Effect of curing regime on polymerization of C-S-H in hardened cement pastes

Phase development of hydrated cement pastes with SCMs under delayed heating conditions below 100 °C

“…For all the samples (see Figure 7A and 7B), the TT induced the polymerization of C-(A)-S-H, illustrated here by a higher amount of the Q 3 and Q 4 species (structure similar to silica gel) and a lower amount of Q 1 and Q 2 species (representing C-(A)-S-H chains). Similarly to literature [88], in samples P1 and P2, the polymerization was higher for a soft TT (65 °C) than for a harsher TT (80 °C). The C-(A)-S-H polymerization was usually observed in literature when the carbonation process was involved leading to the decalcification of C-(A)-S-H [89,90].…”