Challenges and Benefits of Utilizing Carbon Nanofilaments in Cementitious Materials

Figure 2

Clumps of silica fume particles (lighter colored particles) seen in the fractured surface of a hardened cement paste beam. It is postulated that these clumps generate weak zones that can partially offset the effect of CNFs on mechanical properties. The beam has a cross-section side length of 15.9 mm (0.625 inch).