Table 2 Changes in Si polymerization in tobermorite due to carbonation in different pH environments
Tobermorite | Q4 | Q3 | Q2p | Q2b | Q1 | ||||
|---|---|---|---|---|---|---|---|---|---|
−110.6 ppm | −99.3 ppm | −95.53 ppm | −93.1 ppm | −90.4 ppm | −85.5 ppm | −84.2 ppm | −79.4 ppm | ||
Before carbonation | 0% | 0% | 16.0% | 3.0% | 6.5% | 24.4% | 40.4% | 9.8% | |
After carbonation | pH 9 | 56.2% | 24.5% | 3.8% | 0% | 3.5% | 4.6% | 7.4% | 0% |
pH 13 | 49.4% | 37.7% | 0% | 0% | 4.0% | 0% | 8.8% | 0% | |
