The effect of fly ash with different chemical composition on inhibiting alkali aggregate reaction was studied by rapid mortar bar method.The test shows that the inhibition effectiveness of F type fly ash on alkali aggregate reaction is obviously better than that of C type fly ash,and the higher the content of fly ash is,the better the inhibition effect is.Statistical analysis shows that there is a good correlation between the chemical composition of fly ash and its inhibition effectiveness on alkali aggregate reaction.The inhibition effectiveness has a linear positive correlation with the total mass fraction of SiO2+Al2O3+Fe2O3,a linear negative correlation with CaO content,and no direct correlation with alkali content.
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