In situ observation of tricalcium aluminate dissolution in water

In situ observation of tricalcium aluminate dissolution in water

Ye, Shaoxiong (Southeast University, China)
Feng, Pan (Southeast University, China - State Key laboratory of High Performance Civil Engineering Materials, China)
Liu, Yao (Southeast University, China)
Liu, Jiaping (Southeast University, China - State Key laboratory of High Performance Civil Engineering Materials, China)

2021-04-29

The nanoscale dissolution flux of tricalcium aluminate (C3A) in flowing water is characterized in situ by Digital Holographic Microscopy (DHM). The pure dissolution of C3A in flowing water with a flow rate of 34 ml·min-1 before the precipitation of hydrated phases only lasted about one quarter of a second, and the pure dissolution rate mostly falls in the range of 500 ~ 1500 μmol·m-2·s-1. Subsequently, foil shape hydration product formed and rapidly covered the surface of C3A, leading to the dramatic decrease of the overall dissolution rate to 55 ± 10 μmol·m-2·s-1.

DHM
C3A
rapid dissolution

http://resolver.tudelft.nl/uuid:3483a725-f01f-4dcb-8bed-633ea5b23aa9

Conference proceedings

conference paper

(c) 2021 the authors