Abstract
Carbonation of concrete for hydraulic structure containing mineral admixtures is studied. It is observed that the fly ash is not benefit to the carbonation resistance, and the different content of fly ash in concrete may play a different role without activator. However, concrete for hydraulic structure using binary admixture of fly ash and slag will make up the defects and when the fly ash to slag ratio is 1:1, the depth of carbonation decreases comparing to concrete using fly ash.
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