ELUTION INHIBITION METHOD FOR FLUORINE AND HEXAVALENT CHROMIUM, MANUFACTURING METHOD OF CIVIL ENGINEERING AND HARBOR MATERIAL, MANUFACTURING METHOD OF UNDERGROUND BURYING MATERIAL, CIVIL ENGINEERING AND HARBOR MATERIAL, AND UNDERGROUND BURYING MATERIAL

摘要

PROBLEM TO BE SOLVED: To surely inhibit fluorine or hexavalent chromium from being eluted out of a steel by-product even with a small amount of an elution inhibitor.SOLUTION: An elution inhibition method for fluorine or hexavalent chromium of this invention comprises the inhibition of elution of fluorine or hexavalent chromium out of a steel by-product 1 by mixing an elution inhibitor 2 containing calcium aluminate with an elution inhibition adjuvant 3 containing calcium with respect to the steel by-product 1 containing fluorine or hexavalent chromium. The elution inhibition adjuvant 3 preferably contains at least one or more of CaO, Ca(OH), or calcium silicate.SELECTED DRAWING: Figure 1