Proceedings of the Korea Concrete Institute Conference (한국콘크리트학회:학술대회논문집)

Korea Concrete Institute (한국콘크리트학회)
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Construction and Evaluation of Thermal Crack Stability about Bottom Slab of the #219 LNG Underground Tank in Incheon

인천 LNG 지하탱크 #219 Bottom Slab시공 및 온도균열 안정성 평가

  • 손영준 (쌍용양회공업(주) 기술연구소 콘크리트연구실) ;
  • 하재담 (쌍용양회공업(주) 기술연구소 콘크리트연구실) ;
  • 엄태선 (쌍용양회공업(주) 기술연구소 콘크리트연구실) ;
  • 이종열 (쌍용양회공업(주) 기술연구소) ;
  • 박종식 (GS건설(주) 인천 LNG 생산기지 현장 품질시험실)
  • Published : 2006.11.04
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Abstract

The crack of concrete induced by the heat of hydration is a serious problem, particularly in massive concrete structures. In order to control the temperature crack of massive concrete, the selection of appropriate materials like low heat cement, mixture materials, etc. is essential. In tills study, mix proportion using low heat portland cement and lime stone powder was designed and the best mix proportion, B-1, was selected. When bottom slab of the #219 LNG tank in Incheon was constructed, concrete temperature was measured. And thermal stress was analyzed about bottom slab of the LNG tank. As results of the thermal analysis, crack index was 1.60 in bottom slab and satisfied with construction specifications(over 1.0).

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