|Top right: Cement microstructure. SEM image of cement paste with
portlandite precipitates within calcium-silicate-hydrated C-S-H gel.
Using atomistic simulations, this work indicates that cement nanotubes
can exist. The chemically compatible nanotubes are constructed from the
two main minerals in ordinary Portland cement pastes, namely a calcium
silicate hydrate called tobermorite (bottom left) and calcium hydroxide
(bottom right). (Images: Dr. Ayuela, Donostia Internacional Physics
Carbon fibers are difficult to mix into portland cement concrete, making them an unlikely candidate for nano-reinforced concrete. New scientific work
suggests an alternative may be possible, nanotubes made from portland cement
This is more evidence that material sciences are advancing at an amazing pace and will have unpredictable effects on construction.
Oh brave new world.