Evolution Law of Frost Resistance Index of Hydraulic Concrete Under Different Conditions
The evolution law of frost resistance of hydraulic concrete is a prerequisite to determine the curing time of hydraulic concrete in cold area,which is helpful to prolong the service life of hydraulic concrete in cold area.Based on this,the paper studies the evolution of frost resist-ance indexes such as mass loss rate and relative dynamic modulus of hydraulic concrete under different water-cement ratio and different lime-stone content and different freeze-thaw cycles.The results show that the mass loss coefficient of hydraulic concrete is positively correlated with the number of freeze-thaw cycles,and the mass damage decay rate begins to increase with the increase of water-cement ratio and limestone powder content.The relative dynamic elastic modulus of hydraulic concrete is negatively correlated with the number of freeze-thaw cycles.The higher the water-cement ratio,the more limestone powder content,and the faster the decay rate of the relative dynamic elastic modulus.
Hydraulic engineeringConcreteFreeze-thaw cycleMass loss coefficientRelative dynamic elastic modulus
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