Study on the Influence of Viscosity Reducer on the Performance of C80 Concrete
In this paper,the effects of viscosity reducing agent replacing fly ash on expansion,compressive strength,frost resistance and shrinkage of C80 concrete were studied.The results show that the expansion degree of concrete increases gradually with the increase of the pro-portion of fly ash replaced by viscosity reducer.With the increase of the proportion of fly ash replaced by viscosity reducer,the 7 d compressive strength of concrete gradually increased,and the 28 d compressive strength increased,but the change was relatively small.The freezing resist-ance and shrinkage resistance of C80 concrete are good,and the amount of viscosity reducing agent has little effect on the freezing resistance and shrinkage of concrete.
Viscosity reducerC80 concreteDegree of expansionCompressive strengthFrost resistanceShrink
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