Study of the Hydration Mechanism of Portland Cement with Raman Spectroscopy Applying CO₂ Laser Radiation

Figure 2

Raman spectra of paste irradiated with CO₂ laser at 1.6 W with w/c ratio 0.45. (a) Raman spectra from 30 s to 1 h of irradiation. (b) Raman spectra from 2 h to 8 h of irradiation. (c) Evolution of C-S-H from 30 s to 1 h. (d) Evolution of C-S-H and CH from 2 to 8 h.

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(b)

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