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http://dx.doi.org/10.14190/JRCR.2022.10.4.569

Healing Performance of Concrete Containing Hybrid Self-healing Materials  

Mih-ho, Hwang (Self-healing green concrete research center, Sungkyunkwan University)
Hyuk, Kwon (WITH M-TECH Co., Ltd.)
Hyung-Suk, Kim (Department of Civil, Architectural and Environmental System Engineering, Sungkyunkwan University)
Sung, Choi (Self-healing green concrete research center, Sungkyunkwan University)
Kwang-Myong, Lee (Department of Civil, Architectural and Environmental System Engineering, Sungkyunkwan University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.10, no.4, 2022 , pp. 569-576 More about this Journal
Abstract
In this study, the healing performance of hybrid self-healing concrete was investigated by mixing bacterial pellets(BP) and solid phase capsules(SC), respectively, based on organic-inorganic self-healing material(MC). Constant water head permeability test was applied as a method of evaluating the healing performance, and the healing rate and the healed crack width calculated by the equivalent crack width were used as evaluation indicies. As a result of the water permeability test, when the initial crack width was 0.3 mm, the healing rates of MC-BP and MC-SC were 2.1~3.0 %pt higher than that of MC, and the healed crack width of hybrid concrete increased by 0.017~0.018 mm. In conclusion, it was found that the self-healing performance was not significantly improved even if the two types of healing materials are used together.
Keywords
Self-healing materials; Organic-inorganic combined materials; Bacteria; Solid capsule; Hybrid self-healing concrete; Constant water head permeability test;
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