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High-performance slag concrete is more likely to cause the emergence of crack than common concrete. In view of this problem, this paper introduces the forming mechanism of crack in concrete structure and puts forward the corresponding measures and methods. Generally speaking, the internal and external temperature difference at early stage and the basic difference of temperature at later stage are...
In the light of the temperature crack problem of the construction of RCCD during cold winter season, the authors have analyzed the dam cracking site and the cracking mechanism. Pointed out that the early autogenous volume deformation and temperature difference between inside and outside of the bedding concrete and the temperature difference of basis concrete are the main reasons resulted in the crack...
Evaporative cooling technology is an innovative technology developed in China, it is the first time the technology been used on the development of the 300 MW level turbine generator, the technology features simplified structure and uniform distribution of temperature. In this article, based on the analysis of the heat radiation of the high capacity generator, we calculate the 3D temperature field...
A three-dimensional heat transfer model was developed to simulate the temperature distribution of the cooling copper mould used in the thin slab continuous casting process. Temperature field of the copper plate of the funneled mould was calculated by finite element method (FEM). It was confirmed that the simulation results are in agree with the experiments and actual online production. Influences...
Thermal load is a main load just inferior to water pressure. Thermal creep stress is an important stress reference data of hydropower engineering design, and it is the important design criterion of preventing cracking. Crack will appear if thermal creep stress is beyond the allowable thermal creep stress of corresponding age of concrete, which will affect the safety of dam. Xiaowan concrete arch dam??s...
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