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ACS Symposium SeriesGels and Other Soft Amorphous Solids Heterogeneity in Cement Hydrates

TitleACS Symposium SeriesGels and Other Soft Amorphous Solids Heterogeneity in Cement Hydrates
Publication TypeBook
Year of Publication2018
AuthorsIoannidou K
Series EditorHorkay F, Douglas JF, Del Gado E
Corporate AuthorsAmerican Chemical Society
Volume1296
Number of Pages357-371
PublisherAmerican Chemical Society
CityWashington, DC
ISBN Number0-8412-3316-0
ISBN0097-6156
Abstract

Cement hydrates named C-S-H are the main products of the reaction of cement with water. The C-S-H phase is the most important phase of cement paste as it glues all other phases together in a solid rock-like material. C-S-H gels form and densify via out-of-equilibrium precipitation and aggregation of nano-grains during cement hydration. In this chapter, the link between the making and densification of C-S-H gels and amorphous solids is discussed by coarse-grained models based on the evolution of interaction potentials and an out-of-equilibrium simulation approach for particle precipitation. In particular, we characterize and correlate mesoscale structural and mechanical heterogeneities resulting into residual local eigenstresses. This underlying microscopic picture explains recent macroscopic measurements of the volume change of hydrating cement in fully saturated conditions.

URLhttp://pubs.acs.org/series/symposiumhttp://pubs.acs.org/doi/book/10.1021/bk-2018-1296
DOI10.1021/symposium10.1021/bk-2018-129610.1021/bk-2018-1296.ch018
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