Control of early-age cracks in concrete of wind turbine tower foundation constructed by the continuous pouring method with two different heat generation mixes

  • Cong Vu Chi
  • Minh Le Van
  • Khoa Ho Ngoc
Keywords: Thermal stress, Mass concrete, Thermal cracking, Heat of cement hydration, Different heat generation mix, Wind turbine tower foundations, Early age crack, Temperature increase

Abstract

To avoid problems caused by thermal stress during the concrete curing process for building components built with Mass Concrete technology, it is necessary to choose appropriate mix and construction technology processes. Based on research results on cracking control, especially thermal cracking. Thermal cracking of mass concrete structures during the curing process, formed from the heat of cement hydration, has been a major problem encountered for many years. The problem of temperature difference between the center and the surface needs to be controlled. To control this temperature difference, the continuous pouring method with 2 different heat generation mixes was applied to research the concrete pouring of the wind turbine tower foundation in this article. The objective of the article is to analyze the thermal reaction of wind turbine tower foundation concrete constructed by the continuous pouring method with two different heat generation mixes, with the support of Midas civil software to controls cracking at early ages and temperature increases. The analyzes were performed on a wind turbine tower foundation model with dimensions of 12x12x3,5m. From the analysis results, the article draws conclusions and serves as a reference for researchers.

điểm /   đánh giá
Published
2024-04-28