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Observation of void structure of the concrete.

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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.

 
hitomi2.jpg
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 ]

 

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

Inquiry number

SOL-0000001104

Last modified 2011-07-28 13:23
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