Temperature Control Measures for Mass Concrete Pouring of LNG Storage Tank Cap
The cap part of LNG storage tank is a typical mass concrete structure,and it is faced with the difficult problem of temperature and crack control during the construction process.Because concrete not only generates a lot of heat from hydration heat,but also has difficulty in heat transfer in the body,the large temperature difference between the surface and the interior causes temperature stress and forms large tem-perature cracks,which reduces the quality of concrete use.In this paper,based on the experience of the cap construction of Longkou Nanshan LNG Phase Ⅰ Project Receiving Station,the method is summarized from the aspects of concrete materials,construction technology and construc-tion sequence,and the temperature control measures suitable for mass concrete are proposed.Reduce the temperature difference between the inside and outside of concrete,so as to ensure the smooth completion of concrete pouring with a volume of 8 764 m3.
Mass concreteTemperature controlCrackPile cap structure
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