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The Physical Properties of Port Type Crack Injection Method Using Latex Elastic Storage Tube

라텍스 탄성 저장관을 활용한 포트식 균열주입 공법의 물리적 특성에 관한 연구

  • Received : 2017.10.27
  • Accepted : 2018.02.27
  • Published : 2018.03.01

Abstract

In this study, to solve the problems of the conventional crack repair and injection method, high elasticity latex was used as the material of the storage tube to withstand the high pressure in the center part differently from the general port. When the repair solution was injected into the crack part, The TPS method was developed so that the air existing in the TPS can be discharged. In addition, a new infusion port in which a valve blocking the backflow of the remediation solution was installed at the injection port was developed and the physical characteristics of the port were analyzed. As a result of the evaluation, it was found that the filling rate of the remedial solution was improved compared to the existing ordinary injector method, and the cracks were completely filled in the test conditions. Compressive strength and tensile strength after repair showed about 20% decrease after repair in case of using ordinary injector method, while TPS method showed about 2~7% increase after repair. The results of this study showed that the injection port method using the elastic storage tube increased the injection performance and the quality after repair compared to the conventional injector method. The result of this study is expected to be utilized as the basic data for application and commercialization of the result to the practical structure.

본 연구에서는 기존의 균열보수 주입공법의 문제점을 해결하기 위하여 일반포트와는 다르게 중앙부에 높은 압력을 견딜 수 있도록 저장관의 재질은 고탄성 라텍스를 사용하였으며, 균열부위에 보수용액을 주입시 콘크리트 균열 내부에 존재하고 있는 공기가 배출될 수 있도록 TPS 공법을 개발 하였다. 또한 보수용액의 역류를 차단하는 밸브를 주입구에 설치한 새로운 주입식 포트를 개발하고 이에 대한 물리적 특성을 분석하였다. 분석 결과, 기존 주사기 공법에 비해 보수용액 주입속도가 향상되고, 시험조건에서 균열부위가 완전히 충전되는 것을 알 수 있었다. 보수 후의 품질은 압축강도 및 인장강도의 경우 주사기 공법 적용시에는 보수 후 약 20% 정도 저하하는 것으로 나타났고, TPS 공법 은 보수 후 강도가 오히려 약 2~7% 증가하는 경향으로 나타났다. 본 연구 결과를 통하여 탄성저장관을 사용한 주입식 포트 공법은 기존의 주사기 공법과 비교하여 주입성능 및 보수 후 품질이 증가하는 것을 알 수 있었고, 이를 활용하여 실구조물 적용 및 상용화를 위한 기반 자료로서 활용하고자 한다.

Keywords

References

  1. Byun, K. J., Song, H. W., Choi, W., and Woo, S. M. (2000), Crack Evaluation Technique and Crack Repair of Concrete Structures, Journal of the Korean Concrete Institute, 12(6), 97-108.
  2. Kang, J. G. (2016), Experimental and Analytical Study for Repairing and Strengthening of Initially Cracked Reinforced Concrete Members, Dong-A University Master Thesis.
  3. Kim, C. M., Park, S. E., Ji, H. W., Woo, Y. K., and Jung, H. S. (2014), Experimental Study on Performance Evaluation of Crack Repair Materials, Journal of the Korean Society For Railway, 2014(10), 494-498.
  4. Kim, S. M. (2014), A Experimental Study Performance Evaluation of Repair Material of Water-Leakage Cracks, Tongmyong University Master Thesis.
  5. Lee, D. K., Bae, K. S., Kwak, S. J., and Baek, J. M. (2006), Injection System by Inorganic Material for Crack Repair of Concrete Stuctures, Journal of the Korean Institute for Structural Maintenance and Inspection, 10(2), 165-170.
  6. Lee, D. K., Bae, K. S., Kwak, S. J., and Baek, J. M. (2006), Injection System by Inorganic Material for Crack Repair of Concrete Stuctures, Journal of the Korean Institute for Structural Maintenance and Inspection, 10(2), 165-170.
  7. Lee, D. S. (2010), A Study on the Improved Concrete Crack Repair Method, Konyang University Master Thesis.
  8. Lee, J. Y., An, T. H., and Won, C. H. (2015), Concrete Crack Survey, Repair Reinforcement Guideline 2013, 2015(7), 13-24.
  9. Lee, W. S. (2010), Performance Evaluation of Improved Injector Method for Crack Repair of Concrete Structures, Chungbuk University Master Thesis.
  10. Oh, S. W., Youn, L. R., and Cho, H. D. (2008), The Effects of Reinforcing in Concrete Crack by AIG Method, Journal of the Korean Society of Civil Engineers, 23(4), 79-84.