High resolution non-destructive computed tomography validates new models for a better understanding of cement under harsh conditions.

Knowledge of the spatial distribution of mineral phases in hardened cements can aid modelling of weathering and durability in harsh environments. The spatial distribution of mineral phases in epoxy resin impregnated portland cement was required without sectioning the sample. A 3D electron density map was derived by non-destructive ptychographic x-ray computed tomography. Six different material phases and their chemical compositions were identified with high spatial resolution.

References

Density mapping of hardened cement paste using ptychographic; x-ray computed tomography
Trtik P, Diaz A, Guizar-Sicairos M, Menzel A, Bunk O
Cement and Concrete Composites. 2013;36:71.
https://doi.org/10.1016/j.cemconcomp.2012.06.001