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http://dx.doi.org/10.14190/JRCR.2018.6.4.283

Influence of Exposure Environmental Conditions on the Crack Healing Performance of Self-healing Repair Mortar Specimens  

Lee, Woong-Jong (Self-healing Green Concrete Research Center, Sungkyunkwan University)
Lee, Hyun-Ho (Department of Civil, Architectural and Environmental System Engineering, Sungkyunkwan University)
Ahn, Sang-Wook (Intchem Co., Ltd.)
Lee, Kwang-Myong (Department of Civil, Architectural and Environmental System Engineering, Sungkyunkwan University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.6, no.4, 2018 , pp. 283-288 More about this Journal
Abstract
Since the crack self-healing materials are activated according to the exposure environmental conditions from the time of crack occurrence, it is very important to clarify the relationship between the healing performance and the exposure environmental conditions of the crack surface. In this paper, the influence of the exposure environmental conditions on the crack healing performance of self-healing repair mortar was investigated through the water permeability test. The influence of temperature and humidity on the crack width of cracked specimens was evaluated. As a result of measuring the change of the crack width, the effect of curing temperature was negligible but it was confirmed that crack-closing occurred due to the change of dry-wet condition. The healing materials produced on the crack surface of the specimens was identified as calcite minerals. Since the minerals with high density are precipitated under the influence of gravity, the healing performance is somewhat different according to the direction of the crack surface, and the healing performance was significantly improved in the wet exposure condition than the air exposure condition.
Keywords
Self-healing; Crack; Water permeability test; Mortar; Calcium carbonate;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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