Abstract
For composites with 50%, 60% and 70% concrete content of fly ash and grinding blast furnace slag, 17 composite ratios were designed. The effect of composite ratio of mineral admixture on the migration coefficient of chloride ion of C45 bridge pier concrete was studied by test method for rapid chloride ions migration coefficient. The cost analysis of the concrete which meets permeability of resistance to chloride ions was carried out. The results show that: With the increase of the proportion of fly ash and grinding blast furnace slag, the 28d chloride ions migration coefficient of concrete with different admixtures is generally reduced.
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