The concrete microstructure was successfully reconstructed using the complementarity of X-ray and neutron computed tomography (CT). Neither tomogram alone was found to be suitable to properly describe the microstructure of concrete under this study. However, by merging the information revealed by the two modalities, and using image segmentation, noise reduction, and image registration techniques we reconstruct the concrete microstructure. Void, aggregate, and cement paste phases are successfully captured down to the images' spatial resolution, even though the aggregate consists of multiple minerals. The coarse-aggregate volume fraction of the reconstructed microstructure was similar to that of the mixing proportions. Furthermore, image-based finite element analysis is performed to demonstrate the effects of microstructure on stress concentration and strain localization.
Bibliographical noteFunding Information:
This work was supported by Visegrad Group (V4)-Korea Joint Research Program . HK, TR, and KP acknowledge the supports from the National Research Foundation of Korea funded by the Ministry of Science, ICT & Future Planning (grant number: 2017K1A3A1A67015884 ). The Hungarian co-authors acknowledge the project No. 127102 RADCON that has been implemented with the support provided from the National Research, Development and Innovation Fund of Hungary , financed under the NN_17 V4-Korea funding scheme. The Polish co-author was supported by the Polish National Centre for Research and Development (Project V4 -Korea/2/2018). The information presented in this paper represents the sole opinion of the authors and does not necessarily reflect the views of the sponsoring agencies.
© 2021 The Author(s)
All Science Journal Classification (ASJC) codes
- Building and Construction
- Materials Science(all)