Additives to improve the mechanical properties of bitumen

CONTRIBUTORS: Laurent BOUTEILLER, Sandrine PENSEC

In collaboration with TotalEnergies, we have shown that it is possible to improve the mechanical properties (hardness and elastic modulus) of a bitumen at ambient temperature by introducing a supramolecular additive, which forms long crystalline fibres. At high temperatures, the fibres melt, making the bitumen easier to process.

The weak help the strong : low molar mass organogelators harden bitumen

B. Isare, L. Petit, E. Bugnet, R. Vincent, L. Lapalu, P. Sautet, L. Bouteiller Langmuir 2009, 25, 8400-8403.