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Quantitative study on crack of meso-damage and fracture concrete based on CT technique

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Abstract

The meso-mechanics experiment of concrete specimen is carried out by means of CT technology, the whole degradation deformation process of meso-cracks generation, propagation, coalescence and failure is obtained under uniaxial compression condition. Based on CT image of concrete meso-damage evolution, the recognition and extraction of meso-cracks are realized by means of the digital imageprocessing (DIP) technique, and the basic geometrical characteristics of meso-crack patterns are statistically analysed from length, width and area. The quantitative analysis of the meso-fracture process of concrete materials is performed. The results demonstrate that the quantitative analysis of the internal meso-crack of concrete can be taken as a quantitative index to reflect the damage and fracture process thereby the meso-fracture mechanism of concrete material is thoroughly investigated. So it has brought forth some new ideas to the study of damage evolution law of concrete under uniaxial compression condition.

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Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (Grant No.51009010, 51379015), China Postdoctoral Science Foundation funded project (Grant No. 2012M521727), and the Special Fund for Basic Scientific Research of Central College, Chang’an university (Grant No.CHD2012ZD014), and the Postdoctoral Science Foundation funded project of Shaanxi Provincial.

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Authors and Affiliations

  1. School of Civil Engineering, Chang’an University, Xi’an, 710061, China

    WEI TIAN

  2. Institute of Geotechnical Engineering, Xi’an University of Technology, Xi’an, 710048, China

    FANING DANG

  3. School of Highway, Chang’an University, Xi’an, 710064, China

    WEI TIAN & YONGLI XIE

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  1. WEI TIAN
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  2. FANING DANG
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  3. YONGLI XIE
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Correspondence to WEI TIAN.

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TIAN, W., DANG, F. & XIE, Y. Quantitative study on crack of meso-damage and fracture concrete based on CT technique. Sadhana 40, 263–276 (2015). https://doi.org/10.1007/s12046-014-0305-y

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  • DOI: https://doi.org/10.1007/s12046-014-0305-y

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