Title:
Effect of pH Reduction on Desorption of Bound Chlorides in Cement Pastes Containing Ground Granulated Blast Furnace Slag Exposed to De-Icing and Anti-Icing Salts
Author(s):
Teymouri
Publication:
Web Session
Volume:
ws_S23_Teymouri.pdf
Issue:
Appears on pages(s):
Keywords:
DOI:
Date:
4/2/2023
Abstract:
Concrete structure exposed to coastal environments suffers from severe chloride corrosion because seawater contains a high concentration of chloride ions. Another source of chloride is chloride-bearing de-icing and anti-icing salts solutions. Chloride ions can be physically absorbed and chemically combined with cement hydration products. Chloride binding is considered to have a beneficial influence on durability owing to the reduction of free chloride concentration in the pore solution, thus substantially reducing the chance of corrosion in reinforced concrete. The inclusion of slag enhances the durability of concrete in terms of carbonation, acid attack, and sulfate attack.