CHLORIDE ADSORPTION AND DIFFUSIVITY OF BLAST FURNANCE SLAG CEMENT USING CALCIUM NITRITE

Abstract

This study investigated whether the chloride adsorption performance and diffusion performance could be obtained by mixing calcium nitrite with blast furnace slag cement. As a result, we found that the chloride adsorption power and diffusion performance of the hardened blast furnace cement with calcium nitrite increased, and the reaction degree of the blast furnace slag increased as calcium nitrite was mixed. It is considered that these results are related to the increase in calcium silicate hydrate （C-S-H） and nitrite-type monosulfate （NO₂-AFm） due to the addition of calcium nitrite.