected by the characteristics and spatial distributions of each constituent. However, it is difficult to characterize the compounds inside these materials without destroying them. Micro-computed tomography (micro-CT) is an approach that enables the investigation of the inner structure of a material without damaging the specimen. From micro-CT, a series of cross-sectional images of a material with a pixel size of a few micrometers can be achieved, which can be used to evaluate the characteristics of the material. In this study, the use of micro-CT for various cement-based materials, e.g., lightweight concrete and high-performance concrete, is summarized. The characteristics of pores and solid phases, such as the volume fraction and spatial distribution, are also analyzed, and their relations with the physical properties of cement-based materials are reviewed and presented. It is shown that micro-CT has a great potential not only for investigating the performance of existing materials but also for developing new cement-based materials.",
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Overview of the use of micro-computed tomography (micro-CT) to investigate the relation between the material characteristics and properties of cement-based materials. / Chung, Sang Yeop; Kim, Ji Su; Stephan, Dietmar; Han, Tong Seok.

In: Construction and Building Materials, Vol. 229, 116843, 30.12.2019.

Research output: Contribution to journalReview article

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AU - Chung, Sang Yeop

AU - Kim, Ji Su

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AU - Han, Tong Seok

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