As an environmentally friendly concrete admixture material,fly ash has received extensive attention and application,and its addition to concrete can not only effectively reduce carbon dioxide emissions in the atmosphere and the generation of solid waste,but also improve the engineering performance of concrete.In order to explore the effects of different fly ash dosages on the frost resistance and frost resistance of concrete,the control variable method was used to carry out experimental studies with fly ash content of 5％,10％and 15％,and the results showed that the mass loss rate of concrete mixed with fly ash was significantly lower than that of concrete without fly ash under different freeze-thaw cycles,and the relative dynamic elastic modulus of fly ash concrete with different amounts of fly ash decreased with the increase of the number of freeze-thaw cycles.However,the decrease of the relative dynamic elastic modulus of concrete without fly ash is significantly greater than that of fly ash,the water seepage height of concrete decreases significantly after fly ash is mixed,and the impermeability of concrete is significantly improved after fly ash is added,and the impermeability of concrete is continuously improved with the increase of fly ash content.
维普
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