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Study on the Crack Control Effect of Moist Curing Equipment in Side Wall of Building

습윤양생 장치를 이용한 아파트 측벽 균열제어에 관한 연구

  • Received : 2016.08.28
  • Accepted : 2017.02.15
  • Published : 2017.04.20

Abstract

In this study, moist curing equipment was used in the exist gang-form system. By achieving sufficient spray curing, the quality of the concrete was improved and the cracking occurred in building's side wall was decreased. The following results could be made as the conclusion. For the compressive strength, all zones showed the similar results. Comparing with the zone without using moist curing equipment, the zone used moist curing equipment showed higher rebound hardness results. For the cracking, the zone utilized moist curing equipment showed the cracking averaged as 6.6 m and the zone without using moist curing equipment showed the cracking averaged as 10.3m. The effectof reducing cracking by utilizing moist curing equipment is about 36 %. Using moist curing equipment is considered as a good solution to reduce the cracking in the structure. Considering all the factors analysed, using moist curing equipment improved the quality of the concrete and decreased the cracking. When this equipment was used in the construction site, it is expected that the construction periodcan be shrunk and the ratio of defect caused by drying shrinkage can be decreased. In this research conditions, The 0.3mm sized moist curing equipment provided the most desirable results on concrete quality and preventing cracking.

최근 국내 아파트의 외벽 거푸집공사의 경우 대부분 갱폼 시스템을 통해 철근콘크리트 구조체를 시공하고 있다. 이러한 갱폼 거푸집을 사용한 콘크리트의 경우는 거푸집 탈형 후 외부환경에 노출되고 특히, 건조한 봄, 가을과 일사량이 높은 서중시기의 벽량이 많은 아파트 측벽에 다량의 균열이 발생되어지고 있다. 이에, 본 연구에서는 신축 아파트 건설현장 중심으로 균열량이 많은 아파트 측벽부분의 갱폼시스템에 습윤양생 자동설비장치를 적용하여 초기 콘크리트 양생에 필요한 수분을 공급함으로써 콘크리트의 품질확보와 다량의 측벽균열 저감을 통한 습윤양생 자동장치의 효율성 및 활용성을 검토하고자 하였는데, 그 결과, 양생 효과 및 낙수량 고려 시 습윤양생 자동장치에 0.3mm 사이즈의 노즐을 사용하여 살수양생을 실시할 경우, 자원낭비 없이 콘크리트의 품질향상 및 균열저감에 효과적인 것으로 판단되었다.

Keywords

References

  1. Kim DS, Kim YS. A Study on the productivity analysis of new forming methods of reinforced concrete apartment. Journal of Architectural Institute of Korea. 2001 Mar;21(1):525-8.
  2. Ministry of Land. Concrete Standard Specifications. 5th ed. Seoul (Korea): Korea Concrete Institute; 2016. Chapter 2, Curing; p. 55-7.
  3. Yang SH, Jo JY, Jo JW, Lee JH, Kim YS. Development of an automated gangform climbing system for apartment housing construction-structural stability and tower crane lifting load analysis. Journal of the Korean construction of Archives and Records Management. 2012 Jul;13(4):48-59.
  4. Lee SG. Development of safety vertical form for tall building [master's thesis]. [Seoul (Korea)]: Korea university; 2009. 61 p.
  5. Park BK. Gang form work system, Journal of Korea concrete institute. 2002 Sep;14(5):15-20.