Patent ID: 9499439
Filing Date: 2016-11-22
CPC Classification: C04B

Claim Text:
1. A cured nanocomposite cementitious composition, comprising: cement; about 0.02% to about 0.1% multiwalled carbon nanotubes, by weight of the cement; and about 0.1 to 0.4% polycarboxylate based superplasticizer, by weight of the cement; wherein the cured nanocomposite cementitious material comprises calcium-silicate-hydrates; and further wherein the cured nanocomposite cementitious material has a Young's modulus that is at least 15% higher than that of the plain cured cement at the age of 28 days and further wherein the nanocomposite cementitious material exhibits a modified nanostructure so that the average values of stiffness and hardness of the calcium-silicate-hydrates, as determined by nanoindentation tests, are higher compared to the plain cured cement.