Investigation of natural crack healing phenomena on historical masonry mortars
Cementitious materials have been often observed for many years to have a natural crack healing capability due in part to there-hydration of previously unhydrated cement within the matrix upon re-submersion in water. However, the naturalphenomena such a crack self-healing is very limited, because sel...
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| Published in | Journal of Ceramic Processing Research, 17(1) pp. 59 - 66 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
세라믹연구소
01.01.2016
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| Subjects | |
| Online Access | Get full text |
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| Summary: | Cementitious materials have been often observed for many years to have a natural crack healing capability due in part to there-hydration of previously unhydrated cement within the matrix upon re-submersion in water. However, the naturalphenomena such a crack self-healing is very limited, because self-healing capability of crack depends on various environmentalconditions. This study aims to clarify the natural healing phenomena of crack in cementitious materials and develop crack selfhealingcementitious materials based on the natural healing mechanisms. In this research, secondary phases of newly-formedproducts in historical masonry mortars were investigated in old bridges in the Netherlands. Moreover, in order to understandthe precipitation conditions of calcium salts in the cracks, morphology, the shape and size of re-hydration products in the oldmortar and brick, microscopy and SEM (EDS) analysis were also conducted. From these results, modified C-A-S-H phasesas well as the formation of calcite were found, which increase the self-healing capability of old masonry mortar by bothdissolution and chemical weathering effects of K-feldspar minerals in cracks or pores. KCI Citation Count: 0 |
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| ISSN: | 1229-9162 2672-152X |