International Conference on Calcium Aluminates 2026

Session

Hydration 2

9 Jun 2026, 13:30

SwissTech Convention Center EPFL

Conveners

Hydration 2

• Barbara Lothenbach
• Elsa Qoku

24. Quantification of the metastable calcium aluminate phases C2AHx using an extended PONKS method

Dr Julian Goergens

09/06/2026, 13:30

Hydration

Oral Presentation

Quantification of the metastable hydrate phases CAH10 and C2AHx is essential in understanding and evaluating the conversion progress of CAC pastes for scientific and industrial research. Mainly XRD or TGA are used for phase quantification, whereas XRD proved to be more precise. While structural data exist for CAH10, they do not yet exist for C2AHx, as the proportion of interlayer H2O in the...

33. Influence of curing temperature on the phase composition and microstructure of calcium aluminate cement bond castables subjected to hydrothermal conditions

Dr Andreas Koehler (Almatis GmbH)

09/06/2026, 13:50

Hydration

Oral Presentation

Calcium aluminate cement is widely used as a binder in refractory castables because it enables shaping complex geometries and allows the material to withstand extreme temperatures. Their typical manufacturing process consists of mixing, curing, demolding, drying and firing. In modern dense and highly dispersed castables with very low permeability, water remains in the castable body during the...

48. Reducing the risk of explosive steam spalling of calcium aluminate bonded refractory concretes through a modified hydration path

Jean Michel Auvray (IMERYS)

09/06/2026, 14:10

Hydration

Oral Presentation

High performance (HP) refractory concrete rely mainly on sophisticated, highly densified matrix systems with a high charge of pore-filling alumina and silica micro-powders, deflocculated with efficient polymer admixtures, and bonded with 70% Al2O3 containing calcium aluminate. However, these HP concretes experience a challenge concerning the safe and rapid removal of free pore and hydrate...