Observation of void structure of the concrete.
Inquiry number
SOL-0000001104
Beamline
BL47XU (Micro-CT)
Scientific keywords
| A. Sample category | inorganic material |
|---|---|
| B. Sample category (detail) | insulator, ceramics, solid-state crystal |
| C. Technique | absorption and its secondary process |
| D. Technique (detail) | |
| E. Particular condition | 3D imaging (cf. CT), room temperature |
| F. Photon energy | X-ray (4-40 keV) |
| G. Target information | dislocation, strain, morphology |
Industrial keywords
| level 1---Application area | construction, industrial material |
|---|---|
| level 2---Target | Concrete |
| level 3---Target (detail) | |
| level 4---Obtainable information | structure |
| level 5---Technique | imaging |
Classification
A80.30 inorganic material, M60.20 X-ray CT
Body text
X ray CT is unique technique to study void structure of concrete. Cement paste is porous, and its voids are estimated as path of chemical components which causes concrete deterioration. Figure 1 shows cross section of ordinary Portland cement paste. Black parts are voids. In upper left side we can see sand. Our test piece is enlarged void with Calcium leaching test. Figure 2 shows three dimension void structure with combining digitized cross sections. With observing figure 2, we can grasp void structures, and develop understanding of deterioration mechanism of concrete.
Fig. 1 Fig. 2
[ T. Hitomi, Y. Mita and N. Takeda, Proceedings of JSMS Symposium on Structures Scenario 5, 223-228 (2005), Fig. 7, 16,
©2005 The Society of Materials Science, Japan ]
Source of the figure
Original paper/Journal article
Journal title
コンクリート構造物の補修，補強，アップグレード論文報告集（日本材料学会），Vol5 (2005) 223-228.
Figure No.
Technique
Source of the figure
No figure
Required time for experimental setup
1 shift(s)
Instruments
| Instrument | Purpose | Performance |
|---|---|---|
| X-ray CT system | obtain internal structure of materials | spatial resolution of about 1µm |
References
| Document name |
|---|
| 高輝度X線CTを用いたコンクリートのカルシウム溶脱の評価，材料学会シンポジウム投稿中 |
Related experimental techniques
Questionnaire
The measurement was possible only in SPring-8. Impossible or very difficult in other facilities.
This solution is an application of a main instrument of the beamline.
Ease of measurement
Easy
Ease of analysis
Middle
How many shifts were needed for taking whole data in the figure?
Less than one shift