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Influence of Solid Dissolved Al3+ Ions in Adsorption Alkali Ability of C-S-H

The influence of Al3+ ions that had been solid dissolved in C-S-H on the amount of Na+ ions adsorbed on C-S-H surface was studied. The experimental results show that the solid dissolution of Al3+ ions in C-S-H structure makes the electronegative C-S-H surface increase electronegative amounts, that is the reason why the adsorption ability of C-S-H for Na+ ions increase.