Abstract
The authors studied Cl binding capacity of mortar specimens with having various Portland cement, blast furnace slag, and pozzolans. In the experiment, a pore liquid extraction method, chloride titration test, and quantitative analysis of Friedel’s salt based on XRD method, and mercury intrusion porosimetry test were conducted in order to measure chloride ion, adsorbed Cl on pore wall, and chemically fixed Cl (Friedel’s salt), separately. It is clearly shown that the amount of Friedel’s salt strongly depends on types of binder used, whereas that of adsorbed Cl is controlled by achieved micropore structure and characteristics of hydrated products.
