관거 및 지하구조물 균열 보수에 사용되는 아크릴 누수 보수재의 적용성에 대한 연구
A Study on the Applicability of Acrylic Water Leak Repair Materials used to Repair Cracks in Conduits and Underground Structures
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노후된 관거 및 지하구조물의 균열 보수에 아스팔트계 주입재, 우레탄계 주입재, 시멘트계 주입재, 아크릴계 주입재등 다양한 주입재가 사용되고 있다. 친환경적이고 습윤상태에서 경화가 잘되고 온도변화에 안정적인 물성을 갖는 아크릴계 누수 보수재에 대하여 연구하였다. 개량된 아크릴 누수 보수재와 기존 아크릴레이트 주입재의 성능 비교를 위하여 KS 규격의 실험방법에 준용하여 수중침지 길이변화율 시험, 수중 유실 저항성 시험, 내화학 성능시험을 실시하였다. 비교 실험해 본 결과 개량된 아크릴 누수 보수재는 기존 아크릴레이트 주입재보다 습윤상태, 온도변화, 화학적반응에 따른 수축변화가 없었고 수중 저항성 실험에서 유실되지 않았다. 또한, 개량된 아크릴 누수 보수재의 환경적영향성을 알아보기 위해 어류급성독성 실험과 급성경구독성 실험을 진행하여 관찰해 본 결과 실험체의 사망률이 없었고 특별한 유의점이 발견되지 않았다. 본 연구의 실험결과 개량된 아크릴 누수 보수재가 성능적으로 우수하고 환경적으로 안전하고 인체에 무해하다고 판단되었다. 본 연구의 다양한 실험결과 기존의 아크릴레이트 보수재보다 개량된 아크릴 누수 보수재가 관거 및 지하구조물 균열부위의 보수재로 사용되기 적합하다고 사료된다. 본 연구는 아크릴 누수 보수재에 대한 적용성 평가에 대한 연구로향후 기술 개발에 활용자료로 제안하고자 한다.
Abstract
Various injection materials, such as asphalt-based injection materials, urethane-based injection materials, cement- based injection materials, and acrylic-based injection materials, are used for the repair of aged conduits and underground structures with cracks. In this study, research was conducted on an environmentally friendly acrylic- based leak repair material that exhibits good curing properties even in humid conditions and stability in temperature fluctuations. To compare the performance of the improved acrylic leak repair material with the existing acrylate injection material, experiments were conducted using KS standard methods, including underwater length change rate tests, underwater leakage resistance tests, and chemical performance tests. The comparative experiments revealed that the improved acrylic leak repair material showed no changes in shrinkage due to humidity, temperature variations, or chemical reactions compared to the existing acrylate injection material. In the underwater resistance test, the improved acrylic leak repair material did not show any leakage. Additionally, to assess the environmental impact of the improved acrylic leak repair material, acute fish toxicity tests and acute oral toxicity tests were conducted, and the results showed no mortality and no specific concerns with the test specimens. The experimental results led to the conclusion that the improved acrylic leak repair material is considered to be superior in performance, environmentally safe, and harmless to the human body. Based on various experimental results, it is inferred that the improved acrylic leak repair material is suitable for use as a repair material for cracks in manholes and underground structures compared to the existing acrylate repair material. This study aims to propose valuable data for future technological development by evaluating the applicability of acrylic leak repair materials.
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