Research Article

CaCl2-Accelerated Hydration of Tricalcium Silicate: A STXM Study Combined with 29Si MAS NMR

Table 2

Peak positions and the energy separation between peak positions of Si K-edge NEXAFS spectra of selected areas in 7-day-hydrated C3S with CaCl2 (C and Op denote the core area and outer product of C3S, resp., in Bae et al. [22]).

Peak (eV)Peak Δ

Blue line1846.61863.216.6
Red line1846.91863.016.1
Core1846.51861.915.4
Top1846.51861.915.4
Bottom1846.51862.015.5
Anhydrous C3S1847.71858.911.2
Syn-CSH0.661846.91863.416.5
Syn-CSH0.951846.71863.116.4
Syn-CSH1.441846.41861.515.1
Op1847.41862.715.4
C1847.71559.4, 1861.511.4, 13.8

Data from Bae et al. [22].