"That bridging of a microcrack by CNT does not look convincing....

"That bridging of a microcrack by CNT does not look convincing. The length of a single CNT is much less than 1 micron, while the width of the crack exceeds 1 micron."

So you were either outright lying when you posted this or you were sprouting nonsense as fact when you have no idea what you are talking about. Which is it?

You now post a 8 yr old excerpt from a paper that states CNT can be several µm long but still claim they are too short for a couple of µm gap. Can you prove the pyrolysis process has not been fine-tuned to lengthen the CNT based on the fact it was nearly 4 yrs later that EdenCrete was released and that research was most likely from when they were solving the dispersion problem?

You also totally disregard the fact that the shorter CNT would still be of great value to reduce such microcracking in the first place by increasing the bonding of the matrix on the nano level, the whole point really, and compound your miscomprehension of the premise of EdenCrete by comparing the macro level of the mm's distance between the highest ratio of steel fibres to the nano level that EdenCrete is working in. A couple of hundred steel fibres would totally miss that microcrack whereas the hundreds of thousands of CNT have it sorted.

IMO GLTS DYOR