Study of C-S-H growth on C3S surface during its early hydration

Modeling cement hydration by connecting a nucleation and growth mechanism with a diffusion mechanism. Part I: C3S hydration in dilute suspensions

“…For example, samples 2 and 3 had very similar particle size distributions [22] , but their degree of hydration curves were quite different ( Figure 3 ). The authors [22] also Determined from original particle size distribution data by original author [21] . b Determined from reproduced data by re-digitizing the particle size distribution graph in [21] .…”

Morpho-topological investigation of the mechanisms and kinetic regimes of alite dissolution

“…Despite those efforts and the large collection of new data generated, no conclusive assessment could emerge to discriminate the divergent points of view, debated now for several decades in the cement chemistry community, on what happens within the first 10-15 minutes upon mixing of cement and water and what causes the induction/dormant period. Whether a protective membrane [5,6] forms or not, whether cement surface undergoes a superficial protonation as originally proposed by Barret [7] or a superficial hydration as more recently proposed by Gartner [8] or whether precipitation/growth of hydrates governs completely the overall hydration kinetics [2,9,10] remains unanswered with certitude, although all various hypotheses are generally supported with extensive series of data or thermodynamic considerations.…”

The role of Gypsum in Portlandite Stone Structure Formation

“…The role of portlandite during C 3 S hardening is described in [1,2]. The authors assumed that Ca(OH) 2 layers are incorporated between the packs of tobermorite phases and thus the solid solution is formed.…”

“…1 The hydration of calcium oxide has been examined in the presence of SO 4 2-. The conditions, under which portlandite stone with the best physico-mechanical properties was formed, have been determined.…”