Fig. 1. Sample preparation process for BSE test
Fig. 2. Images derived from a portion of the crack using image tool
Fig. 3. BSE images for top, middle and bottom
Fig. 4. Total image and self-healing product(sky blue) image of top, middle and bottom
Fig. 5. Crack filling ratio of top, middle and bottom
Fig. 6. SEM-EDS analysis for each part of the crack
Fig. 7. Element analysis of self-healing product by SEM-EDS overlaying
Fig. 8. Molar ratios of self-healing product
Fig. 9. Type and amount of self-healing product of top, middle and bottom
Fig. 10. Type and amount of self-healing product in crack
Table 1. Chemical composition of raw materials(Mass %)
참고문헌
- Ahn, T.H., Kishi, T. (2010). Crack self-healing behavior of cementitious composites incorporating various mineral admixtures, Journal of Advanced Concrete Technology, 8(2), 171-186. https://doi.org/10.3151/jact.8.171
- Chen, J., Liu, X., Ye, G. (2016). Quantification the filling of microcracks due to autogenous self-healing in cement paste, International RILEM Conference on Materials, International RILEM Conference on Materials, 22-24.
- Huang, H., Ye, G., Damidot, D. (2013). Characterization and quantification of self-healing behaviors of microcracks due to further hydration in cement paste, Cement and Concrete Research, 52, 71-81. https://doi.org/10.1016/j.cemconres.2013.05.003
- Hong, G.T., Choi, S.C. (2017). Rapid self-sealing of cracks in cementitious materials incorporating superabsorbent polymers, Construction and Building Materials, 143, 366-375. https://doi.org/10.1016/j.conbuildmat.2017.03.133
- Huang, H., Ye, G., Damiot, D. (2014). Effect of blast furnace slag on self-healing of microcracks in cementitious materials, Cement and Concrete Research. 60, 68-82. https://doi.org/10.1016/j.cemconres.2014.03.010
- Joseph, C., Gardner D., Jefferson, T., Isaacs, B., Lark, B. (2010). Self-healing cementitious materials: a review of recent work, Proceedings of the ICE - Construction Materials, 164(1), 29-41. https://doi.org/10.1680/coma.900051
- Jiang, Z., Li, W., Yuan, Z. (2015). Influence of mineral additives and environmental conditions on the self-healing capabilities of cementitious materials, Cement and Concrete Composites, 57, 116-127. https://doi.org/10.1016/j.cemconcomp.2014.11.014
- Kapeluszna, E., Kotowica, L., Rozycka, A., Golek, L. (2017). Incorporation of Al in C-A-S-H gels with various Ca/Si and Al/Si ratio: Microstructural and structural characteristics with DTA/TG, XRD, FTIR and TEM analysis, Construction Building Materials, 155, 643-653. https://doi.org/10.1016/j.conbuildmat.2017.08.091
- Mehta, P.K., Monteiro, P.J.M. (2006). Concrete-Third Edition, McGraw-Hill, 121-198.
- Nijland, T.J., Larbi, J.A., van Hees, R.P.J., Lubelli, B., de Rooij, M.R. (2007). "Self-healing phenomena in concretes and masonry mortars: a microscopic study," Proceedings of the First International Conference on self Healing Materials, Noordwijk aan zee, the Netherlands April, 1-9.
- Neville, A.M. (2012). Properties of Concrete: Fourth and Final Edition, McGraw-Hill, 91-102.
- Wang, S.D., Scrivener, K.L. (1995). Hydration products of alkali activated slag cement, Cement and Conrete Research, 25, 561-571. https://doi.org/10.1016/0008-8846(95)00045-E