자기치유 재료 혼입 모르타르 보의 자기치유 성능 평가
Evaluation of Self-Healing Performance for Mortar Beams Containing Self-Healing Materials
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초록
본 연구에서는 실험을 통하여 자기치유 재료 혼입 모르타르 보의 자기치유 성능을 평가하였다. 실험에는 일반 모르타르 보 실험체와 자기치유 모르타르 보 실험체가 사용되었으며, 모르타르의 압축강도, 내력 및 균열의 자기치유 효과를 비교하여 자기치유 성능을 평가하였다. 실험결과 자기치유 재료를 혼입한 모르타르의 압축강도가 일반 모르타르의 압축강도보다 작았지만 28일 압축강도에 대한 118일 압축강도비율은 동일하게 나타났다. 실험체의 내력은 재령일이 길어질수록 증가하는 경향을 나타냈다. 일반 모르타르 실험체는 균열이 발생할 경우 재령일이 증가하여도 하중은 회복되지 않았으나 자기치유 모르타르 실험체의 경우 반응 생성물의 영향으로 내력이 다소 회복되는 경향을 나타냈다. 균열폭은 두 종류의 실험체 모두 치유기간이 지난 후 감소하는 경향을 보였으나 자기치유 모르타르 실험체에서만 반응생성물이 관찰되었다.
Abstract
In this study, the self-healing performance of mortar beams containing self-healing materials was evaluated through experiments. Normalmortar beams and self-healing mortar beams were used In the experiments. The self-healing performance was evaluated by comparing the mortarcompressive strength, member strength, and self-healing effects of cracks. The experimental results showed that the compressive strength of mortarcontaining self-healing material was smaller than that of normal mortar, but the ratio of 118 days compressive strength to 28 days compressive strengthwas the same. The member strength tended to increase with increasing curing period. In normal mortar specimens, the member strength did not recovereven if the curing period increased, but the strength of the self-healing mortar specimens tended to recover as reaction products were produced. Thecrack width tended to decrease after the healing periods in both specimens, but the reaction product was observed only in the self-healing mortarspecimens.
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