摘要 |
PCT No. PCT/IT89/00019 Sec. 371 Date Jan. 4, 1991 Sec. 102(e) Date Jan. 4, 1991 PCT Filed Mar. 16, 1989 PCT Pub. No. WO90/00635 PCT Pub. Date Jan. 25, 1990.Chromite by-products having a composition which includes FeCr2O4 as well as iron, aluminum, magnesium, sodium, calcium and silicon oxides are directly mixed with cement mortar and with the aggregates on use, or added to the water, producing the effect of corrosion inhibition of the steel reinforcements. |