Abstract
With the purpose that the desulphurization and skimming slag tailings from Ansteel can be used as building materials, the slag tailings were ground to powders with specific surface area 560m2/kg , and then was blended in cement. Strength of slag tailings-blended cement, Physical-mechanical characteristic, frost-resistance and resistance to carbonizing of slag tailings-blended concrete were studied. The experiment results demonstrated that as the amount of tailings increasing, both of the compressive strength and the rupture strength of cement mortar with 3 and 28 curing age decrease gradually, also did the compressive strength of the concrete modules with 28 curing age. The reason why these strengths decreased was also given. The study showed that the optimum amount of slag tailings to be blended was between 10 wt.% to 20wt.%.
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