Determining hydration mechanisms for initial fall and main hydration peak in tricalcium silicate hydration using a two-scale hydration simulation model
Source abstract
Abstract
This study aimed to determine the hydration mechanisms of the initial fall and main hydration peak in tricalcium silicate (C 3 S) hydration using a two-scale hydration simulation model. The model could consider the coalescence of etch pits, the dependence of the interfacial dissolution rate on solution undersaturation, and the boundary nucleation and growth of calcium silicate hydrate (C S H). The results indicated that (1) the dissolution theory could reproduce the initial fall of the hydration rate in C 3S hydration; (2) when only the dissolution theory was considered, a discrepancy in Si concentration at the very early age of hydration was found between the results obtained from simulation and experiment; and (3) the main hydration peak could be ascribed to the combined effect of the dissolution of C 3S with the coalescence of etch pits, the nucleation and growth of C S H, and the shrinkage of particles.
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Research context
OpenAlex topics: Concrete and Cement Materials Research · CO2 Sequestration and Geologic Interactions · Magnesium Oxide Properties and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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