From Molten Calcium Aluminates through Phase Transitions to Cement Phases.

ABSTRACT: Crystalline calcium aluminates are a critical setting agent in cement. To date, few have explored the microscopic and dynamic mechanism of the transitions from molten aluminate liquids, through the supercooled state to glassy and crystalline phases, during cement clinker production. Herein, the first in situ measurements of viscosity and density are reported across all the principal molten phases, relevant to their eventual crystalline structures. Bulk atomistic computer simulations confirm that thermophysical properties scale with the evolution of network substructures interpenetrating melts on the nanoscale. It is demonstrated that the glass transition temperature (T _g) follows the eutectic profile of the liquidus temperature (T _m), coinciding with the

SUBMITTER: Liu H 

PROVIDER: S-EPMC6974954 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature