SPring-8, the large synchrotron radiation facility

Inquiry number

SOL-0000001102

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	density, crack, crevice, structure
level 5---Technique	imaging

Classification

A80.20 metal ・material, A80.30 inorganic material, M60.20 X-ray CT

Body text

X ray CT is unique technique to study void structure of concrete. Concrete contains aggregates and cement paste. Cement paste is porous, and its voids are estimated as path of chemical components which causes concrete deterioration. X ray CT is enables of nondestructive observations of void structure of cement paste in three dimensions. Figure 1 shows cross section of ordinary Portland cement paste. Black parts are voids. In upper left side we can see sand. To extract voids part, cross sections are digitized. Figure 2 shows digitized cross section. With image processing data, we can estimate physical quantities as pore size distributions．

[ T. Hitomi, Y. Mita, H. Saito and N. Takeda, Proceedings of the Japan Concrete Institute 26, 645-650 (2004), Fig. 5,　10,
©2004 Japan Concrete Institute ]

Source of the figure

Original paper/Journal article

Journal title

SPring-8におけるX線CT像によるモルタル微細構造の観察，コンクリート工学年次論文集，Vol.26，pp645-650.2004.7

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 interlnal structure of materials	spatial resolution of about 1µm

References

Document name
SPring-8におけるX線CT像によるモルタル微細構造の観察，コンクリート工学年次論文集，Vol.26，pp645-650.2004.7

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