The feasibility of the application of low-heat cement concrete in ultra-high arch dam is explored by analyzing material characteristics and temperature stress through practical engineering cases.The test results indicate that the two types of concrete examined in the study possess distinct advantages and disadvantages.Despite exhibiting low strength and limited crack resistance during the early stages,it can effectively reduce the adiabatic heating,and reduce the stress state of the building structure through the slow heating and the increase of concrete age.Through finite element analysis,it can be observed that under identical conditions,the maximum heat value of low-heat cement concrete is significantly lower than that of medium-heat cement concrete by 2～3℃.Additionally,the former exhibits a higher safety factor,which remains above 2.0 during the test.Therefore,the low-heat cement concrete can be used in the construction of ultra-high arch dam due to its exceptional resistance to cracking.
ultra-high arch damlow-heat cementtemperature control and crack preventionelastic modulussafety factorfinite element analysis
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