# Engineering Mechanics

Proceedings Vol. 32 (2026)

ENGINEERING MECHANICS 2026

Copyright © 2026 Institute of Thermomechanics of the Czech Academy of Sciences, Prague

 

Špaková A., Němeček J., Němeček J.
pages 133 - 136, full text

This study investigates the correlation between micromechanical properties and chemical compo- sition in a blended cement paste containing fly ash and limestone. Micromechanical characterization was performed using grid nanoindentation with a spatial resolution of 2.5 µm to acquire the local Young’s modu- lus across the different cement paste phases. Additionally, Energy Dispersive X-ray Spectroscopy (EDS) line scans provided pointwise elemental composition, enabling the calculation of (Ca–S)/Si and Al/Si ratios for each measurement location. By combining the mechanical and chemical datasets, the spatial distribution of element content and corresponding stiffness was visualized, allowing segmentation of the paste into distinct phases such as low- and high-density C–S–H, Portlandite, and fly ash regions.

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All papers were reviewed by members of the scientific committee.