Clarification on the HTC permeability parameters in MARS

[madura]

The current implementation of the HTC model in MARS does not include the dependency of permeability on w/c (water to cement ratio) and s/c (silica fume to cement ratio), according to Equation 33 in the paper: Hygro-thermo-chemical modeling of high performance concrete. I: Theory, ​ G. Di Luzio and G. Cusatis​, Cement \& Concrete Composites 31 (2009) 301-308. Hence, ​the MARS permeability input must be $D_0$ and $D_1$ as opposed to ​ $\tilde{D}_0$ and $\tilde{D}_1$​.

Also the numerical values ​for $\tilde{D}_0$ and $\tilde{D}_1$ reported in Table 2 of Hygro-thermo-chemical modeling of high performance concrete. II: Numerical implementation, calibration, and validation, ​ G. Di Luzio and G. Cusatis​, Cement \& Concrete Composites 31 (2009) 309-324, are actually the values for $\tilde{D}_0/c$ and $\tilde{D}_1/c$, $c$= cement content, and the units are mm$^2$/h.

Finally, the original implementation of the HTC model (fortran code) required as input $D_0/c$ and $D_1/c$ in mm$^2$/h.

[rwendner]

Dear all

I would like to clarify:
Equations 33 was part of the MARS code for the last few months which caused some inconsistencies between old fortran calculations and new analyses.
This equation was taken out of the gitlab distributed MARS developer version very recently - please the latest gitlab pushes.

Best,
Roman