Abstract
This paper presents an attempt to tackle limitations in the two-dimensional (2D) stereological characterization of the air-void parameters of hardened cement-based materials by employing three-dimensional (3D) X-ray computed tomography (CT), a technique capable of simultaneously imaging numerous sections within a specimen. Using three hardened cement paste specimens composed of different air-void systems, we performed sensitivity analyses in terms of the number of traverse lines employed for a single section and the number of sampling sections across the height of a specimen. Parameters for a single section converged rapidly as the number of traverse lines increased, although unacceptable variations were in evidence across multiple sections. When the number of sampling sections exceeded about 10, a set of representative air-void parameters was successfully obtained within a standard variation of less than 10% of average values. The spacing factor and air content measures obtained via CT image analysis were in good agreement with previously reported data and with the original spacing factors defined for 3D space. Some advantages found in the use of X-ray CT imaging for determining air-void parameters are discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 93-101 |
| Number of pages | 9 |
| Journal | Construction and Building Materials |
| Volume | 37 |
| DOIs | |
| Publication status | Published - 2012 Dec 1 |
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All Science Journal Classification (ASJC) codes
- Civil and Structural Engineering
- Building and Construction
- Materials Science(all)
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Determination of air-void parameters of hardened cement-based materials using X-ray computed tomography. / Kim, Kwang Yeom; Yun, Tae Sup; Choo, Jinhyun; Kang, Dong Hun; Shin, Hyu Soung.
In: Construction and Building Materials, Vol. 37, 01.12.2012, p. 93-101.Research output: Contribution to journal › Article
TY - JOUR
T1 - Determination of air-void parameters of hardened cement-based materials using X-ray computed tomography
AU - Kim, Kwang Yeom
AU - Yun, Tae Sup
AU - Choo, Jinhyun
AU - Kang, Dong Hun
AU - Shin, Hyu Soung
PY - 2012/12/1
Y1 - 2012/12/1
N2 - This paper presents an attempt to tackle limitations in the two-dimensional (2D) stereological characterization of the air-void parameters of hardened cement-based materials by employing three-dimensional (3D) X-ray computed tomography (CT), a technique capable of simultaneously imaging numerous sections within a specimen. Using three hardened cement paste specimens composed of different air-void systems, we performed sensitivity analyses in terms of the number of traverse lines employed for a single section and the number of sampling sections across the height of a specimen. Parameters for a single section converged rapidly as the number of traverse lines increased, although unacceptable variations were in evidence across multiple sections. When the number of sampling sections exceeded about 10, a set of representative air-void parameters was successfully obtained within a standard variation of less than 10% of average values. The spacing factor and air content measures obtained via CT image analysis were in good agreement with previously reported data and with the original spacing factors defined for 3D space. Some advantages found in the use of X-ray CT imaging for determining air-void parameters are discussed.
AB - This paper presents an attempt to tackle limitations in the two-dimensional (2D) stereological characterization of the air-void parameters of hardened cement-based materials by employing three-dimensional (3D) X-ray computed tomography (CT), a technique capable of simultaneously imaging numerous sections within a specimen. Using three hardened cement paste specimens composed of different air-void systems, we performed sensitivity analyses in terms of the number of traverse lines employed for a single section and the number of sampling sections across the height of a specimen. Parameters for a single section converged rapidly as the number of traverse lines increased, although unacceptable variations were in evidence across multiple sections. When the number of sampling sections exceeded about 10, a set of representative air-void parameters was successfully obtained within a standard variation of less than 10% of average values. The spacing factor and air content measures obtained via CT image analysis were in good agreement with previously reported data and with the original spacing factors defined for 3D space. Some advantages found in the use of X-ray CT imaging for determining air-void parameters are discussed.
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U2 - 10.1016/j.conbuildmat.2012.07.012
DO - 10.1016/j.conbuildmat.2012.07.012
M3 - Article
AN - SCOPUS:84865315751
VL - 37
SP - 93
EP - 101
JO - Construction and Building Materials
JF - Construction and Building Materials
SN - 0950-0618
ER -