Patent ID: 6610138
Filing Date: 2003-08-26
Classification: C04B,C23F,E04C

Abstract:
A method of resisting corrosion of metals in concrete comprising,introducing into fresh concrete having metal elements at least one compound capable of sequestering chloride ions selected from the group consisting of 3Me(II)O.R2O3.Me(II)(anion)2.nH2O where n=0 to 24 and 3Me(II)O.R2O3.Me(II)(anion)â€”nH2O where n=0 to 18, wherein Me(II) is one or more cations selected from the group consisting of Ca, Ba, Sr, Mn and Zn; R2 is Al2, Fe2 or Cr2; anion is NO2, NO3, CO3, BO4, or OH, but when R2 is Al2, then Me(II) is not Ca; and allowing said concrete to set.