신규 미생물의 탐색과 미생물 적용 콘크리트의 성능평가 : 미생물의 생체광물형성작용 이용 Investigation of newly found microorganism and Performance evaluation of microorganism applied concrete원문보기
본 논문은 콘크리트 유용 미생물을 탐색하여 적용하는 것이 목적이다. 첫번째 단계로써, 경북대학교내 구조물과 제주도에서 신규미생물을 탐색하여 수집하였다. 이렇게 수집하고 배양한 미생물들을 분리하는 작업을 걸쳐 실험에 사용하였다. 실험에 사용된 배양배지의 종류는 분리작업을 위한 고체배지와 적용배양을 위한 액체배지이다. 본 실험에 사용하기 위해 최종 분리한 미생물은 4종이다. 콘크리트 성능평가를 위해 제작된 공시체는 총 5종(미생물 대조군 4종, 일반 콘크리트실험군 1종)이다. 각 공시체는 3일, 7일, 28일 양생 후 성능실험을 하였으며 성능평가를 위해 압축강도실험, 휨강도실험, 염해저항성실험을 실시하였다. 위 실험들은 ...
본 논문은 콘크리트 유용 미생물을 탐색하여 적용하는 것이 목적이다. 첫번째 단계로써, 경북대학교내 구조물과 제주도에서 신규미생물을 탐색하여 수집하였다. 이렇게 수집하고 배양한 미생물들을 분리하는 작업을 걸쳐 실험에 사용하였다. 실험에 사용된 배양배지의 종류는 분리작업을 위한 고체배지와 적용배양을 위한 액체배지이다. 본 실험에 사용하기 위해 최종 분리한 미생물은 4종이다. 콘크리트 성능평가를 위해 제작된 공시체는 총 5종(미생물 대조군 4종, 일반 콘크리트실험군 1종)이다. 각 공시체는 3일, 7일, 28일 양생 후 성능실험을 하였으며 성능평가를 위해 압축강도실험, 휨강도실험, 염해저항성실험을 실시하였다. 위 실험들은 KS규격에 준하여 실시하였으며, 세부적인 정성분석을 위하여 XRD와 SEM분석을 하였다. 결과를 보면, 압축강도와 휨강도는 JC-2 공시체의 성능이 가장 우수한 것이로 나타났으며 염해저항성은 KNU401 공시체가 가장 성능이 우수한 것으로 나타났다. 본 연구는 기초실험으로써 재료성능개선을 위해 더 많은 연구들이 진행되어야 할 것이다.
본 논문은 콘크리트 유용 미생물을 탐색하여 적용하는 것이 목적이다. 첫번째 단계로써, 경북대학교내 구조물과 제주도에서 신규미생물을 탐색하여 수집하였다. 이렇게 수집하고 배양한 미생물들을 분리하는 작업을 걸쳐 실험에 사용하였다. 실험에 사용된 배양배지의 종류는 분리작업을 위한 고체배지와 적용배양을 위한 액체배지이다. 본 실험에 사용하기 위해 최종 분리한 미생물은 4종이다. 콘크리트 성능평가를 위해 제작된 공시체는 총 5종(미생물 대조군 4종, 일반 콘크리트실험군 1종)이다. 각 공시체는 3일, 7일, 28일 양생 후 성능실험을 하였으며 성능평가를 위해 압축강도실험, 휨강도실험, 염해저항성실험을 실시하였다. 위 실험들은 KS규격에 준하여 실시하였으며, 세부적인 정성분석을 위하여 XRD와 SEM분석을 하였다. 결과를 보면, 압축강도와 휨강도는 JC-2 공시체의 성능이 가장 우수한 것이로 나타났으며 염해저항성은 KNU401 공시체가 가장 성능이 우수한 것으로 나타났다. 본 연구는 기초실험으로써 재료성능개선을 위해 더 많은 연구들이 진행되어야 할 것이다.
This paper is intended to find microorganisms that are good for concrete and to apply them to concrete. As a first step, selection of microorganism were performed several places, Kyungpook national university and Jeju island. Several species of microorganism from these places were separated from sam...
This paper is intended to find microorganisms that are good for concrete and to apply them to concrete. As a first step, selection of microorganism were performed several places, Kyungpook national university and Jeju island. Several species of microorganism from these places were separated from samples selected and cultured. In this study, two types of medium were used for raising microorganism. one is solid medium for separation and another is liquid medium for application to concrete. Four species of microorganisms were finally separated for this research. Five types of concrete specimens were made for performance evaluation of concrete. one is normal concrete mixed with water and others are microorganism concrete mixed with each microbe. The concrete specimens were cured in water for three, seven, twenty eight days to measure values of mechanical strength of concrete and immersed in 10% salty water in order to evaluate the chloride penetration performance. A salt damage resistance test was performed to compare the microorganism-mixed concrete and the plain concrete. Three tests(compressive strength, flexural strength, salt damage resistance) were examined for performance evaluation of concrete. To evaluate the salt damage resistance, two reagents were alternately sprayed and the colors were checked using the indicators of the Testing Method for Chloride Ion Penetration of Concrete (KS F 2737). SEM and XRD analysis were performed in order to identify what minerals microorganisms precipitated are. The compressive strength and flexural strength of specimens that underwent 3, 7, 28 days water curing were examined. Both of compressive strength and flexural strength of JC-2 are higher than any other cases. The chloride penetration depth was measured according to KS F 2737. The specimens cured in 10% salt water for 14 weeks were fractured lengthwise. As a result of this test, the salt damage resistance of KNU401 was the highest among all the cases. This study is only a basic study, and further studies will be needed to improve the defects of concrete.
This paper is intended to find microorganisms that are good for concrete and to apply them to concrete. As a first step, selection of microorganism were performed several places, Kyungpook national university and Jeju island. Several species of microorganism from these places were separated from samples selected and cultured. In this study, two types of medium were used for raising microorganism. one is solid medium for separation and another is liquid medium for application to concrete. Four species of microorganisms were finally separated for this research. Five types of concrete specimens were made for performance evaluation of concrete. one is normal concrete mixed with water and others are microorganism concrete mixed with each microbe. The concrete specimens were cured in water for three, seven, twenty eight days to measure values of mechanical strength of concrete and immersed in 10% salty water in order to evaluate the chloride penetration performance. A salt damage resistance test was performed to compare the microorganism-mixed concrete and the plain concrete. Three tests(compressive strength, flexural strength, salt damage resistance) were examined for performance evaluation of concrete. To evaluate the salt damage resistance, two reagents were alternately sprayed and the colors were checked using the indicators of the Testing Method for Chloride Ion Penetration of Concrete (KS F 2737). SEM and XRD analysis were performed in order to identify what minerals microorganisms precipitated are. The compressive strength and flexural strength of specimens that underwent 3, 7, 28 days water curing were examined. Both of compressive strength and flexural strength of JC-2 are higher than any other cases. The chloride penetration depth was measured according to KS F 2737. The specimens cured in 10% salt water for 14 weeks were fractured lengthwise. As a result of this test, the salt damage resistance of KNU401 was the highest among all the cases. This study is only a basic study, and further studies will be needed to improve the defects of concrete.
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