Matthieu Vandamme

TL;DR: In this paper, statistical indentation analysis techniques are used to identify intrinsic and structural sources of anisotropy of hydrated nanoparticles: calcium-silicate-hydrate (C-S-H), apatite, and clay.

TL;DR: In situ creep behavior of calcium–silicate–hydrates (C–S–H), the nano-meter sized particles that form the fundamental building block of Portland cement concrete, is measured and it is demonstrated that the creep rate is likely due to the rearrangement of nanoscale particles around limit packing densities following the free-volume dynamics theory of granular physics.

TL;DR: In this paper, the root-mean-squared (RMS) roughness of the sample, taken over a square area with edge dimensions of 200 times the average indentation depth of the dominating phase of the material, should be less than five times.

TL;DR: In this paper, a low water/cement ratio (w/c=0.20) hydrated Portland cement paste was analyzed by grid-indentation coupled with ex situ scanning electron microscope-energy-dispersive X-ray spectra (SEM-EDS) analysis at each indentation point.

TL;DR: In this paper, the authors present a comprehensive nanoindentation investigation of cement pastes prepared at substoichiometric water-to-cement (w/c) mass ratios between 0.15 and 0.4 with and without heat treatment.